Vanara/PInvoke/Shell32/ShellApi.cs

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using Vanara.InteropServices;
using static Vanara.PInvoke.ComCtl32;
using static Vanara.PInvoke.Kernel32;
using static Vanara.PInvoke.PropSys;
using static Vanara.PInvoke.User32_Gdi;

namespace Vanara.PInvoke
{
	/// <summary>Interfaces, functions, enumerated types and structures for Shell32.dll.</summary>
	public static partial class Shell32
	{
		/// <summary>Values used in APPBARDATA.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "cf86fe15-4beb-49b7-b73e-2ad61cedc3f8")]
		public enum ABE
		{
			/// <summary>Left edge.</summary>
			ABE_LEFT = 0,

			/// <summary>Top edge.</summary>
			ABE_TOP = 1,

			/// <summary>Right edge.</summary>
			ABE_RIGHT = 2,

			/// <summary>Bottom edge.</summary>
			ABE_BOTTOM = 3,
		}

		/// <summary>Values used by SHAppBarMessage.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "173d6eff-b33b-4d7d-bedd-5ebfb1e45954")]
		public enum ABM
		{
			/// <summary>
			/// Registers a new appbar and specifies the message identifier that the system should use to send notification messages to the appbar.
			/// </summary>
			ABM_NEW = 0x00000000,

			/// <summary>Unregisters an appbar, removing the bar from the system's internal list.</summary>
			ABM_REMOVE = 0x00000001,

			/// <summary>Requests a size and screen position for an appbar.</summary>
			ABM_QUERYPOS = 0x00000002,

			/// <summary>Sets the size and screen position of an appbar.</summary>
			ABM_SETPOS = 0x00000003,

			/// <summary>Retrieves the autohide and always-on-top states of the Windows taskbar.</summary>
			ABM_GETSTATE = 0x00000004,

			/// <summary>
			/// Retrieves the bounding rectangle of the Windows taskbar. Note that this applies only to the system taskbar. Other objects,
			/// particularly toolbars supplied with third-party software, also can be present. As a result, some of the screen area not
			/// covered by the Windows taskbar might not be visible to the user. To retrieve the area of the screen not covered by both the
			/// taskbar and other app bars<72>the working area available to your application<6F>, use the GetMonitorInfo function.
			/// </summary>
			ABM_GETTASKBARPOS = 0x00000005,

			/// <summary>
			/// Notifies the system to activate or deactivate an appbar. The lParam member of the APPBARDATA pointed to by pData is set to
			/// TRUE to activate or FALSE to deactivate.
			/// </summary>
			ABM_ACTIVATE = 0x00000006,

			/// <summary>Retrieves the handle to the autohide appbar associated with a particular edge of the screen.</summary>
			ABM_GETAUTOHIDEBAR = 0x00000007,

			/// <summary>Registers or unregisters an autohide appbar for an edge of the screen.</summary>
			ABM_SETAUTOHIDEBAR = 0x00000008,

			/// <summary>Notifies the system when an appbar's position has changed.</summary>
			ABM_WINDOWPOSCHANGED = 0x00000009,

			/// <summary>Windows XP and later: Sets the state of the appbar's autohide and always-on-top attributes.</summary>
			ABM_SETSTATE = 0x0000000A,

			/// <summary>
			/// Windows XP and later: Retrieves the handle to the autohide appbar associated with a particular edge of a particular monitor.
			/// </summary>
			ABM_GETAUTOHIDEBAREX = 0x0000000B,

			/// <summary>Windows XP and later: Registers or unregisters an autohide appbar for an edge of a particular monitor.</summary>
			ABM_SETAUTOHIDEBAREX = 0x0000000C,
		}

		/// <summary>Where to obtain association data and the form the data is stored in.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "1d1a963f-7ebb-4ba6-9a97-795c8ef11ae4")]
		public enum ASSOCCLASS
		{
			/// <summary>The hkClass member names a key found as <b>HKEY_CLASSES_ROOT</b>\ <b>SystemFileAssociations</b>\ <i>hkClass</i>.</summary>
			ASSOCCLASS_SHELL_KEY = 0,

			/// <summary>The hkClass member provides the full registry path of a ProgID.</summary>
			ASSOCCLASS_PROGID_KEY,

			/// <summary>The pszClass member names a ProgID found as <b>HKEY_CLASSES_ROOT</b>\ <i>pszClass</i>.</summary>
			ASSOCCLASS_PROGID_STR,

			/// <summary>The hkClass member provides the full registry path of a CLSID.</summary>
			ASSOCCLASS_CLSID_KEY,

			/// <summary>The hkClass member names a CLSID found as <b>HKEY_CLASSES_ROOT</b>\ <b>CLSID</b>\ <i>pszClass</i>.</summary>
			ASSOCCLASS_CLSID_STR,

			/// <summary>The hkClass member provides the full registry path of an application identifier (APPID).</summary>
			ASSOCCLASS_APP_KEY,

			/// <summary>
			/// The APPID storing the application information is found at <b>HKEY_CLASSES_ROOT</b>\ <b>Applications</b>\ <i>FileName</i>
			/// where <i>FileName</i> is obtained by sending <b>pszClass</b> to PathFindFileName.
			/// </summary>
			ASSOCCLASS_APP_STR,

			/// <summary>The pszClass member names a key found as <b>HKEY_CLASSES_ROOT</b>\ <b>SystemFileAssociations</b>\ <i>pszClass</i>.</summary>
			ASSOCCLASS_SYSTEM_STR,

			/// <summary>
			/// Use the association information for folders stored under <b>HKEY_CLASSES_ROOT</b>\ <b>Folder</b>. When this flag is set,
			/// <b>hkClass</b> and <b>pszClass</b> are ignored.
			/// </summary>
			ASSOCCLASS_FOLDER,

			/// <summary>
			/// Use the association information stored under the <b>HKEY_CLASSES_ROOT</b>\ <b>*</b> subkey. When this flag is set,
			/// <b>hkClass</b> and <b>pszClass</b> are ignored.
			/// </summary>
			ASSOCCLASS_STAR,

			/// <summary>
			/// Introduced in Windows 8. Do not use the user defaults to apply the mapping of the class specified by the pszClass member.
			/// </summary>
			ASSOCCLASS_FIXED_PROGID_STR,

			/// <summary>
			/// Introduced in Windows 8. Use the user defaults to apply the mapping of the class specified by the pszClass member; the class
			/// is a protocol.
			/// </summary>
			ASSOCCLASS_PROTOCOL_STR,
		}

		/// <summary>Flags for NOTIFYICONDATA.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "fdcc42c1-b3e5-4b04-8d79-7b6c29699d53")]
		[Flags]
		public enum NIF
		{
			/// <summary>The uCallbackMessage member is valid.</summary>
			NIF_MESSAGE = 0x00000001,

			/// <summary>The hIcon member is valid.</summary>
			NIF_ICON = 0x00000002,

			/// <summary>The szTip member is valid.</summary>
			NIF_TIP = 0x00000004,

			/// <summary>The dwState and dwStateMask members are valid.</summary>
			NIF_STATE = 0x00000008,

			/// <summary>
			/// Display a balloon notification. The szInfo, szInfoTitle, dwInfoFlags, and uTimeout members are valid. Note that uTimeout is
			/// valid only in Windows 2000 and Windows XP.
			/// <list type="bullet">
			/// <item>
			/// <description>To display the balloon notification, specify NIF_INFO and provide text in szInfo.</description>
			/// </item>
			/// <item>
			/// <description>To remove a balloon notification, specify NIF_INFO and provide an empty string through szInfo.</description>
			/// </item>
			/// <item>
			/// <description>To add a notification area icon without displaying a notification, do not set the NIF_INFO flag.</description>
			/// </item>
			/// </list>
			/// </summary>
			NIF_INFO = 0x00000010,

			/// <summary>Windows 7 and later: The guidItem is valid.</summary>
			NIF_GUID = 0x00000020,

			/// <summary>
			/// Windows Vista and later. If the balloon notification cannot be displayed immediately, discard it. Use this flag for
			/// notifications that represent real-time information which would be meaningless or misleading if displayed at a later time. For
			/// example, a message that states "Your telephone is ringing." NIF_REALTIME is meaningful only when combined with the NIF_INFO flag.
			/// </summary>
			NIF_REALTIME = 0x00000040,

			/// <summary>
			/// Windows Vista and later. Use the standard tooltip. Normally, when uVersion is set to NOTIFYICON_VERSION_4, the standard
			/// tooltip is suppressed and can be replaced by the application-drawn, pop-up UI. If the application wants to show the standard
			/// tooltip with NOTIFYICON_VERSION_4, it can specify NIF_SHOWTIP to indicate the standard tooltip should still be shown.
			/// </summary>
			NIF_SHOWTIP = 0x00000080,
		}

		/// <summary>Info flags for NOTIFYICONDATA.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "fdcc42c1-b3e5-4b04-8d79-7b6c29699d53")]
		[Flags]
		public enum NIIF
		{
			/// <summary>No icon.</summary>
			NIIF_NONE = 0x00000000,

			/// <summary>An information icon.</summary>
			NIIF_INFO = 0x00000001,

			/// <summary>A warning icon.</summary>
			NIIF_WARNING = 0x00000002,

			/// <summary>An error icon.</summary>
			NIIF_ERROR = 0x00000003,

			/// <summary>
			/// Windows XP SP2 and later.
			/// <list type="bullet">
			/// <item>
			/// <description>Windows XP: Use the icon identified in hIcon as the notification balloon's title icon.</description>
			/// </item>
			/// <item>
			/// <description>
			/// Windows Vista and later: Use the icon identified in hBalloonIcon as the notification balloon's title icon.
			/// </description>
			/// </item>
			/// </list>
			/// </summary>
			NIIF_USER = 0x00000004,

			/// <summary>Windows XP and later. Reserved.</summary>
			NIIF_ICON_MASK = 0x0000000F,

			/// <summary>Windows XP and later. Do not play the associated sound. Applies only to notifications.</summary>
			NIIF_NOSOUND = 0x00000010,

			/// <summary>
			/// Windows Vista and later. The large version of the icon should be used as the notification icon. This corresponds to the icon
			/// with dimensions SM_CXICON x SM_CYICON. If this flag is not set, the icon with dimensions XM_CXSMICON x SM_CYSMICON is used.
			/// <list type="bullet">
			/// <item>
			/// <description>This flag can be used with all stock icons.</description>
			/// </item>
			/// <item>
			/// <description>
			/// Applications that use older customized icons (NIIF_USER with hIcon) must provide a new SM_CXICON x SM_CYICON version in the
			/// tray icon(hIcon). These icons are scaled down when they are displayed in the System Tray or System Control Area(SCA).
			/// </description>
			/// </item>
			/// <item>
			/// <description>
			/// New customized icons(NIIF_USER with hBalloonIcon) must supply an SM_CXICON x SM_CYICON version in the supplied icon(hBalloonIcon).
			/// </description>
			/// </item>
			/// </list>
			/// </summary>
			NIIF_LARGE_ICON = 0x00000020,

			/// <summary>
			/// Windows 7 and later. Do not display the balloon notification if the current user is in "quiet time", which is the first hour
			/// after a new user logs into his or her account for the first time. During this time, most notifications should not be sent or
			/// shown. This lets a user become accustomed to a new computer system without those distractions. Quiet time also occurs for
			/// each user after an operating system upgrade or clean installation. A notification sent with this flag during quiet time is
			/// not queued; it is simply dismissed unshown. The application can resend the notification later if it is still valid at that time.
			/// <para>
			/// Because an application cannot predict when it might encounter quiet time, we recommended that this flag always be set on all
			/// appropriate notifications by any application that means to honor quiet time.&gt;
			/// </para>
			/// <para>
			/// During quiet time, certain notifications should still be sent because they are expected by the user as feedback in response
			/// to a user action, for instance when he or she plugs in a USB device or prints a document.
			/// </para>
			/// <para>If the current user is not in quiet time, this flag has no effect.</para>
			/// </summary>
			NIIF_RESPECT_QUIET_TIME = 0x00000080
		}

		/// <summary>A value that specifies the action to be taken by <c>Shell_NotifyIcon</c>.</summary>
		public enum NIM
		{
			/// <summary>
			/// Adds an icon to the status area. The icon is given an identifier in the NOTIFYICONDATA structure pointed to by lpdata<74>either
			/// through its uID or guidItem member. This identifier is used in subsequent calls to Shell_NotifyIcon to perform later actions
			/// on the icon.
			/// </summary>
			NIM_ADD = 0x00000000,

			/// <summary>
			/// Modifies an icon in the status area. NOTIFYICONDATA structure pointed to by lpdata uses the ID originally assigned to the
			/// icon when it was added to the notification area (NIM_ADD) to identify the icon to be modified.
			/// </summary>
			NIM_MODIFY = 0x00000001,

			/// <summary>
			/// Deletes an icon from the status area. NOTIFYICONDATA structure pointed to by lpdata uses the ID originally assigned to the
			/// icon when it was added to the notification area (NIM_ADD) to identify the icon to be deleted.
			/// </summary>
			NIM_DELETE = 0x00000002,

			/// <summary>
			/// Shell32.dll version 5.0 and later only. Returns focus to the taskbar notification area. Notification area icons should use
			/// this message when they have completed their UI operation. For example, if the icon displays a shortcut menu, but the user
			/// presses ESC to cancel it, use NIM_SETFOCUS to return focus to the notification area.
			/// </summary>
			NIM_SETFOCUS = 0x00000003,

			/// <summary>
			/// Shell32.dll version 5.0 and later only. Instructs the notification area to behave according to the version number specified
			/// in the uVersion member of the structure pointed to by lpdata. The version number specifies which members are recognized.
			/// <para>
			/// NIM_SETVERSION must be called every time a notification area icon is added (NIM_ADD)&gt;. It does not need to be called with
			/// NIM_MOFIDY. The version setting is not persisted once a user logs off.
			/// </para>
			/// </summary>
			NIM_SETVERSION = 0x00000004,
		}

		/// <summary>State flags for NOTIFYICONDATA.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "fdcc42c1-b3e5-4b04-8d79-7b6c29699d53")]
		[Flags]
		public enum NIS
		{
			/// <summary>The icon is hidden.</summary>
			NIS_HIDDEN = 0x00000001,

			/// <summary>The icon resource is shared between multiple icons.</summary>
			NIS_SHAREDICON = 0x00000002
		}

		/// <summary>Flags for SHIsFileAvailableOffline.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "9acf212d-9309-42b0-ba96-faa0ecf0b865")]
		[Flags]
		public enum OFFLINE_STATUS
		{
			/// <summary>If the file is open, it is open in the cache.</summary>
			OFFLINE_STATUS_LOCAL = 0x0001,

			/// <summary>If the file is open, it is open on the server.</summary>
			OFFLINE_STATUS_REMOTE = 0x0002,

			/// <summary>The local copy is currently incomplete. The file cannot be opened in offline mode until it has been synchronized.</summary>
			OFFLINE_STATUS_INCOMPLETE = 0x0004,
		}

		/// <summary>Flags for SHInvokePrinterCommand.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "32a5802f-cef7-4dbd-affd-82285fe97a8c")]
		public enum PRINTACTION
		{
			/// <summary>0x0. Open the printer specified by . The parameter is ignored.</summary>
			PRINTACTION_OPEN = 0,

			/// <summary>
			/// 0x1. Display the property pages for the printer specified by . The parameter can be <c>NULL</c> or can name a specific
			/// property sheet to display, either by name or number. If the high <c>WORD</c> of is nonzero, it is assumed that this parameter
			/// is a pointer to a buffer that contains the name of the sheet to open. Otherwise, is seen as the zero-based index of the
			/// property sheet to open.
			/// </summary>
			PRINTACTION_PROPERTIES = 1,

			/// <summary>0x2. Install the network printer specified by . The parameter is ignored.</summary>
			PRINTACTION_NETINSTALL = 2,

			/// <summary>
			/// 0x3. Create a shortcut to the network printer specified by . The parameter specifies the drive and path of the folder in
			/// which to create the shortcut. The network printer must already have been installed on the local computer.
			/// </summary>
			PRINTACTION_NETINSTALLLINK = 3,

			/// <summary>0x4. Print a test page on the printer specified by . The parameter is ignored.</summary>
			PRINTACTION_TESTPAGE = 4,

			/// <summary>0x5. Open the network printer specified by . The parameter is ignored.</summary>
			PRINTACTION_OPENNETPRN = 5,

			/// <summary>0x6. Display the default document properties for the printer specified by . The parameter is ignored.</summary>
			PRINTACTION_DOCUMENTDEFAULTS = 6,

			/// <summary>0x7. Display the properties for the printer server specified by . The parameter is ignored.</summary>
			PRINTACTION_SERVERPROPERTIES = 7,
		}

		/// <summary>
		/// <para>
		/// Specifies the state of the machine for the current user in relation to the propriety of sending a notification. Used by SHQueryUserNotificationState.
		/// </para>
		/// </summary>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/ne-shellapi-query_user_notification_state typedef enum
		// QUERY_USER_NOTIFICATION_STATE { QUNS_NOT_PRESENT , QUNS_BUSY , QUNS_RUNNING_D3D_FULL_SCREEN , QUNS_PRESENTATION_MODE ,
		// QUNS_ACCEPTS_NOTIFICATIONS , QUNS_QUIET_TIME , QUNS_APP } ;
		[PInvokeData("shellapi.h", MSDNShortId = "b26439dd-6695-45d8-8c7f-5bbd5eaf5b54")]
		public enum QUERY_USER_NOTIFICATION_STATE
		{
			/// <summary>A screen saver is displayed, the machine is locked, or a nonactive Fast User Switching session is in progress.</summary>
			QUNS_NOT_PRESENT = 1,

			/// <summary>
			/// A full-screen application is running or Presentation Settings are applied. Presentation Settings allow a user to put their
			/// machine into a state fit for an uninterrupted presentation, such as a set of PowerPoint slides, with a single click.
			/// </summary>
			QUNS_BUSY,

			/// <summary>A full-screen (exclusive mode) Direct3D application is running.</summary>
			QUNS_RUNNING_D3D_FULL_SCREEN,

			/// <summary>The user has activated Windows presentation settings to block notifications and pop-up messages.</summary>
			QUNS_PRESENTATION_MODE,

			/// <summary>None of the other states are found, notifications can be freely sent.</summary>
			QUNS_ACCEPTS_NOTIFICATIONS,

			/// <summary>
			/// Introduced in Windows 7. The current user is in "quiet time", which is the first hour after a new user logs into his or her
			/// account for the first time. During this time, most notifications should not be sent or shown. This lets a user become
			/// accustomed to a new computer system without those distractions. Quiet time also occurs for each user after an operating
			/// system upgrade or clean installation. Applications should set the NIIF_RESPECT_QUIET_TIME flag in their notifications or
			/// balloon tooltip, which prevents those items from being displayed while the current user is in the quiet-time state. Note that
			/// during quiet time, if the user is in one of the other blocked modes (QUNS_NOT_PRESENT, QUNS_BUSY, QUNS_PRESENTATION_MODE, or
			/// QUNS_RUNNING_D3D_FULL_SCREEN) SHQueryUserNotificationState returns only that value, and does not report QUNS_QUIET_TIME.
			/// </summary>
			QUNS_QUIET_TIME,

			/// <summary>Introduced in Windows 8. A Windows Store app is running.</summary>
			QUNS_APP,
		}

		/// <summary>Flags that indicate the content and validity of the other structure members in <see cref="SHELLEXECUTEINFO"/>.</summary>
		[PInvokeData("Shellapi.h", MSDNShortId = "bb759784")]
		[Flags]
		public enum ShellExecuteMaskFlags : uint
		{
			/// <summary>Use default values.</summary>
			SEE_MASK_DEFAULT = 0x00000000,

			/// <summary>
			/// Use the class name given by the lpClass member. If both SEE_MASK_CLASSKEY and SEE_MASK_CLASSNAME are set, the class key is used.
			/// </summary>
			SEE_MASK_CLASSNAME = 0x00000001,

			/// <summary>
			/// Use the class key given by the hkeyClass member. If both SEE_MASK_CLASSKEY and SEE_MASK_CLASSNAME are set, the class key is used.
			/// </summary>
			SEE_MASK_CLASSKEY = 0x00000003,

			/// <summary>Use the item identifier list given by the lpIDList member. The lpIDList member must point to an ITEMIDLIST structure.</summary>
			SEE_MASK_IDLIST = 0x00000004,

			/// <summary>
			/// Use the IContextMenu interface of the selected item's shortcut menu handler. Use either lpFile to identify the item by its
			/// file system path or lpIDList to identify the item by its PIDL. This flag allows applications to use ShellExecuteEx to invoke
			/// verbs from shortcut menu extensions instead of the static verbs listed in the registry. <note>SEE_MASK_INVOKEIDLIST overrides
			/// and implies SEE_MASK_IDLIST.</note>
			/// </summary>
			SEE_MASK_INVOKEIDLIST = 0x0000000c,

			/// <summary>
			/// Use the icon given by the hIcon member. This flag cannot be combined with SEE_MASK_HMONITOR. <note>This flag is used only in
			/// Windows XP and earlier. It is ignored as of Windows Vista.</note>
			/// </summary>
			SEE_MASK_ICON = 0x00000010,

			/// <summary>Use the keyboard shortcut given by the dwHotKey member.</summary>
			SEE_MASK_HOTKEY = 0x00000020,

			/// <summary>
			/// Use to indicate that the hProcess member receives the process handle. This handle is typically used to allow an application
			/// to find out when a process created with ShellExecuteEx terminates. In some cases, such as when execution is satisfied through
			/// a DDE conversation, no handle will be returned. The calling application is responsible for closing the handle when it is no
			/// longer needed.
			/// </summary>
			SEE_MASK_NOCLOSEPROCESS = 0x00000040,

			/// <summary>
			/// Validate the share and connect to a drive letter. This enables reconnection of disconnected network drives. The lpFile member
			/// is a UNC path of a file on a network.
			/// </summary>
			SEE_MASK_CONNECTNETDRV = 0x00000080,

			/// <summary>
			/// Wait for the execute operation to complete before returning. This flag should be used by callers that are using ShellExecute
			/// forms that might result in an async activation, for example DDE, and create a process that might be run on a background
			/// thread. (Note: ShellExecuteEx runs on a background thread by default if the caller's threading model is not Apartment.) Calls
			/// to ShellExecuteEx from processes already running on background threads should always pass this flag. Also, applications that
			/// exit immediately after calling ShellExecuteEx should specify this flag.
			/// <para>
			/// If the execute operation is performed on a background thread and the caller did not specify the SEE_MASK_ASYNCOK flag, then
			/// the calling thread waits until the new process has started before returning. This typically means that either CreateProcess
			/// has been called, the DDE communication has completed, or that the custom execution delegate has notified ShellExecuteEx that
			/// it is done. If the SEE_MASK_WAITFORINPUTIDLE flag is specified, then ShellExecuteEx calls WaitForInputIdle and waits for the
			/// new process to idle before returning, with a maximum timeout of 1 minute.
			/// </para>
			/// <para>For further discussion on when this flag is necessary, see the Remarks section.</para>
			/// </summary>
			SEE_MASK_NOASYNC = 0x00000100,

			/// <summary>Do not use; use SEE_MASK_NOASYNC instead.</summary>
			SEE_MASK_FLAG_DDEWAIT = SEE_MASK_NOASYNC,

			/// <summary>Expand any environment variables specified in the string given by the lpDirectory or lpFile member.</summary>
			SEE_MASK_DOENVSUBST = 0x00000200,

			/// <summary>Do not display an error message box if an error occurs.</summary>
			SEE_MASK_FLAG_NO_UI = 0x00000400,

			/// <summary>Use this flag to indicate a Unicode application.</summary>
			SEE_MASK_UNICODE = 0x00004000,

			/// <summary>
			/// Use to inherit the parent's console for the new process instead of having it create a new console. It is the opposite of
			/// using a CREATE_NEW_CONSOLE flag with CreateProcess.
			/// </summary>
			SEE_MASK_NO_CONSOLE = 0x00008000,

			/// <summary>
			/// The execution can be performed on a background thread and the call should return immediately without waiting for the
			/// background thread to finish. Note that in certain cases ShellExecuteEx ignores this flag and waits for the process to finish
			/// before returning.
			/// </summary>
			SEE_MASK_ASYNCOK = 0x00100000,

			/// <summary>
			/// Use this flag when specifying a monitor on multi-monitor systems. The monitor is specified in the hMonitor member. This flag
			/// cannot be combined with SEE_MASK_ICON.
			/// </summary>
			SEE_MASK_HMONITOR = 0x00200000,

			/// <summary>
			/// Introduced in Windows XP. Do not perform a zone check. This flag allows ShellExecuteEx to bypass zone checking put into place
			/// by IAttachmentExecute.
			/// </summary>
			SEE_MASK_NOZONECHECKS = 0x00800000,

			/// <summary>Not used.</summary>
			SEE_MASK_NOQUERYCLASSSTORE = 0x01000000,

			/// <summary>
			/// After the new process is created, wait for the process to become idle before returning, with a one minute timeout. See
			/// WaitForInputIdle for more details.
			/// </summary>
			SEE_MASK_WAITFORINPUTIDLE = 0x02000000,

			/// <summary>
			/// Introduced in Windows XP. Keep track of the number of times this application has been launched. Applications with
			/// sufficiently high counts appear in the Start Menu's list of most frequently used programs.
			/// </summary>
			SEE_MASK_FLAG_LOG_USAGE = 0x04000000,

			/// <summary>
			/// The hInstApp member is used to specify the IUnknown of an object that implements IServiceProvider. This object will be used
			/// as a site pointer. The site pointer is used to provide services to the ShellExecute function, the handler binding process,
			/// and invoked verb handlers.
			/// </summary>
			SEE_MASK_FLAG_HINST_IS_SITE = 0x08000000
		}

		/// <summary>A value that indicates which operation to perform.</summary>
		[PInvokeData("Shellapi.h")]
		public enum ShellFileOperation
		{
			/// <summary>Move the files specified in pFrom to the location specified in pTo.</summary>
			FO_MOVE = 0x0001,

			/// <summary>Copy the files specified in the pFrom member to the location specified in the pTo member.</summary>
			FO_COPY = 0x0002,

			/// <summary>Delete the files specified in pFrom.</summary>
			FO_DELETE = 0x0003,

			/// <summary>
			/// Rename the file specified in pFrom. You cannot use this flag to rename multiple files with a single function call. Use
			/// FO_MOVE instead.
			/// </summary>
			FO_RENAME = 0x0004
		}

		/// <summary>FLags used by SHEmptyRecycleBin.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "c3995be7-bc8b-4e1f-8ef6-fdf4c0a75720")]
		[Flags]
		public enum SHERB
		{
			/// <summary>No dialog box confirming the deletion of the objects will be displayed.</summary>
			SHERB_NOCONFIRMATION = 0x00000001,

			/// <summary>No dialog box indicating the progress will be displayed.</summary>
			SHERB_NOPROGRESSUI = 0x00000002,

			/// <summary>No sound will be played when the operation is complete.</summary>
			SHERB_NOSOUND = 0x00000004
		}

		/// <summary>
		/// The flags that specify the file information to retrieve from <see cref="SHGetFileInfo(string, FileAttributes, ref SHFILEINFO,
		/// int, SHGFI)"/>.
		/// </summary>
		[PInvokeData("Shellapi.h", MSDNShortId = "bb762179")]
		[Flags]
		public enum SHGFI
		{
			/// <summary>
			/// Retrieve the handle to the icon that represents the file and the index of the icon within the system image list. The handle
			/// is copied to the hIcon member of the structure specified by psfi, and the index is copied to the iIcon member.
			/// </summary>
			SHGFI_ICON = 0x000000100,

			/// <summary>
			/// Retrieve the display name for the file, which is the name as it appears in Windows Explorer. The name is copied to the
			/// szDisplayName member of the structure specified in psfi. The returned display name uses the long file name, if there is one,
			/// rather than the 8.3 form of the file name. Note that the display name can be affected by settings such as whether extensions
			/// are shown.
			/// </summary>
			SHGFI_DISPLAYNAME = 0x000000200,

			/// <summary>
			/// Retrieve the string that describes the file's type. The string is copied to the szTypeName member of the structure specified
			/// in psfi.
			/// </summary>
			SHGFI_TYPENAME = 0x000000400,

			/// <summary>
			/// Retrieve the item attributes. The attributes are copied to the dwAttributes member of the structure specified in the psfi
			/// parameter. These are the same attributes that are obtained from IShellFolder::GetAttributesOf.
			/// </summary>
			SHGFI_ATTRIBUTES = 0x000000800,

			/// <summary>
			/// Retrieve the name of the file that contains the icon representing the file specified by pszPath, as returned by the
			/// IExtractIcon::GetIconLocation method of the file's icon handler. Also retrieve the icon index within that file. The name of
			/// the file containing the icon is copied to the szDisplayName member of the structure specified by psfi. The icon's index is
			/// copied to that structure's iIcon member.
			/// </summary>
			SHGFI_ICONLOCATION = 0x000001000,

			/// <summary>
			/// Retrieve the type of the executable file if pszPath identifies an executable file. The information is packed into the return
			/// value. This flag cannot be specified with any other flags.
			/// </summary>
			SHGFI_EXETYPE = 0x000002000,

			/// <summary>
			/// Retrieve the index of a system image list icon. If successful, the index is copied to the iIcon member of psfi. The return
			/// value is a handle to the system image list. Only those images whose indices are successfully copied to iIcon are valid.
			/// Attempting to access other images in the system image list will result in undefined behavior.
			/// </summary>
			SHGFI_SYSICONINDEX = 0x000004000,

			/// <summary>
			/// Modify SHGFI_ICON, causing the function to add the link overlay to the file's icon. The SHGFI_ICON flag must also be set.
			/// </summary>
			SHGFI_LINKOVERLAY = 0x000008000,

			/// <summary>
			/// Modify SHGFI_ICON, causing the function to blend the file's icon with the system highlight color. The SHGFI_ICON flag must
			/// also be set.
			/// </summary>
			SHGFI_SELECTED = 0x000010000,

			/// <summary>
			/// Modify SHGFI_ATTRIBUTES to indicate that the dwAttributes member of the SHFILEINFO structure at psfi contains the specific
			/// attributes that are desired. These attributes are passed to IShellFolder::GetAttributesOf. If this flag is not specified,
			/// 0xFFFFFFFF is passed to IShellFolder::GetAttributesOf, requesting all attributes. This flag cannot be specified with the
			/// SHGFI_ICON flag.
			/// </summary>
			SHGFI_ATTR_SPECIFIED = 0x000020000,

			/// <summary>
			/// Modify SHGFI_ICON, causing the function to retrieve the file's large icon. The SHGFI_ICON flag must also be set.
			/// </summary>
			SHGFI_LARGEICON = 0x000000000,

			/// <summary>
			/// Modify SHGFI_ICON, causing the function to retrieve the file's small icon. Also used to modify SHGFI_SYSICONINDEX, causing
			/// the function to return the handle to the system image list that contains small icon images. The SHGFI_ICON and/or
			/// SHGFI_SYSICONINDEX flag must also be set.
			/// </summary>
			SHGFI_SMALLICON = 0x000000001,

			/// <summary>
			/// Modify SHGFI_ICON, causing the function to retrieve the file's open icon. Also used to modify SHGFI_SYSICONINDEX, causing the
			/// function to return the handle to the system image list that contains the file's small open icon. A container object displays
			/// an open icon to indicate that the container is open. The SHGFI_ICON and/or SHGFI_SYSICONINDEX flag must also be set.
			/// </summary>
			SHGFI_OPENICON = 0x000000002,

			/// <summary>
			/// Modify SHGFI_ICON, causing the function to retrieve a Shell-sized icon. If this flag is not specified the function sizes the
			/// icon according to the system metric values. The SHGFI_ICON flag must also be set.
			/// </summary>
			SHGFI_SHELLICONSIZE = 0x000000004,

			/// <summary>Indicate that pszPath is the address of an ITEMIDLIST structure rather than a path name.</summary>
			SHGFI_PIDL = 0x000000008,

			/// <summary>
			/// Indicates that the function should not attempt to access the file specified by pszPath. Rather, it should act as if the file
			/// specified by pszPath exists with the file attributes passed in dwFileAttributes. This flag cannot be combined with the
			/// SHGFI_ATTRIBUTES, SHGFI_EXETYPE, or SHGFI_PIDL flags.
			/// </summary>
			SHGFI_USEFILEATTRIBUTES = 0x000000010,

			/// <summary>Apply the appropriate overlays to the file's icon. The SHGFI_ICON flag must also be set.</summary>
			SHGFI_ADDOVERLAYS = 0x000000020,

			/// <summary>
			/// Return the index of the overlay icon. The value of the overlay index is returned in the upper eight bits of the iIcon member
			/// of the structure specified by psfi. This flag requires that the SHGFI_ICON be set as well.
			/// </summary>
			SHGFI_OVERLAYINDEX = 0x000000040
		}

		/// <summary>Flags for SHGetNewLinkInfo.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "ca658d5c-af7b-400c-8f4d-7d4b07bf7f2b")]
		[Flags]
		public enum SHGNLI
		{
			/// <summary>
			/// 0x000000001. The target pointed to by is a PIDL that represents the target. If this flag is not included, is regarded as the
			/// address of a string that contains the path and file name of the target.
			/// </summary>
			SHGNLI_PIDL = 0x000000001,

			/// <summary>
			/// 0x000000002. Skip the normal checks that ensure that the shortcut name is unique within the destination folder. If this flag
			/// is not included, the function creates the shortcut name and then determines whether the name is unique in the destination
			/// folder. If a file with the same name already exists in the destination folder, the shortcut name will be modified. This
			/// process is repeated until a unique name is found.
			/// </summary>
			SHGNLI_NOUNIQUE = 0x000000002,

			/// <summary>0x000000004. The created name will be preceded by the string "Shortcut to ".</summary>
			SHGNLI_PREFIXNAME = 0x000000004,

			/// <summary>
			/// 0x000000008. Version 5.0 Do not add the .lnk file name extension. You must set the <c>_WIN32_IE</c> macro to 5.01 or greater
			/// to use this flag. For more information about versioning, see Shell and Common Controls Versions.
			/// </summary>
			SHGNLI_NOLNK = 0x000000008,

			/// <summary>
			/// 0x000000010. <c>Windows Vista and later</c>. Use the non-localized parsing name of the target pointed to by as the name of
			/// the shortcut file. If this flag is not set, the localized name is used.
			/// </summary>
			SHGNLI_NOLOCNAME = 0x000000010,

			/// <summary>
			/// 0x000000020. <c>Windows 7 and later</c>. Append a .url file name extension (rather than .lnk) to the name pointed to by . If
			/// this flag is not set, the shortcut name uses a .lnk extension unless SHGNLI_NOLNK is set.
			/// </summary>
			SHGNLI_USEURLEXT = 0x000000020,
		}

		/// <summary>Flags for SHGetStockIconInfo.</summary>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shgetstockiconinfo
		[PInvokeData("shellapi.h", MSDNShortId = "c08b1a53-e67c-4ed0-a9c6-d000c448e182")]
		public enum SHGSI : uint
		{
			/// <summary>
			/// The <c>szPath</c> and <c>iIcon</c> members of the SHSTOCKICONINFO structure receive the path and icon index of the requested
			/// icon, in a format suitable for passing to the ExtractIcon function. The numerical value of this flag is zero, so you always
			/// get the icon location regardless of other flags.
			/// </summary>
			SHGSI_ICONLOCATION = 0,

			/// <summary>The <c>hIcon</c> member of the SHSTOCKICONINFO structure receives a handle to the specified icon.</summary>
			SHGSI_ICON = SHGFI.SHGFI_ICON,

			/// <summary>
			/// The <c>iSysImageImage</c> member of the SHSTOCKICONINFO structure receives the index of the specified icon in the system imagelist.
			/// </summary>
			SHGSI_SYSICONINDEX = SHGFI.SHGFI_SYSICONINDEX,

			/// <summary>Modifies the SHGSI_ICON value by causing the function to add the link overlay to the file's icon.</summary>
			SHGSI_LINKOVERLAY = SHGFI.SHGFI_LINKOVERLAY,

			/// <summary>Modifies the SHGSI_ICON value by causing the function to blend the icon with the system highlight color.</summary>
			SHGSI_SELECTED = SHGFI.SHGFI_SELECTED,

			/// <summary>
			/// Modifies the SHGSI_ICON value by causing the function to retrieve the large version of the icon, as specified by the
			/// SM_CXICON and SM_CYICON system metrics.
			/// </summary>
			SHGSI_LARGEICON = SHGFI.SHGFI_LARGEICON,

			/// <summary>
			/// Modifies the SHGSI_ICON value by causing the function to retrieve the small version of the icon, as specified by the
			/// SM_CXSMICON and SM_CYSMICON system metrics.
			/// </summary>
			SHGSI_SMALLICON = SHGFI.SHGFI_SMALLICON,

			/// <summary>
			/// Modifies the SHGSI_LARGEICON or SHGSI_SMALLICON values by causing the function to retrieve the Shell-sized icons rather than
			/// the sizes specified by the system metrics.
			/// </summary>
			SHGSI_SHELLICONSIZE = SHGFI.SHGFI_SHELLICONSIZE,
		}

		/// <summary>
		/// <para>Used by SHGetStockIconInfo to identify which stock system icon to retrieve.</para>
		/// </summary>
		/// <remarks>
		/// <para>SIID_INVALID, with a value of -1, indicates an invalid <c>SHSTOCKICONID</c> value.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/ne-shellapi-shstockiconid typedef enum SHSTOCKICONID {
		// SIID_DOCNOASSOC , SIID_DOCASSOC , SIID_APPLICATION , SIID_FOLDER , SIID_FOLDEROPEN , SIID_DRIVE525 , SIID_DRIVE35 ,
		// SIID_DRIVEREMOVE , SIID_DRIVEFIXED , SIID_DRIVENET , SIID_DRIVENETDISABLED , SIID_DRIVECD , SIID_DRIVERAM , SIID_WORLD ,
		// SIID_SERVER , SIID_PRINTER , SIID_MYNETWORK , SIID_FIND , SIID_HELP , SIID_SHARE , SIID_LINK , SIID_SLOWFILE , SIID_RECYCLER ,
		// SIID_RECYCLERFULL , SIID_MEDIACDAUDIO , SIID_LOCK , SIID_AUTOLIST , SIID_PRINTERNET , SIID_SERVERSHARE , SIID_PRINTERFAX ,
		// SIID_PRINTERFAXNET , SIID_PRINTERFILE , SIID_STACK , SIID_MEDIASVCD , SIID_STUFFEDFOLDER , SIID_DRIVEUNKNOWN , SIID_DRIVEDVD ,
		// SIID_MEDIADVD , SIID_MEDIADVDRAM , SIID_MEDIADVDRW , SIID_MEDIADVDR , SIID_MEDIADVDROM , SIID_MEDIACDAUDIOPLUS , SIID_MEDIACDRW ,
		// SIID_MEDIACDR , SIID_MEDIACDBURN , SIID_MEDIABLANKCD , SIID_MEDIACDROM , SIID_AUDIOFILES , SIID_IMAGEFILES , SIID_VIDEOFILES ,
		// SIID_MIXEDFILES , SIID_FOLDERBACK , SIID_FOLDERFRONT , SIID_SHIELD , SIID_WARNING , SIID_INFO , SIID_ERROR , SIID_KEY ,
		// SIID_SOFTWARE , SIID_RENAME , SIID_DELETE , SIID_MEDIAAUDIODVD , SIID_MEDIAMOVIEDVD , SIID_MEDIAENHANCEDCD , SIID_MEDIAENHANCEDDVD
		// , SIID_MEDIAHDDVD , SIID_MEDIABLURAY , SIID_MEDIAVCD , SIID_MEDIADVDPLUSR , SIID_MEDIADVDPLUSRW , SIID_DESKTOPPC , SIID_MOBILEPC ,
		// SIID_USERS , SIID_MEDIASMARTMEDIA , SIID_MEDIACOMPACTFLASH , SIID_DEVICECELLPHONE , SIID_DEVICECAMERA , SIID_DEVICEVIDEOCAMERA ,
		// SIID_DEVICEAUDIOPLAYER , SIID_NETWORKCONNECT , SIID_INTERNET , SIID_ZIPFILE , SIID_SETTINGS , SIID_DRIVEHDDVD , SIID_DRIVEBD ,
		// SIID_MEDIAHDDVDROM , SIID_MEDIAHDDVDR , SIID_MEDIAHDDVDRAM , SIID_MEDIABDROM , SIID_MEDIABDR , SIID_MEDIABDRE ,
		// SIID_CLUSTEREDDRIVE , SIID_MAX_ICONS } ;
		[PInvokeData("shellapi.h", MSDNShortId = "37da5555-3626-465e-b834-3a28b75495c4")]
		public enum SHSTOCKICONID
		{
			/// <summary>Document of a type with no associated application.</summary>
			SIID_DOCNOASSOC = 0,

			/// <summary>Document of a type with an associated application.</summary>
			SIID_DOCASSOC = 1,

			/// <summary>Generic application with no custom icon.</summary>
			SIID_APPLICATION = 2,

			/// <summary>Folder (generic, unspecified state).</summary>
			SIID_FOLDER = 3,

			/// <summary>Folder (open).</summary>
			SIID_FOLDEROPEN = 4,

			/// <summary>5.25-inch disk drive.</summary>
			SIID_DRIVE525 = 5,

			/// <summary>3.5-inch disk drive.</summary>
			SIID_DRIVE35 = 6,

			/// <summary>Removable drive.</summary>
			SIID_DRIVEREMOVE = 7,

			/// <summary>Fixed drive (hard disk).</summary>
			SIID_DRIVEFIXED = 8,

			/// <summary>Network drive (connected).</summary>
			SIID_DRIVENET = 9,

			/// <summary>Network drive (disconnected).</summary>
			SIID_DRIVENETDISABLED = 10,

			/// <summary>CD drive.</summary>
			SIID_DRIVECD = 11,

			/// <summary>RAM disk drive.</summary>
			SIID_DRIVERAM = 12,

			/// <summary>The entire network.</summary>
			SIID_WORLD = 13,

			/// <summary>A computer on the network.</summary>
			SIID_SERVER = 15,

			/// <summary>A local printer or print destination.</summary>
			SIID_PRINTER = 16,

			/// <summary>The Network virtual folder (FOLDERID_NetworkFolder/CSIDL_NETWORK).</summary>
			SIID_MYNETWORK = 17,

			/// <summary>The Search feature.</summary>
			SIID_FIND = 22,

			/// <summary>The Help and Support feature.</summary>
			SIID_HELP = 23,

			/// <summary>Overlay for a shared item.</summary>
			SIID_SHARE = 28,

			/// <summary>Overlay for a shortcut.</summary>
			SIID_LINK = 29,

			/// <summary>Overlay for items that are expected to be slow to access.</summary>
			SIID_SLOWFILE = 30,

			/// <summary>The Recycle Bin (empty).</summary>
			SIID_RECYCLER = 31,

			/// <summary>The Recycle Bin (not empty).</summary>
			SIID_RECYCLERFULL = 32,

			/// <summary>Audio CD media.</summary>
			SIID_MEDIACDAUDIO = 40,

			/// <summary>Security lock.</summary>
			SIID_LOCK = 47,

			/// <summary>A virtual folder that contains the results of a search.</summary>
			SIID_AUTOLIST = 49,

			/// <summary>A network printer.</summary>
			SIID_PRINTERNET = 50,

			/// <summary>A server shared on a network.</summary>
			SIID_SERVERSHARE = 51,

			/// <summary>A local fax printer.</summary>
			SIID_PRINTERFAX = 52,

			/// <summary>A network fax printer.</summary>
			SIID_PRINTERFAXNET = 53,

			/// <summary>A file that receives the output of a Print to file operation.</summary>
			SIID_PRINTERFILE = 54,

			/// <summary>A category that results from a Stack by command to organize the contents of a folder.</summary>
			SIID_STACK = 55,

			/// <summary>Super Video CD (SVCD) media.</summary>
			SIID_MEDIASVCD = 56,

			/// <summary>A folder that contains only subfolders as child items.</summary>
			SIID_STUFFEDFOLDER = 57,

			/// <summary>Unknown drive type.</summary>
			SIID_DRIVEUNKNOWN = 58,

			/// <summary>DVD drive.</summary>
			SIID_DRIVEDVD = 59,

			/// <summary>DVD media.</summary>
			SIID_MEDIADVD = 60,

			/// <summary>DVD-RAM media.</summary>
			SIID_MEDIADVDRAM = 61,

			/// <summary>DVD-RW media.</summary>
			SIID_MEDIADVDRW = 62,

			/// <summary>DVD-R media.</summary>
			SIID_MEDIADVDR = 63,

			/// <summary>DVD-ROM media.</summary>
			SIID_MEDIADVDROM = 64,

			/// <summary>CD+ (enhanced audio CD) media.</summary>
			SIID_MEDIACDAUDIOPLUS = 65,

			/// <summary>CD-RW media.</summary>
			SIID_MEDIACDRW = 66,

			/// <summary>CD-R media.</summary>
			SIID_MEDIACDR = 67,

			/// <summary>A writeable CD in the process of being burned.</summary>
			SIID_MEDIACDBURN = 68,

			/// <summary>Blank writable CD media.</summary>
			SIID_MEDIABLANKCD = 69,

			/// <summary>CD-ROM media.</summary>
			SIID_MEDIACDROM = 70,

			/// <summary>An audio file.</summary>
			SIID_AUDIOFILES = 71,

			/// <summary>An image file.</summary>
			SIID_IMAGEFILES = 72,

			/// <summary>A video file.</summary>
			SIID_VIDEOFILES = 73,

			/// <summary>A mixed file.</summary>
			SIID_MIXEDFILES = 74,

			/// <summary>Folder back.</summary>
			SIID_FOLDERBACK = 75,

			/// <summary>Folder front.</summary>
			SIID_FOLDERFRONT = 76,

			/// <summary>Security shield. Use for UAC prompts only.</summary>
			SIID_SHIELD = 77,

			/// <summary>Warning.</summary>
			SIID_WARNING = 78,

			/// <summary>Informational.</summary>
			SIID_INFO = 79,

			/// <summary>Error.</summary>
			SIID_ERROR = 80,

			/// <summary>Key.</summary>
			SIID_KEY = 81,

			/// <summary>Software.</summary>
			SIID_SOFTWARE = 82,

			/// <summary>A UI item, such as a button, that issues a rename command.</summary>
			SIID_RENAME = 83,

			/// <summary>A UI item, such as a button, that issues a delete command.</summary>
			SIID_DELETE = 84,

			/// <summary>Audio DVD media.</summary>
			SIID_MEDIAAUDIODVD = 85,

			/// <summary>Movie DVD media.</summary>
			SIID_MEDIAMOVIEDVD = 86,

			/// <summary>Enhanced CD media.</summary>
			SIID_MEDIAENHANCEDCD = 87,

			/// <summary>Enhanced DVD media.</summary>
			SIID_MEDIAENHANCEDDVD = 88,

			/// <summary>High definition DVD media in the HD DVD format.</summary>
			SIID_MEDIAHDDVD = 89,

			/// <summary>High definition DVD media in the Blu-ray Disc<73> format.</summary>
			SIID_MEDIABLURAY = 90,

			/// <summary>Video CD (VCD) media.</summary>
			SIID_MEDIAVCD = 91,

			/// <summary>DVD+R media.</summary>
			SIID_MEDIADVDPLUSR = 92,

			/// <summary>DVD+RW media.</summary>
			SIID_MEDIADVDPLUSRW = 93,

			/// <summary>A desktop computer.</summary>
			SIID_DESKTOPPC = 94,

			/// <summary>A mobile computer (laptop).</summary>
			SIID_MOBILEPC = 95,

			/// <summary>The User Accounts Control Panel item.</summary>
			SIID_USERS = 96,

			/// <summary>Smart media.</summary>
			SIID_MEDIASMARTMEDIA = 97,

			/// <summary>CompactFlash media.</summary>
			SIID_MEDIACOMPACTFLASH = 98,

			/// <summary>A cell phone.</summary>
			SIID_DEVICECELLPHONE = 99,

			/// <summary>A digital camera.</summary>
			SIID_DEVICECAMERA = 100,

			/// <summary>A digital video camera.</summary>
			SIID_DEVICEVIDEOCAMERA = 101,

			/// <summary>An audio player.</summary>
			SIID_DEVICEAUDIOPLAYER = 102,

			/// <summary>Connect to network.</summary>
			SIID_NETWORKCONNECT = 103,

			/// <summary>The Network and Internet Control Panel item.</summary>
			SIID_INTERNET = 104,

			/// <summary>A compressed file with a .zip file name extension.</summary>
			SIID_ZIPFILE = 105,

			/// <summary>The Additional Options Control Panel item.</summary>
			SIID_SETTINGS = 106,

			/// <summary>
			/// Windows Vista with Service Pack 1 (SP1) and later. High definition DVD drive (any type - HD DVD-ROM, HD DVD-R, HD-DVD-RAM)
			/// that uses the HD DVD format.
			/// </summary>
			SIID_DRIVEHDDVD = 132,

			/// <summary>
			/// Windows Vista with SP1 and later. High definition DVD drive (any type - BD-ROM, BD-R, BD-RE) that uses the Blu-ray Disc format.
			/// </summary>
			SIID_DRIVEBD = 133,

			/// <summary>Windows Vista with SP1 and later. High definition DVD-ROM media in the HD DVD-ROM format.</summary>
			SIID_MEDIAHDDVDROM = 134,

			/// <summary>Windows Vista with SP1 and later. High definition DVD-R media in the HD DVD-R format.</summary>
			SIID_MEDIAHDDVDR = 135,

			/// <summary>Windows Vista with SP1 and later. High definition DVD-RAM media in the HD DVD-RAM format.</summary>
			SIID_MEDIAHDDVDRAM = 136,

			/// <summary>Windows Vista with SP1 and later. High definition DVD-ROM media in the Blu-ray Disc BD-ROM format.</summary>
			SIID_MEDIABDROM = 137,

			/// <summary>Windows Vista with SP1 and later. High definition write-once media in the Blu-ray Disc BD-R format.</summary>
			SIID_MEDIABDR = 138,

			/// <summary>Windows Vista with SP1 and later. High definition read/write media in the Blu-ray Disc BD-RE format.</summary>
			SIID_MEDIABDRE = 139,

			/// <summary>Windows Vista with SP1 and later. A cluster disk array.</summary>
			SIID_CLUSTEREDDRIVE = 140,

			/// <summary>The highest valid value in the enumeration. Values over 160 are Windows 7-only icons.</summary>
			SIID_MAX_ICONS = 181,
		}

		/// <summary>
		/// <para>Retrieves an object that implements an IQueryAssociations interface.</para>
		/// </summary>
		/// <param name="rgClasses">
		/// <para>Type: <c>const ASSOCIATIONELEMENT*</c></para>
		/// <para>A pointer to an array of ASSOCIATIONELEMENT structures.</para>
		/// </param>
		/// <param name="cClasses">
		/// <para>Type: <c>ULONG</c></para>
		/// <para>The number of elements in the array pointed to by .</para>
		/// </param>
		/// <param name="riid">
		/// <para>Type: <c>REFIID</c></para>
		/// <para>Reference to the desired IID, normally IID_IQueryAssociations.</para>
		/// </param>
		/// <param name="ppv">
		/// <para>Type: <c>void**</c></para>
		/// <para>When this method returns, contains the interface pointer requested in . This is normally IQueryAssociations.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>For systems earlier than Windows Vista, use the AssocCreate function.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-assoccreateforclasses SHSTDAPI AssocCreateForClasses(
		// const ASSOCIATIONELEMENT *rgClasses, ULONG cClasses, REFIID riid, void **ppv );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "43257507-dd5e-4622-8445-c132187fd1e5")]
		public static extern HRESULT AssocCreateForClasses([In, MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)] ASSOCIATIONELEMENT[] rgClasses, uint cClasses, in Guid riid, [MarshalAs(UnmanagedType.IUnknown)] out object ppv);

		/// <summary>
		/// <para>
		/// Parses a Unicode command line string and returns an array of pointers to the command line arguments, along with a count of such
		/// arguments, in a way that is similar to the standard C run-time and values.
		/// </para>
		/// </summary>
		/// <param name="lpCmdLine">
		/// <para>Type: <c>LPCWSTR</c></para>
		/// <para>
		/// Pointer to a <c>null</c>-terminated Unicode string that contains the full command line. If this parameter is an empty string the
		/// function returns the path to the current executable file.
		/// </para>
		/// </param>
		/// <param name="pNumArgs">
		/// <para>Type: <c>int*</c></para>
		/// <para>Pointer to an <c>int</c> that receives the number of array elements returned, similar to .</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>LPWSTR*</c></para>
		/// <para>A pointer to an array of <c>LPWSTR</c> values, similar to .</para>
		/// <para>If the function fails, the return value is <c>NULL</c>. To get extended error information, call GetLastError.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// The address returned by <c>CommandLineToArgvW</c> is the address of the first element in an array of <c>LPWSTR</c> values; the
		/// number of pointers in this array is indicated by . Each pointer to a <c>null</c>-terminated Unicode string represents an
		/// individual argument found on the command line.
		/// </para>
		/// <para>
		/// <c>CommandLineToArgvW</c> allocates a block of contiguous memory for pointers to the argument strings, and for the argument
		/// strings themselves; the calling application must free the memory used by the argument list when it is no longer needed. To free
		/// the memory, use a single call to the LocalFree function.
		/// </para>
		/// <para>For more information about the and argument convention, see Argument Definitions and Parsing C++ Command-Line Arguments.</para>
		/// <para>The GetCommandLineW function can be used to get a command line string that is suitable for use as the parameter.</para>
		/// <para>
		/// This function accepts command lines that contain a program name; the program name can be enclosed in quotation marks or not.
		/// </para>
		/// <para>
		/// <c>CommandLineToArgvW</c> has a special interpretation of backslash characters when they are followed by a quotation mark
		/// character ("). This interpretation assumes that any preceding argument is a valid file system path, or else it may behave unpredictably.
		/// </para>
		/// <para>
		/// This special interpretation controls the "in quotes" mode tracked by the parser. When this mode is off, whitespace terminates the
		/// current argument. When on, whitespace is added to the argument like all other characters.
		/// </para>
		/// <list type="bullet">
		/// <item>
		/// 2 backslashes followed by a quotation mark produce backslashes followed by begin/end quote. This does not become part of the
		/// parsed argument, but toggles the "in quotes" mode.
		/// </item>
		/// <item>
		/// (2) + 1 backslashes followed by a quotation mark again produce backslashes followed by a quotation mark literal ("). This does
		/// not toggle the "in quotes" mode.
		/// </item>
		/// <item>backslashes not followed by a quotation mark simply produce backslashes.</item>
		/// </list>
		/// <para>
		/// <c>Important</c><c>CommandLineToArgvW</c> treats whitespace outside of quotation marks as argument delimiters. However, if starts
		/// with any amount of whitespace, <c>CommandLineToArgvW</c> will consider the first argument to be an empty string. Excess
		/// whitespace at the end of is ignored.
		/// </para>
		/// <para>Examples</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-commandlinetoargvw LPWSTR * CommandLineToArgvW( LPCWSTR
		// lpCmdLine, int *pNumArgs );
		[DllImport(Lib.Shell32, SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "9889a016-b7a5-402b-8305-6f7c199d41b3")]
		[return: MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.LPWStr, SizeParamIndex = 1)]
		public static extern string[] CommandLineToArgvW(string lpCmdLine, out int pNumArgs);

		/// <summary>
		/// <para>Registers whether a window accepts dropped files.</para>
		/// </summary>
		/// <param name="hWnd">
		/// <para>Type: <c>HWND</c></para>
		/// <para>The identifier of the window that is registering whether it will accept dropped files.</para>
		/// </param>
		/// <param name="fAccept">
		/// <para>Type: <c>BOOL</c></para>
		/// <para>
		/// A value that indicates if the window identified by the parameter accepts dropped files. This value is <c>TRUE</c> to accept
		/// dropped files or <c>FALSE</c> to discontinue accepting dropped files.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>No return value.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// An application that calls <c>DragAcceptFiles</c> with the parameter set to <c>TRUE</c> has identified itself as able to process
		/// the WM_DROPFILES message from File Manager.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-dragacceptfiles void DragAcceptFiles( HWND hWnd, BOOL
		// fAccept );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "1f16f6e4-7847-4bc7-adce-995876db24bd")]
		public static extern void DragAcceptFiles(HWND hWnd, [MarshalAs(UnmanagedType.Bool)] bool fAccept);

		/// <summary>
		/// <para>Releases memory that the system allocated for use in transferring file names to the application.</para>
		/// </summary>
		/// <param name="hDrop">
		/// <para>Type: <c>HDROP</c></para>
		/// <para>
		/// Identifier of the structure that describes dropped files. This handle is retrieved from the parameter of the WM_DROPFILES message.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>No return value.</para>
		/// </returns>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-dragfinish void DragFinish( HDROP hDrop );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "9b15e8a5-de68-4dcb-8e1a-0ee0393aa9db")]
		public static extern void DragFinish(HDROP hDrop);

		/// <summary>
		/// <para>Retrieves the names of dropped files that result from a successful drag-and-drop operation.</para>
		/// </summary>
		/// <param name="hDrop">
		/// <para>Type: <c>HDROP</c></para>
		/// <para>Identifier of the structure that contains the file names of the dropped files.</para>
		/// </param>
		/// <param name="iFile">
		/// <para>Type: <c>UINT</c></para>
		/// <para>
		/// Index of the file to query. If the value of this parameter is 0xFFFFFFFF, <c>DragQueryFile</c> returns a count of the files
		/// dropped. If the value of this parameter is between zero and the total number of files dropped, <c>DragQueryFile</c> copies the
		/// file name with the corresponding value to the buffer pointed to by the parameter.
		/// </para>
		/// </param>
		/// <param name="lpszFile">
		/// <para>Type: <c>LPTSTR</c></para>
		/// <para>
		/// The address of a buffer that receives the file name of a dropped file when the function returns. This file name is a
		/// null-terminated string. If this parameter is <c>NULL</c>, <c>DragQueryFile</c> returns the required size, in characters, of this buffer.
		/// </para>
		/// </param>
		/// <param name="cch">
		/// <para>Type: <c>UINT</c></para>
		/// <para>The size, in characters, of the buffer.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>UINT</c></para>
		/// <para>A nonzero value indicates a successful call.</para>
		/// <para>
		/// When the function copies a file name to the buffer, the return value is a count of the characters copied, not including the
		/// terminating null character.
		/// </para>
		/// <para>
		/// If the index value is 0xFFFFFFFF, the return value is a count of the dropped files. Note that the index variable itself returns
		/// unchanged, and therefore remains 0xFFFFFFFF.
		/// </para>
		/// <para>
		/// If the index value is between zero and the total number of dropped files, and the buffer address is <c>NULL</c>, the return value
		/// is the required size, in characters, of the buffer, the terminating null character.
		/// </para>
		/// </returns>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-dragqueryfilea UINT DragQueryFileA( HDROP hDrop, UINT
		// iFile, LPSTR lpszFile, UINT cch );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "93fab381-9035-46c4-ba9d-efb2d0801d84")]
		public static extern uint DragQueryFile(HDROP hDrop, uint iFile, string lpszFile, uint cch);

		/// <summary>
		/// <para>Retrieves the position of the mouse pointer at the time a file was dropped during a drag-and-drop operation.</para>
		/// </summary>
		/// <param name="hDrop">
		/// <para>Type: <c>HDROP</c></para>
		/// <para>Handle of the drop structure that describes the dropped file.</para>
		/// </param>
		/// <param name="ppt">
		/// <para>TBD</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>BOOL</c></para>
		/// <para><c>TRUE</c> if the drop occurred in the client area of the window; otherwise <c>FALSE</c>.</para>
		/// </returns>
		/// <remarks>
		/// <para>The window for which coordinates are returned is the window that received the WM_DROPFILES message.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-dragquerypoint BOOL DragQueryPoint( HDROP hDrop, POINT
		// *ppt );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "87794ab0-a075-4a1f-869f-5998bdc57a1d")]
		[return: MarshalAs(UnmanagedType.Bool)]
		public static extern bool DragQueryPoint(HDROP hDrop, ref System.Drawing.Point ppt);

		/// <summary>Creates a duplicate of a specified icon.</summary>
		/// <param name="hInst">Type: <c>HINSTANCE</c></param>
		/// <param name="hIcon">
		/// <para>Type: <c>HICON</c></para>
		/// <para>Handle to the icon to be duplicated.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HICON</c></para>
		/// <para>If successful, the function returns the handle to the new icon that was created; otherwise, <c>NULL</c>.</para>
		/// </returns>
		// HICON DuplicateIcon( _Reserved_ HINSTANCE hInst, _In_ HICON hIcon); https://msdn.microsoft.com/en-us/library/windows/desktop/bb776411(v=vs.85).aspx
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("Shellapi.h", MSDNShortId = "bb776411")]
		public static extern SafeHICON DuplicateIcon(HINSTANCE hInst, HICON hIcon);

		/// <summary>Gets a handle to an icon stored as a resource in a file or an icon stored in a file's associated executable file.</summary>
		/// <param name="hInst">A handle to the instance of the calling application.</param>
		/// <param name="lpIconPath">
		/// Pointer to a string that, on entry, specifies the full path and file name of the file that contains the icon. The function
		/// extracts the icon handle from that file, or from an executable file associated with that file.
		/// <para>
		/// When this function returns, if the icon handle was obtained from an executable file (either an executable file pointed to by
		/// lpIconPath or an associated executable file) the function stores the full path and file name of that executable in the buffer
		/// pointed to by this parameter.
		/// </para>
		/// </param>
		/// <param name="lpiIcon">
		/// Pointer to a WORD value that, on entry, specifies the index of the icon whose handle is to be obtained.
		/// <para>
		/// When the function returns, if the icon handle was obtained from an executable file(either an executable file pointed to by
		/// lpIconPath or an associated executable file), this value points to the icon's index in that file.
		/// </para>
		/// </param>
		/// <returns>
		/// If the function succeeds, the return value is an icon handle. If the icon is extracted from an associated executable file, the
		/// function stores the full path and file name of the executable file in the string pointed to by lpIconPath, and stores the icon's
		/// identifier in the WORD pointed to by lpiIcon.
		/// <para>If the function fails, the return value is NULL.</para>
		/// </returns>
		// public static Icon ExtractAssociatedIcon( string filePath ) https://msdn.microsoft.com/en-us/library/system.drawing.icon.extractassociatedicon(v=vs.110).aspx
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("Shellapi.h", MSDNShortId = "bb776414")]
		public static extern SafeHICON ExtractAssociatedIcon(HINSTANCE hInst, StringBuilder lpIconPath, ref ushort lpiIcon);

		/// <summary>
		/// <para>
		/// Gets a handle to an icon stored as a resource in a file or an icon stored in a file's associated executable file. It extends the
		/// ExtractAssociatedIcon function by retrieving the icon's ID when that icon is extracted from an executable file.
		/// </para>
		/// </summary>
		/// <param name="hInst">
		/// <para>Type: <c>HINSTANCE</c></para>
		/// <para>The handle of the module from which to extract the icon.</para>
		/// </param>
		/// <param name="pszIconPath">
		/// <para>TBD</para>
		/// </param>
		/// <param name="piIconIndex">
		/// <para>TBD</para>
		/// </param>
		/// <param name="piIconId">
		/// <para>TBD</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HICON</c></para>
		/// <para>Returns the icon's handle if successful, otherwise <c>NULL</c>.</para>
		/// </returns>
		/// <remarks>
		/// <para>The icon handle returned by this function must be released by calling DestroyIcon when it is no longer needed.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-extractassociatediconexa HICON ExtractAssociatedIconExA(
		// HINSTANCE hInst, LPSTR pszIconPath, WORD *piIconIndex, WORD *piIconId );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "f32260b0-917b-4406-aeee-34f71a7c7309")]
		public static extern SafeHICON ExtractAssociatedIconEx(HINSTANCE hInst, StringBuilder pszIconPath, ref ushort piIconIndex, ref ushort piIconId);

		/// <summary>
		/// <para>Gets a handle to an icon from the specified executable file, DLL, or icon file.</para>
		/// <para>To retrieve an array of handles to large or small icons, use the <c>ExtractIconEx</c> function.</para>
		/// </summary>
		/// <param name="hInst">
		/// <para>Type: <c>HINSTANCE</c></para>
		/// <para>Handle to the instance of the application that calls the function.</para>
		/// </param>
		/// <param name="lpszExeFileName">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>Pointer to a null-terminated string that specifies the name of an executable file, DLL, or icon file.</para>
		/// </param>
		/// <param name="nIconIndex">
		/// <para>Type: <c>UINT</c></para>
		/// <para>
		/// Specifies the zero-based index of the icon to retrieve. For example, if this value is 0, the function returns a handle to the
		/// first icon in the specified file.
		/// </para>
		/// <para>
		/// If this value is -1, the function returns the total number of icons in the specified file. If the file is an executable file or
		/// DLL, the return value is the number of RT_GROUP_ICON resources. If the file is an .ICO file, the return value is 1.
		/// </para>
		/// <para>
		/// If this value is a negative number not equal to <20>1, the function returns a handle to the icon in the specified file whose
		/// resource identifier is equal to the absolute value of nIconIndex. For example, you should use <20>3 to extract the icon whose
		/// resource identifier is 3. To extract the icon whose resource identifier is 1, use the <c>ExtractIconEx</c> function.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HICON</c></para>
		/// <para>
		/// The return value is a handle to an icon. If the file specified was not an executable file, DLL, or icon file, the return is 1. If
		/// no icons were found in the file, the return value is <c>NULL</c>.
		/// </para>
		/// </returns>
		// HICON ExtractIcon( _Reserved_ HINSTANCE hInst, _In_ LPCTSTR lpszExeFileName, UINT nIconIndex); https://msdn.microsoft.com/en-us/library/windows/desktop/bb776416(v=vs.85).aspx
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("Shellapi.h", MSDNShortId = "bb776416")]
		public static extern SafeHICON ExtractIcon(HINSTANCE hInst, string lpszExeFileName, uint nIconIndex);

		/// <summary>
		/// The ExtractIconEx function creates an array of handles to large or small icons extracted from the specified executable file, DLL,
		/// or icon file.
		/// </summary>
		/// <param name="lpszFile">String that specifies the name of an executable file, DLL, or icon file from which icons will be extracted.</param>
		/// <param name="nIconIndex">
		/// Specifies the zero-based index of the first icon to extract. For example, if this value is zero, the function extracts the first
		/// icon in the specified file.
		/// <para>
		/// If this value is <20>1 and phiconLarge and phiconSmall are both NULL, the function returns the total number of icons in the
		/// specified file. If the file is an executable file or DLL, the return value is the number of RT_GROUP_ICON resources. If the file
		/// is an .ico file, the return value is 1.
		/// </para>
		/// <para>
		/// If this value is a negative number and either phiconLarge or phiconSmall is not NULL, the function begins by extracting the icon
		/// whose resource identifier is equal to the absolute value of nIconIndex. For example, use -3 to extract the icon whose resource
		/// identifier is 3.
		/// </para>
		/// </param>
		/// <param name="phIconLarge">
		/// An array of icon handles that receives handles to the large icons extracted from the file. If this parameter is NULL, no large
		/// icons are extracted from the file.
		/// </param>
		/// <param name="phIconSmall">
		/// Array of icon handles that receives handles to the small icons extracted from the file. If this parameter is NULL, no small icons
		/// are extracted from the file.
		/// </param>
		/// <param name="nIcons">The number of icons to extract from the file.</param>
		/// <returns>
		/// If the nIconIndex parameter is -1, the phiconLarge parameter is NULL, and the phiconSmall parameter is NULL, then the return
		/// value is the number of icons contained in the specified file. Otherwise, the return value is the number of icons successfully
		/// extracted from the file.
		/// </returns>
		[DllImport(Lib.Shell32, CharSet = CharSet.Auto)]
		[PInvokeData("Shellapi.h", MSDNShortId = "ms648069")]
		public static extern int ExtractIconEx([MarshalAs(UnmanagedType.LPTStr)] string lpszFile, int nIconIndex,
			[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 4)] SafeHICON[] phIconLarge,
			[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 4)] SafeHICON[] phIconSmall, int nIcons);

		/// <summary>
		/// <para>Retrieves the name of and handle to the executable (.exe) file associated with a specific document file.</para>
		/// </summary>
		/// <param name="lpFile">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>The address of a <c>null</c>-terminated string that specifies a file name. This file should be a document.</para>
		/// </param>
		/// <param name="lpDirectory">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>The address of a <c>null</c>-terminated string that specifies the default directory. This value can be <c>NULL</c>.</para>
		/// </param>
		/// <param name="lpResult">
		/// <para>Type: <c>LPTSTR</c></para>
		/// <para>
		/// The address of a buffer that receives the file name of the associated executable file. This file name is a <c>null</c>-terminated
		/// string that specifies the executable file started when an "open" by association is run on the file specified in the parameter.
		/// Put simply, this is the application that is launched when the document file is directly double-clicked or when <c>Open</c> is
		/// chosen from the file's shortcut menu. This parameter must contain a valid non- <c>null</c> value and is assumed to be of length
		/// MAX_PATH. Responsibility for validating the value is left to the programmer.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HINSTANCE</c></para>
		/// <para>Returns a value greater than 32 if successful, or a value less than or equal to 32 representing an error.</para>
		/// <para>The following table lists possible error values.</para>
		/// <list type="table">
		/// <listheader>
		/// <term>Return code/value</term>
		/// <term>Description</term>
		/// </listheader>
		/// <item>
		/// <term>SE_ERR_FNF 2</term>
		/// <term>The specified file was not found.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_PNF 3</term>
		/// <term>The specified path is invalid.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_ACCESSDENIED 5</term>
		/// <term>The specified file cannot be accessed.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_OOM 8</term>
		/// <term>The system is out of memory or resources.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_NOASSOC 31</term>
		/// <term>There is no association for the specified file type with an executable file.</term>
		/// </item>
		/// </list>
		/// </returns>
		/// <remarks>
		/// <para>Use <c>FindExecutable</c> for documents. If you want to retrieve the path of an executable file, use the following:</para>
		/// <para>
		/// Here, pszExecutableName is a pointer to a null-terminated string that specifies the name of the executable file, pszPath is a
		/// pointer to the null-terminated string buffer that receives the path to the executable file, and pcchOut is a pointer to a DWORD
		/// that specifies the number of characters in the pszPath buffer. When the function returns, pcchOut is set to the number of
		/// characters actually placed in the buffer. See AssocQueryString for more information.
		/// </para>
		/// <para>
		/// When <c>FindExecutable</c> returns, the parameter may contain the path to the Dynamic Data Exchange (DDE) server started if a
		/// server does not respond to a request to initiate a DDE conversation with the DDE client application.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-findexecutablea HINSTANCE FindExecutableA( LPCSTR
		// lpFile, LPCSTR lpDirectory, LPSTR lpResult );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "969edbd9-164e-457f-ab0a-dc4d069bf16b")]
		public static extern IntPtr FindExecutable(string lpFile, string lpDirectory, StringBuilder lpResult);

		/// <summary>
		/// <para>Initializes the network address control window class.</para>
		/// </summary>
		/// <returns>
		/// <para>Type: <c>BOOL</c></para>
		/// <para><c>TRUE</c> if the initialization succeeded; or <c>FALSE</c> otherwise.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// The network address control looks like an edit control and offers the additional functionality of network address verification.
		/// The control uses a balloon tip to display error messages.
		/// </para>
		/// <para>This function initializes class WC_NETADDRESS. If this function returns <c>TRUE</c>, the control can be created.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-initnetworkaddresscontrol BOOL
		// InitNetworkAddressControl( );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "52b475e3-7335-4c34-80d7-ccd81af0e0ec")]
		[return: MarshalAs(UnmanagedType.Bool)]
		public static extern bool InitNetworkAddressControl();

		/// <summary>
		/// <para>Adds default properties to the property store as registered for the specified file extension.</para>
		/// </summary>
		/// <param name="pszExt">
		/// <para>Type: <c>PCWSTR</c></para>
		/// <para>A pointer to a null-terminated, Unicode string that specifies the extension.</para>
		/// </param>
		/// <param name="pPropStore">
		/// <para>Type: <c>IPropertyStore*</c></para>
		/// <para>A pointer to the IPropertyStore interface that defines the default properties to add.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// The list of properties used to set a default value comes from the registry value of the ProgID for the file association of the
		/// specified file extension. The list is prefixed by "" and contains the canonical names of the properties to set the default value,
		/// such as: "". The possible properties for this list are <c>System.Author</c>, <c>System.Document.DateCreated</c>, and
		/// <c>System.Photo.DateTaken</c>. If the value does not exist on the ProgID, this function uses the default found on the value of <c>HKEY_CLASSES_ROOT*</c>.
		/// </para>
		/// <para>
		/// <c>System.Author</c> has the value of the user that performed the action. <c>System.Document.DateCreated</c> and
		/// <c>System.Photo.DateTaken</c> use the current date. These three properties are the only ones for which the system provides
		/// special defaults.
		/// </para>
		/// <para>Note that there are several types of properties:</para>
		/// <list type="number">
		/// <item>Properties that derive from the file system (such as, size and date created)</item>
		/// <item>Properties that derive from the file (such as, dimensions and number of pages)</item>
		/// <item>Properties that are placed in the file (such as, author and tags)</item>
		/// </list>
		/// <para>
		/// When creating a new file, types one and two are provided just by creating the file. But properties of type three must be set
		/// explicitly by a program. The system provides
		/// </para>
		/// <para>SHAddDefaultPropertiesByExt</para>
		/// <para>
		/// to provide values for up to three specific properties of type three. Sometimes Windows Explorer uses this API when saving a file
		/// for the first time, or when creating a new file after the menu choice
		/// </para>
		/// <para>New</para>
		/// <para>is selected from a shortcut menu.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shobjidl/nf-shobjidl-shadddefaultpropertiesbyext SHSTDAPI
		// SHAddDefaultPropertiesByExt( PCWSTR pszExt, IPropertyStore *pPropStore );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shobjidl.h", MSDNShortId = "ba0fec36-3983-4064-9202-6158af565d9b")]
		public static extern HRESULT SHAddDefaultPropertiesByExt([MarshalAs(UnmanagedType.LPWStr)] string pszExt, IPropertyStore pPropStore);

		/// <summary>
		/// <para>
		/// [This function is available through Windows XP Service Pack 2 (SP2) and Windows Server 2003. It might be altered or unavailable
		/// in subsequent versions of Windows.]
		/// </para>
		/// <para>Adds pages to a property sheet extension array created by SHCreatePropSheetExtArray.</para>
		/// </summary>
		/// <param name="hpsxa">
		/// <para>Type: <c>HPSXA</c></para>
		/// <para>The array of property sheet handlers returned by SHCreatePropSheetExtArray.</para>
		/// </param>
		/// <param name="lpfnAddPage">
		/// <para>Type: <c>LPFNADDPROPSHEETPAGE</c></para>
		/// <para>
		/// A pointer to an AddPropSheetPageProc callback function. It is called once for each property sheet handler. The callback function
		/// then returns the information needed to add a page to the handler's property sheet.
		/// </para>
		/// </param>
		/// <param name="lParam">
		/// <para>Type: <c>LPARAM</c></para>
		/// <para>A pointer to application-defined data. This data is passed to the callback function specified by .</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>UINT</c></para>
		/// <para>Returns the number of pages actually added.</para>
		/// </returns>
		/// <remarks>
		/// <para>This function should be called only once for the property sheet extension array named in .</para>
		/// <para>This function calls each extension's IShellPropSheetExt::AddPages method. See that page for further details.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shlobj_core/nf-shlobj_core-shaddfrompropsheetextarray WINSHELLAPI UINT
		// SHAddFromPropSheetExtArray( HPSXA hpsxa, LPFNADDPROPSHEETPAGE lpfnAddPage, LPARAM lParam );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shlobj_core.h", MSDNShortId = "e0570cd6-dda2-43e4-8540-58baef37bf18")]
		public static extern uint SHAddFromPropSheetExtArray(IntPtr hpsxa, AddPropSheetPageProc lpfnAddPage, IntPtr lParam);

		/// <summary>
		/// <para>
		/// [This function is available through Windows XP Service Pack 2 (SP2) and Windows Server 2003. It might be altered or unavailable
		/// in subsequent versions of Windows. Use CoTaskMemAlloc instead.]
		/// </para>
		/// <para>Allocates memory from the Shell's heap.</para>
		/// </summary>
		/// <param name="cb">
		/// <para>Type: <c>SIZE_T</c></para>
		/// <para>The number of bytes of memory to allocate.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>LPVOID</c></para>
		/// <para>A pointer to the allocated memory.</para>
		/// </returns>
		/// <remarks>
		/// <para>You can free this memory by calling SHFree.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shlobj_core/nf-shlobj_core-shalloc
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shlobj_core.h", MSDNShortId = "621e4335-1484-4111-9cfe-7ae5c6d5c609")]
		public static extern IntPtr SHAlloc(SizeT cb);

		/// <summary>
		/// <para>Sends an appbar message to the system.</para>
		/// </summary>
		/// <param name="dwMessage">
		/// <para>Type: <c>DWORD</c></para>
		/// <para>Appbar message value to send. This parameter can be one of the following values.</para>
		/// <para>ABM_NEW (0x00000000)</para>
		/// <para>
		/// Registers a new appbar and specifies the message identifier that the system should use to send notification messages to the appbar.
		/// </para>
		/// <para>ABM_REMOVE (0x00000001)</para>
		/// <para>Unregisters an appbar, removing the bar from the system's internal list.</para>
		/// <para>ABM_QUERYPOS (0x00000002)</para>
		/// <para>Requests a size and screen position for an appbar.</para>
		/// <para>ABM_SETPOS (0x00000003)</para>
		/// <para>Sets the size and screen position of an appbar.</para>
		/// <para>ABM_GETSTATE (0x00000004)</para>
		/// <para>Retrieves the autohide and always-on-top states of the Windows taskbar.</para>
		/// <para>ABM_GETTASKBARPOS (0x00000005)</para>
		/// <para>
		/// Retrieves the bounding rectangle of the Windows taskbar. Note that this applies only to the system taskbar. Other objects,
		/// particularly toolbars supplied with third-party software, also can be present. As a result, some of the screen area not covered
		/// by the Windows taskbar might not be visible to the user. To retrieve the area of the screen not covered by both the taskbar and
		/// other app bars<72>the working area available to your application<6F>, use the GetMonitorInfo function.
		/// </para>
		/// <para>ABM_ACTIVATE (0x00000006)</para>
		/// <para>
		/// Notifies the system to activate or deactivate an appbar. The <c>lParam</c> member of the APPBARDATA pointed to by is set to
		/// <c>TRUE</c> to activate or <c>FALSE</c> to deactivate.
		/// </para>
		/// <para>ABM_GETAUTOHIDEBAR (0x00000007)</para>
		/// <para>Retrieves the handle to the autohide appbar associated with a particular edge of the screen.</para>
		/// <para>ABM_SETAUTOHIDEBAR (0x00000008)</para>
		/// <para>Registers or unregisters an autohide appbar for an edge of the screen.</para>
		/// <para>ABM_WINDOWPOSCHANGED (0x00000009)</para>
		/// <para>Notifies the system when an appbar's position has changed.</para>
		/// <para>ABM_SETSTATE (0x0000000A)</para>
		/// <para><c>Windows XP and later:</c> Sets the state of the appbar's autohide and always-on-top attributes.</para>
		/// <para>ABM_GETAUTOHIDEBAREX (0x0000000B)</para>
		/// <para>
		/// <c>Windows XP and later:</c> Retrieves the handle to the autohide appbar associated with a particular edge of a particular monitor.
		/// </para>
		/// <para>ABM_SETAUTOHIDEBAREX (0x0000000C)</para>
		/// <para><c>Windows XP and later:</c> Registers or unregisters an autohide appbar for an edge of a particular monitor.</para>
		/// </param>
		/// <param name="pData">
		/// <para>Type: <c>PAPPBARDATA</c></para>
		/// <para>
		/// A pointer to an APPBARDATA structure. The content of the structure on entry and on exit depends on the value set in the
		/// parameter. See the individual message pages for specifics.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>UINT_PTR</c></para>
		/// <para>
		/// This function returns a message-dependent value. For more information, see the Windows SDK documentation for the specific appbar
		/// message sent. Links to those documents are given in the See Also section.
		/// </para>
		/// </returns>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shappbarmessage UINT_PTR SHAppBarMessage( DWORD
		// dwMessage, PAPPBARDATA pData );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "173d6eff-b33b-4d7d-bedd-5ebfb1e45954")]
		public static extern UIntPtr SHAppBarMessage(ABM dwMessage, ref APPBARDATA pData);

		/// <summary>
		/// <para>Sends a message to the taskbar's status area.</para>
		/// </summary>
		/// <param name="dwMessage">
		/// <para>Type: <c>DWORD</c></para>
		/// <para>A value that specifies the action to be taken by this function. It can have one of the following values:</para>
		/// <para>NIM_ADD (0x00000000)</para>
		/// <para>
		/// 0x00000000. Adds an icon to the status area. The icon is given an identifier in the NOTIFYICONDATA structure pointed to by
		/// lpdata<74>either through its <c>uID</c> or <c>guidItem</c> member. This identifier is used in subsequent calls to
		/// <c>Shell_NotifyIcon</c> to perform later actions on the icon.
		/// </para>
		/// <para>NIM_MODIFY (0x00000001)</para>
		/// <para>
		/// 0x00000001. Modifies an icon in the status area. NOTIFYICONDATA structure pointed to by lpdata uses the ID originally assigned to
		/// the icon when it was added to the notification area (NIM_ADD) to identify the icon to be modified.
		/// </para>
		/// <para>NIM_DELETE (0x00000002)</para>
		/// <para>
		/// 0x00000002. Deletes an icon from the status area. NOTIFYICONDATA structure pointed to by lpdata uses the ID originally assigned
		/// to the icon when it was added to the notification area (NIM_ADD) to identify the icon to be deleted.
		/// </para>
		/// <para>NIM_SETFOCUS (0x00000003)</para>
		/// <para>
		/// 0x00000003. Shell32.dll version 5.0 and later only. Returns focus to the taskbar notification area. Notification area icons
		/// should use this message when they have completed their UI operation. For example, if the icon displays a shortcut menu, but the
		/// user presses ESC to cancel it, use <c>NIM_SETFOCUS</c> to return focus to the notification area.
		/// </para>
		/// <para>NIM_SETVERSION (0x00000004)</para>
		/// <para>
		/// 0x00000004. Shell32.dll version 5.0 and later only. Instructs the notification area to behave according to the version number
		/// specified in the <c>uVersion</c> member of the structure pointed to by lpdata. The version number specifies which members are recognized.
		/// </para>
		/// <para>
		/// NIM_SETVERSION must be called every time a notification area icon is added (NIM_ADD)&gt;. It does not need to be called with
		/// NIM_MOFIDY. The version setting is not persisted once a user logs off.
		/// </para>
		/// <para>For details, see the Remarks section.</para>
		/// </param>
		/// <param name="lpData">
		/// <para>Type: <c>PNOTIFYICONDATA</c></para>
		/// <para>
		/// A pointer to a NOTIFYICONDATA structure. The content of the structure depends on the value of dwMessage. It can define an icon to
		/// add to the notification area, cause that icon to display a notification, or identify an icon to modify or delete.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>BOOL</c></para>
		/// <para>
		/// Returns <c>TRUE</c> if successful, or <c>FALSE</c> otherwise. If dwMessage is set to NIM_SETVERSION, the function returns
		/// <c>TRUE</c> if the version was successfully changed, or <c>FALSE</c> if the requested version is not supported.
		/// </para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// As of Windows 2000 (Shell32.dll version 5.0), if you set the <c>uVersion</c> member of the NOTIFYICONDATA structure pointed to by
		/// lpdata to NOTIFYICON_VERSION_4 or higher, <c>Shell_NotifyIcon</c> mouse and keyboard events are handled differently than in
		/// earlier versions of Windows. The differences include the following:
		/// </para>
		/// <list type="bullet">
		/// <item>
		/// <term>
		/// If a user selects a notify icon's shortcut menu with the keyboard, the Shell now sends the associated application a
		/// WM_CONTEXTMENU message. Earlier versions send WM_RBUTTONDOWN and WM_RBUTTONUP messages.
		/// </term>
		/// </item>
		/// <item>
		/// <term>
		/// If a user selects a notify icon with the keyboard and activates it with the SPACEBAR or ENTER key, the version 5.0 Shell sends
		/// the associated application an NIN_KEYSELECT notification. Earlier versions send WM_RBUTTONDOWN and WM_RBUTTONUP messages.
		/// </term>
		/// </item>
		/// <item>
		/// <term>
		/// If a user selects a notify icon with the mouse and activates it with the ENTER key, the Shell now sends the associated
		/// application an NIN_SELECT notification. Earlier versions send WM_RBUTTONDOWN and WM_RBUTTONUP messages.
		/// </term>
		/// </item>
		/// </list>
		/// <para>
		/// As of Windows XP (Shell32.dll version 6.0), if a user passes the mouse pointer over an icon with which a balloon notification is
		/// associated, the Shell sends the following messages:
		/// </para>
		/// <list type="bullet">
		/// <item>
		/// <term>NIN_BALLOONSHOW. Sent when the balloon is shown (balloons are queued).</term>
		/// </item>
		/// <item>
		/// <term>
		/// NIN_BALLOONHIDE. Sent when the balloon disappears. For example, when the icon is deleted. This message is not sent if the balloon
		/// is dismissed because of a timeout or if the user clicks the mouse.
		/// </term>
		/// </item>
		/// <item>
		/// <term>NIN_BALLOONTIMEOUT. Sent when the balloon is dismissed because of a timeout.</term>
		/// </item>
		/// <item>
		/// <term>NIN_BALLOONUSERCLICK. Sent when the balloon is dismissed because the user clicked the mouse.</term>
		/// </item>
		/// </list>
		/// <para>
		/// In addition to those messages, as of Windows Vista (Shell32.dll version 6.0.6), if a user passes the mouse pointer over an icon
		/// with which a balloon notification is associated, the Windows Vista Shell also adds the following messages:
		/// </para>
		/// <list type="bullet">
		/// <item>
		/// <term>
		/// NIN_POPUPOPEN. Sent when the user hovers the cursor over an icon to indicate that the richer pop-up UI should be used in place of
		/// a standard textual tooltip.
		/// </term>
		/// </item>
		/// <item>
		/// <term>NIN_POPUPCLOSE. Sent when a cursor no longer hovers over an icon to indicate that the rich pop-up UI should be closed.</term>
		/// </item>
		/// </list>
		/// <para>
		/// Regardless of the operating system version, you can select which way the Shell should behave by calling <c>Shell_NotifyIcon</c>
		/// with dwMessage set to <c>NIM_SETVERSION</c>. Set the <c>uVersion</c> member of the NOTIFYICONDATA structure pointed to by lpdata
		/// to indicate whether you want Windows 2000, Windows Vista, or pre-version 5.0 (Windows 95) behavior.
		/// </para>
		/// <para>
		/// <c>Note</c> The messages discussed above are not conventional Windows messages. They are sent as the lParam value of the
		/// application-defined message that is specified in the <c>uCallbackMessage</c> member of the NOTIFYICONDATA structure pointed to by
		/// lpdata, when <c>Shell_NotifyIcon</c> is called with the <c>NIM_ADD</c> flag set in dwMessage.
		/// </para>
		/// <para>
		/// As of Windows XP Service Pack 2 (SP2), a custom icon can be displayed in the notification balloon. This allows the calling
		/// process to customize the notification beyond the previously available options of info, warning, and error, and distinguish it
		/// from other types of notification for the user.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shell_notifyicona BOOL Shell_NotifyIconA( DWORD
		// dwMessage, PNOTIFYICONDATAA lpData );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "a316bc29-5f19-4a04-a32b-f4caeea0c029")]
		[return: MarshalAs(UnmanagedType.Bool)]
		public static extern bool Shell_NotifyIcon(NIM dwMessage, in NOTIFYICONDATA lpData);

		/// <summary>
		/// <para>Gets the screen coordinates of the bounding rectangle of a notification icon.</para>
		/// </summary>
		/// <param name="identifier">
		/// <para>Type: <c>const NOTIFYICONIDENTIFIER*</c></para>
		/// <para>Pointer to a NOTIFYICONIDENTIFIER structure that identifies the icon.</para>
		/// </param>
		/// <param name="iconLocation">
		/// <para>Type: <c>RECT*</c></para>
		/// <para>Pointer to a RECT structure that, when this function returns successfully, receives the coordinates of the icon.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shell_notifyicongetrect SHSTDAPI
		// Shell_NotifyIconGetRect( const NOTIFYICONIDENTIFIER *identifier, RECT *iconLocation );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "81ad13be-a908-4079-b47c-6f983919700b")]
		public static extern HRESULT Shell_NotifyIconGetRect(in NOTIFYICONIDENTIFIER identifier, out RECT iconLocation);

		/// <summary>
		/// <para>Displays a <c>ShellAbout</c> dialog box.</para>
		/// </summary>
		/// <param name="hWnd">
		/// <para>Type: <c>HWND</c></para>
		/// <para>A window handle to a parent window. This parameter can be <c>NULL</c>.</para>
		/// </param>
		/// <param name="szApp">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A pointer to a null-terminated string that contains text to be displayed in the title bar of the <c>ShellAbout</c> dialog box and
		/// on the first line of the dialog box after the text "Microsoft". If the text contains a separator (#) that divides it into two
		/// parts, the function displays the first part in the title bar and the second part on the first line after the text "Microsoft".
		/// </para>
		/// <para>
		/// <c>Windows 2000, Windows XP, Windows Server 2003</c>: If the string pointed to by this parameter contains a separator (#), then
		/// the string must be writeable.
		/// </para>
		/// <para><c>Windows Vista, Windows Server 2008</c>: This string cannot exceed 200 characters in length.</para>
		/// </param>
		/// <param name="szOtherStuff">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A pointer to a null-terminated string that contains text to be displayed in the dialog box after the version and copyright
		/// information. This parameter can be <c>NULL</c>.
		/// </para>
		/// </param>
		/// <param name="hIcon">
		/// <para>Type: <c>HICON</c></para>
		/// <para>
		/// The handle of an icon that the function displays in the dialog box. This parameter can be <c>NULL</c>, in which case the function
		/// displays the Windows icon.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>int</c></para>
		/// <para><c>TRUE</c> if successful; otherwise, <c>FALSE</c>.</para>
		/// </returns>
		/// <remarks>
		/// <para>Note that the <c>ShellAbout</c> function dialog box uses text and a default icon that are specific to Windows.</para>
		/// <para>
		/// To see an example of a <c>ShellAbout</c> dialog box, choose <c>About Windows</c> from the <c>Help</c> menu drop-down list in
		/// Windows Explorer.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shellabouta INT ShellAboutA( HWND hWnd, LPCSTR szApp,
		// LPCSTR szOtherStuff, HICON hIcon );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "0919e356-84e8-475e-8628-23097b19c50d")]
		[return: MarshalAs(UnmanagedType.Bool)]
		public static extern bool ShellAbout(HWND hWnd, string szApp, string szOtherStuff, HICON hIcon);

		/// <summary>
		/// <para>Performs an operation on a specified file.</para>
		/// </summary>
		/// <param name="hwnd">
		/// <para>Type: <c>HWND</c></para>
		/// <para>
		/// A handle to the parent window used for displaying a UI or error messages. This value can be <c>NULL</c> if the operation is not
		/// associated with a window.
		/// </para>
		/// </param>
		/// <param name="lpOperation">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A pointer to a <c>null</c>-terminated string, referred to in this case as a , that specifies the action to be performed. The set
		/// of available verbs depends on the particular file or folder. Generally, the actions available from an object's shortcut menu are
		/// available verbs. The following verbs are commonly used:
		/// </para>
		/// <para>edit</para>
		/// <para>Launches an editor and opens the document for editing. If is not a document file, the function will fail.</para>
		/// <para>explore</para>
		/// <para>Explores a folder specified by .</para>
		/// <para>find</para>
		/// <para>Initiates a search beginning in the directory specified by .</para>
		/// <para>open</para>
		/// <para>Opens the item specified by the parameter. The item can be a file or folder.</para>
		/// <para>print</para>
		/// <para>Prints the file specified by . If is not a document file, the function fails.</para>
		/// <para>NULL</para>
		/// <para>
		/// The default verb is used, if available. If not, the "open" verb is used. If neither verb is available, the system uses the first
		/// verb listed in the registry.
		/// </para>
		/// </param>
		/// <param name="lpFile">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A pointer to a <c>null</c>-terminated string that specifies the file or object on which to execute the specified verb. To specify
		/// a Shell namespace object, pass the fully qualified parse name. Note that not all verbs are supported on all objects. For example,
		/// not all document types support the "print" verb. If a relative path is used for the parameter do not use a relative path for .
		/// </para>
		/// </param>
		/// <param name="lpParameters">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// If specifies an executable file, this parameter is a pointer to a <c>null</c>-terminated string that specifies the parameters to
		/// be passed to the application. The format of this string is determined by the verb that is to be invoked. If specifies a document
		/// file, should be <c>NULL</c>.
		/// </para>
		/// </param>
		/// <param name="lpDirectory">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A pointer to a <c>null</c>-terminated string that specifies the default (working) directory for the action. If this value is
		/// <c>NULL</c>, the current working directory is used. If a relative path is provided at , do not use a relative path for .
		/// </para>
		/// </param>
		/// <param name="nShowCmd">
		/// <para>Type: <c>INT</c></para>
		/// <para>
		/// The flags that specify how an application is to be displayed when it is opened. If specifies a document file, the flag is simply
		/// passed to the associated application. It is up to the application to decide how to handle it. These values are defined in Winuser.h.
		/// </para>
		/// <para>SW_HIDE (0)</para>
		/// <para>Hides the window and activates another window.</para>
		/// <para>SW_MAXIMIZE (3)</para>
		/// <para>Maximizes the specified window.</para>
		/// <para>SW_MINIMIZE (6)</para>
		/// <para>Minimizes the specified window and activates the next top-level window in the z-order.</para>
		/// <para>SW_RESTORE (9)</para>
		/// <para>
		/// Activates and displays the window. If the window is minimized or maximized, Windows restores it to its original size and
		/// position. An application should specify this flag when restoring a minimized window.
		/// </para>
		/// <para>SW_SHOW (5)</para>
		/// <para>Activates the window and displays it in its current size and position.</para>
		/// <para>SW_SHOWDEFAULT (10)</para>
		/// <para>
		/// Sets the show state based on the SW_ flag specified in the STARTUPINFO structure passed to the CreateProcess function by the
		/// program that started the application. An application should call ShowWindow with this flag to set the initial show state of its
		/// main window.
		/// </para>
		/// <para>SW_SHOWMAXIMIZED (3)</para>
		/// <para>Activates the window and displays it as a maximized window.</para>
		/// <para>SW_SHOWMINIMIZED (2)</para>
		/// <para>Activates the window and displays it as a minimized window.</para>
		/// <para>SW_SHOWMINNOACTIVE (7)</para>
		/// <para>Displays the window as a minimized window. The active window remains active.</para>
		/// <para>SW_SHOWNA (8)</para>
		/// <para>Displays the window in its current state. The active window remains active.</para>
		/// <para>SW_SHOWNOACTIVATE (4)</para>
		/// <para>Displays a window in its most recent size and position. The active window remains active.</para>
		/// <para>SW_SHOWNORMAL (1)</para>
		/// <para>
		/// Activates and displays a window. If the window is minimized or maximized, Windows restores it to its original size and position.
		/// An application should specify this flag when displaying the window for the first time.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HINSTANCE</c></para>
		/// <para>
		/// If the function succeeds, it returns a value greater than 32. If the function fails, it returns an error value that indicates the
		/// cause of the failure. The return value is cast as an HINSTANCE for backward compatibility with 16-bit Windows applications. It is
		/// not a true HINSTANCE, however. It can be cast only to an <c>int</c> and compared to either 32 or the following error codes below.
		/// </para>
		/// <list type="table">
		/// <listheader>
		/// <term>Return code</term>
		/// <term>Description</term>
		/// </listheader>
		/// <item>
		/// <term>0</term>
		/// <term>The operating system is out of memory or resources.</term>
		/// </item>
		/// <item>
		/// <term>ERROR_FILE_NOT_FOUND</term>
		/// <term>The specified file was not found.</term>
		/// </item>
		/// <item>
		/// <term>ERROR_PATH_NOT_FOUND</term>
		/// <term>The specified path was not found.</term>
		/// </item>
		/// <item>
		/// <term>ERROR_BAD_FORMAT</term>
		/// <term>The .exe file is invalid (non-Win32 .exe or error in .exe image).</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_ACCESSDENIED</term>
		/// <term>The operating system denied access to the specified file.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_ASSOCINCOMPLETE</term>
		/// <term>The file name association is incomplete or invalid.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_DDEBUSY</term>
		/// <term>The DDE transaction could not be completed because other DDE transactions were being processed.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_DDEFAIL</term>
		/// <term>The DDE transaction failed.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_DDETIMEOUT</term>
		/// <term>The DDE transaction could not be completed because the request timed out.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_DLLNOTFOUND</term>
		/// <term>The specified DLL was not found.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_FNF</term>
		/// <term>The specified file was not found.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_NOASSOC</term>
		/// <term>
		/// There is no application associated with the given file name extension. This error will also be returned if you attempt to print a
		/// file that is not printable.
		/// </term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_OOM</term>
		/// <term>There was not enough memory to complete the operation.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_PNF</term>
		/// <term>The specified path was not found.</term>
		/// </item>
		/// <item>
		/// <term>SE_ERR_SHARE</term>
		/// <term>A sharing violation occurred.</term>
		/// </item>
		/// </list>
		/// </returns>
		/// <remarks>
		/// <para>
		/// Because <c>ShellExecute</c> can delegate execution to Shell extensions (data sources, context menu handlers, verb
		/// implementations) that are activated using Component Object Model (COM), COM should be initialized before <c>ShellExecute</c> is
		/// called. Some Shell extensions require the COM single-threaded apartment (STA) type. In that case, COM should be initialized as
		/// shown here:
		/// </para>
		/// <para>This method allows you to execute any commands in a folder's shortcut menu or stored in the registry.</para>
		/// <para>To open a folder, use either of the following calls:</para>
		/// <para>or</para>
		/// <para>To explore a folder, use the following call:</para>
		/// <para>To launch the Shell's Find utility for a directory, use the following call.</para>
		/// <para>If</para>
		/// <para>lpOperation</para>
		/// <para>is</para>
		/// <para>NULL</para>
		/// <para>, the function opens the file specified by</para>
		/// <para>lpFile</para>
		/// <para>. If</para>
		/// <para>lpOperation</para>
		/// <para>is "open" or "explore", the function attempts to open or explore the folder.</para>
		/// <para>To obtain information about the application that is launched as a result of calling <c>ShellExecute</c>, use ShellExecuteEx.</para>
		/// <para>
		/// <c>Note</c> The <c>Launch folder windows in a separate process</c> setting in Folder Options affects <c>ShellExecute</c>. If that
		/// option is disabled (the default setting), <c>ShellExecute</c> uses an open Explorer window rather than launch a new one. If no
		/// Explorer window is open, <c>ShellExecute</c> launches a new one.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shellexecutea HINSTANCE ShellExecuteA( HWND hwnd, LPCSTR
		// lpOperation, LPCSTR lpFile, LPCSTR lpParameters, LPCSTR lpDirectory, INT nShowCmd );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "8b1f3978-a0ee-4684-8a37-98e270b63897")]
		public static extern IntPtr ShellExecute(HWND hwnd, string lpOperation, string lpFile, string lpParameters, string lpDirectory, ShowWindowCommand nShowCmd);

		/// <summary>Performs an operation on a specified file.</summary>
		/// <param name="lpExecInfo">
		/// A pointer to a SHELLEXECUTEINFO structure that contains and receives information about the application being executed.
		/// </param>
		/// <returns>Returns TRUE if successful; otherwise, FALSE. Call GetLastError for extended error information.</returns>
		[DllImport(Lib.Shell32, CharSet = CharSet.Auto, SetLastError = true)]
		[return: MarshalAs(UnmanagedType.Bool)]
		[PInvokeData("Shellapi.h", MSDNShortId = "bb762154")]
		public static extern bool ShellExecuteEx(ref SHELLEXECUTEINFO lpExecInfo);

		/// <summary>
		/// <para>Empties the Recycle Bin on the specified drive.</para>
		/// </summary>
		/// <param name="hwnd">
		/// <para>Type: <c>HWND</c></para>
		/// <para>
		/// A handle to the parent window of any dialog boxes that might be displayed during the operation. This parameter can be <c>NULL</c>.
		/// </para>
		/// </param>
		/// <param name="pszRootPath">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// The address of a null-terminated string of maximum length MAX_PATH that contains the path of the root drive on which the Recycle
		/// Bin is located. This parameter can contain the address of a string formatted with the drive, folder, and subfolder names, for
		/// example c:\windows\system. It can also contain an empty string or <c>NULL</c>. If this value is an empty string or <c>NULL</c>,
		/// all Recycle Bins on all drives will be emptied.
		/// </para>
		/// </param>
		/// <param name="dwFlags">
		/// <para>Type: <c>DWORD</c></para>
		/// <para>One or more of the following values.</para>
		/// <para>SHERB_NOCONFIRMATION</para>
		/// <para>No dialog box confirming the deletion of the objects will be displayed.</para>
		/// <para>SHERB_NOPROGRESSUI</para>
		/// <para>No dialog box indicating the progress will be displayed.</para>
		/// <para>SHERB_NOSOUND</para>
		/// <para>No sound will be played when the operation is complete.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shemptyrecyclebina SHSTDAPI SHEmptyRecycleBinA( HWND
		// hwnd, LPCSTR pszRootPath, DWORD dwFlags );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "c3995be7-bc8b-4e1f-8ef6-fdf4c0a75720")]
		public static extern HRESULT SHEmptyRecycleBin(HWND hwnd, string pszRootPath, SHERB dwFlags);

		/// <summary>
		/// <para>Enumerates the user accounts that have unread email.</para>
		/// </summary>
		/// <param name="hKeyUser">
		/// <para>Type: <c>HKEY</c></para>
		/// <para>A valid HKEY for a given user.</para>
		/// </param>
		/// <param name="dwIndex">
		/// <para>Type: <c>DWORD</c></para>
		/// <para>The index of the user account.</para>
		/// </param>
		/// <param name="pszMailAddress">
		/// <para>Type: <c>LPTSTR</c></para>
		/// <para>A pointer to a Unicode string that specifies the email address of an account belonging to the specified user.</para>
		/// </param>
		/// <param name="cchMailAddress">
		/// <para>Type: <c>int</c></para>
		/// <para>The number of characters in the email address.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// The parameter is the HKEY for the root of the user's information, for example <c>HKEY_CURRENT_USER</c>, or any key enumerated
		/// under <c>HKEY_USERS</c>.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shenumerateunreadmailaccountsw HRESULT
		// SHEnumerateUnreadMailAccountsW( HKEY hKeyUser, DWORD dwIndex, LPWSTR pszMailAddress, int cchMailAddress );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "67ec8355-f902-4b71-972f-94e403701f96")]
		public static extern HRESULT SHEnumerateUnreadMailAccounts(HKEY hKeyUser, uint dwIndex, StringBuilder pszMailAddress, int cchMailAddress);

		/// <summary>
		/// <para>Enforces strict validation of parameters used in a call to CreateProcess or ShellExecute.</para>
		/// </summary>
		/// <param name="pszCmdTemplate">
		/// <para>Type: <c>PCWSTR</c></para>
		/// <para>
		/// A command line, which may or may not include parameters. If the parameters are substitution parameters, then
		/// <c>SHEvaluateSystemCommandTemplate</c> should be called before parameters have been replaced.
		/// </para>
		/// </param>
		/// <param name="ppszApplication">
		/// <para>Type: <c>PWSTR*</c></para>
		/// <para>
		/// A pointer to the verified path to the application. This value should be passed as the parameter in a call to CreateProcess or as
		/// the parameter in a call to ShellExecute. This resource is allocated using CoTaskMemAlloc, and it is the responsibility of the
		/// caller to free the resource when it is no longer needed by calling CoTaskMemFree.
		/// </para>
		/// </param>
		/// <param name="ppszCommandLine">
		/// <para>Type: <c>PWSTR*</c></para>
		/// <para>
		/// A pointer to a command-line string template to be used in a call to CreateProcess. Command-line parameters should be specified
		/// based on this template, and then passed as the parameter to <c>CreateProcess</c>. It is guaranteed to be of a form that
		/// PathGetArgs can always read correctly. This resource is allocated using CoTaskMemAlloc, and it is the responsibility of the
		/// caller to free the resource when it is no longer needed by calling CoTaskMemFree.
		/// </para>
		/// <para>This parameter can be <c>NULL</c> if this function is not being used in association with a call to CreateProcess.</para>
		/// </param>
		/// <param name="ppszParameters">
		/// <para>Type: <c>PWSTR*</c></para>
		/// <para>
		/// A pointer to a command-line string template to be used in a call to ShellExecute. Command-line parameters should be specified
		/// based on this template, and then passed as the parameter to <c>ShellExecute</c>. This parameter is identical to calling
		/// PathGetArgs. This resource is allocated using CoTaskMemAlloc, and it is the responsibility of the caller to free the resource
		/// when it is no longer needed by calling CoTaskMemFree.
		/// </para>
		/// <para>This parameter can be <c>NULL</c> if this function is not being used in association with a call to CreateProcess.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// This function is used when a calling process needs the deterministic behavior from a command template, regardless of execution
		/// context. It ignores the current process state, such as the , GetCurrentDirectory, and parent process directory.
		/// </para>
		/// <para>This function is used when the command is hard-coded.</para>
		/// <para>
		/// This function is used by ShellExecute when handling file associations from HKEY_CLASSES_ROOT. The purpose of this function is to
		/// reduce CreateProcess command-line exploits. It is not designed for processing user input and if used for that purpose can
		/// generate unexpected failures.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shevaluatesystemcommandtemplate SHSTDAPI
		// SHEvaluateSystemCommandTemplate( PCWSTR pszCmdTemplate, PWSTR *ppszApplication, PWSTR *ppszCommandLine, PWSTR *ppszParameters );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true, CharSet = CharSet.Unicode)]
		[PInvokeData("shellapi.h", MSDNShortId = "554b941d-7d03-47ae-a23a-2c47c5ca1044")]
		public static extern HRESULT SHEvaluateSystemCommandTemplate(string pszCmdTemplate,
			[MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(CoTaskMemStringMarshaler))] out string ppszApplication,
			[MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(CoTaskMemStringMarshaler))] out string ppszCommandLine,
			[MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(CoTaskMemStringMarshaler))] out string ppszParameters);

		/// <summary>
		/// Copies, moves, renames, or deletes a file system object. This function has been replaced in Windows Vista by <see cref="IFileOperation"/>.
		/// </summary>
		/// <param name="lpFileOp">
		/// A pointer to an SHFILEOPSTRUCT structure that contains information this function needs to carry out the specified operation. This
		/// parameter must contain a valid value that is not NULL. You are responsible for validating the value. If you do not validate it,
		/// you will experience unexpected results.
		/// </param>
		/// <returns>Returns zero if successful; otherwise nonzero. Applications normally should simply check for zero or nonzero.</returns>
		[PInvokeData("Shellapi.h")]
		[DllImport("shell32.dll", CharSet = CharSet.Auto)]
		public static extern int SHFileOperation(ref SHFILEOPSTRUCT lpFileOp);

		/// <summary>
		/// <para>Frees a file name mapping object that was retrieved by the SHFileOperation function.</para>
		/// </summary>
		/// <param name="hNameMappings">
		/// <para>Type: <c>HANDLE</c></para>
		/// <para>A handle to the file name mapping object to be freed.</para>
		/// </param>
		/// <returns>
		/// <para>This function does not return a value.</para>
		/// </returns>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shfreenamemappings void SHFreeNameMappings( HANDLE
		// hNameMappings );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "4552b2e0-9257-48f8-84cc-003217f1696f")]
		public static extern void SHFreeNameMappings(IntPtr hNameMappings);

		/// <summary>Retrieves disk space information for a disk volume.</summary>
		/// <param name="pszVolume">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A null-terminated string that specifies the volume for which size information is retrieved. This can be a drive letter, UNC name,
		/// or the path of a folder. You cannot use <c>NULL</c> to represent the current drive.
		/// </para>
		/// <para>
		/// When using Shell32.dll versions previous to version 5.0, this must be an ANSI string. Unicode is not supported in those versions.
		/// </para>
		/// </param>
		/// <param name="pqwFreeCaller">
		/// <para>Type: <c><c>ULARGE_INTEGER</c>*</c></para>
		/// <para>
		/// The address of a <c>ULARGE_INTEGER</c> value that receives the number of bytes on the volume available to the calling
		/// application. If the operating system implements per-user quotas, this value may be less than the total number of free bytes on
		/// the volume.
		/// </para>
		/// </param>
		/// <param name="pqwTot">
		/// <para>Type: <c><c>ULARGE_INTEGER</c>*</c></para>
		/// <para>The address of a <c>ULARGE_INTEGER</c> value that receives the total size of the volume, in bytes.</para>
		/// </param>
		/// <param name="pqwFree">
		/// <para>Type: <c><c>ULARGE_INTEGER</c>*</c></para>
		/// <para>The address of a <c>ULARGE_INTEGER</c> value that receives the number of bytes of free space on the volume.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>BOOL</c></para>
		/// <para>Returns <c>TRUE</c> if successful, <c>FALSE</c> otherwise.</para>
		/// </returns>
		// BOOL SHGetDiskFreeSpace( LPCTSTR pszVolume, ULARGE_INTEGER *pqwFreeCaller, ULARGE_INTEGER *pqwTot, ULARGE_INTEGER *pqwFree); https://msdn.microsoft.com/en-us/library/windows/desktop/bb762176(v=vs.85).aspx
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("Shellapi.h", MSDNShortId = "bb762176")]
		[return: MarshalAs(UnmanagedType.Bool)]
		public static extern bool SHGetDiskFreeSpace(string pszVolume, out ulong pqwFreeCaller, out ulong pqwTot, out ulong pqwFree);

		/// <summary>
		/// <para>Retrieves disk space information for a disk volume.</para>
		/// </summary>
		/// <param name="pszDirectoryName">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A null-terminated string that specifies the volume for which size information is retrieved. This can be a drive letter, UNC name,
		/// or the path of a folder. You cannot use <c>NULL</c> to represent the current drive.
		/// </para>
		/// </param>
		/// <param name="pulFreeBytesAvailableToCaller">
		/// <para>Type: <c>ULARGE_INTEGER*</c></para>
		/// <para>
		/// Pointer to a value that receives the number of bytes on the volume available to the calling application. If the operating system
		/// implements per-user quotas, this value may be less than the total number of free bytes on the volume.
		/// </para>
		/// </param>
		/// <param name="pulTotalNumberOfBytes">
		/// <para>Type: <c>ULARGE_INTEGER*</c></para>
		/// <para>Pointer to a value that receives the total size of the volume, in bytes.</para>
		/// </param>
		/// <param name="pulTotalNumberOfFreeBytes">
		/// <para>Type: <c>ULARGE_INTEGER*</c></para>
		/// <para>Pointer to a value that receives the number of bytes of free space on the volume.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>BOOL</c></para>
		/// <para>Returns <c>TRUE</c> if successful, <c>FALSE</c> otherwise.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// The similarly named function SHGetDiskFreeSpace is merely an alias for <c>SHGetDiskFreeSpaceEx</c>. When you call
		/// <c>SHGetDiskFreeSpace</c> you actually call this function.
		/// </para>
		/// <para>
		/// This function calls the GetDiskFreeSpaceEx function if it is available on the operating system. If <c>GetDiskFreeSpaceEx</c> is
		/// not available, it is emulated by calling the GetDiskFreeSpace function and manipulating the return values. For additional
		/// information, see the documentation for <c>GetDiskFreeSpaceEx</c>.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shgetdiskfreespaceexa BOOL SHGetDiskFreeSpaceExA( LPCSTR
		// pszDirectoryName, ULARGE_INTEGER *pulFreeBytesAvailableToCaller, ULARGE_INTEGER *pulTotalNumberOfBytes, ULARGE_INTEGER
		// *pulTotalNumberOfFreeBytes );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "f8adbfa8-124a-4934-b5dc-16e261c15a8b")]
		[return: MarshalAs(UnmanagedType.Bool)]
		public static extern bool SHGetDiskFreeSpaceEx(string pszDirectoryName, out ulong pulFreeBytesAvailableToCaller, out ulong pulTotalNumberOfBytes, out ulong pulTotalNumberOfFreeBytes);

		/// <summary>
		/// <para>Returns the type of media that is in the given drive.</para>
		/// </summary>
		/// <param name="pszDrive">
		/// <para>Type: <c>PCWSTR</c></para>
		/// <para>The drive in which to check the media type.</para>
		/// </param>
		/// <param name="pdwMediaContent">
		/// <para>Type: <c>DWORD*</c></para>
		/// <para>A pointer to the type of media in the given drive. A combination of ARCONTENT flags.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shgetdrivemedia HRESULT SHGetDriveMedia( PCWSTR
		// pszDrive, DWORD *pdwMediaContent );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "9b1208cd-3c13-456a-8a7f-0f149cb86d38")]
		public static extern HRESULT SHGetDriveMedia([MarshalAs(UnmanagedType.LPWStr)] string pszDrive, out ARCONTENT pdwMediaContent);

		/// <summary>Retrieves information about an object in the file system, such as a file, folder, directory, or drive root.</summary>
		/// <param name="pszPath">
		/// A pointer to a null-terminated string of maximum length MAX_PATH that contains the path and file name. Both absolute and relative
		/// paths are valid.
		/// <para>
		/// If the uFlags parameter includes the SHGFI_PIDL flag, this parameter must be the address of an ITEMIDLIST (PIDL) structure that
		/// contains the list of item identifiers that uniquely identifies the file within the Shell's namespace. The PIDL must be a fully
		/// qualified PIDL. Relative PIDLs are not allowed.
		/// </para>
		/// <para>
		/// If the uFlags parameter includes the SHGFI_USEFILEATTRIBUTES flag, this parameter does not have to be a valid file name. The
		/// function will proceed as if the file exists with the specified name and with the file attributes passed in the dwFileAttributes
		/// parameter. This allows you to obtain information about a file type by passing just the extension for pszPath and passing
		/// FILE_ATTRIBUTE_NORMAL in dwFileAttributes.
		/// </para>
		/// <para>This string can use either short (the 8.3 form) or long file names.</para>
		/// </param>
		/// <param name="dwFileAttributes">
		/// A combination of one or more file attribute flags (FILE_ATTRIBUTE_ values as defined in Winnt.h). If uFlags does not include the
		/// SHGFI_USEFILEATTRIBUTES flag, this parameter is ignored.
		/// </param>
		/// <param name="psfi">Pointer to a SHFILEINFO structure to receive the file information.</param>
		/// <param name="cbFileInfo">The size, in bytes, of the SHFILEINFO structure pointed to by the psfi parameter.</param>
		/// <param name="uFlags">The flags that specify the file information to retrieve.</param>
		/// <returns>
		/// Returns a value whose meaning depends on the uFlags parameter.
		/// <para>If uFlags does not contain SHGFI_EXETYPE or SHGFI_SYSICONINDEX, the return value is nonzero if successful, or zero otherwise.</para>
		/// <para>
		/// If uFlags contains the SHGFI_EXETYPE flag, the return value specifies the type of the executable file. It will be one of the
		/// following values.
		/// </para>
		/// </returns>
		[DllImport(Lib.Shell32, CharSet = CharSet.Auto, SetLastError = true)]
		[PInvokeData("Shellapi.h", MSDNShortId = "bb762179")]
		public static extern IntPtr SHGetFileInfo(string pszPath, FileAttributes dwFileAttributes, ref SHFILEINFO psfi, int cbFileInfo, SHGFI uFlags);

		/// <summary>Retrieves information about an object in the file system, such as a file, folder, directory, or drive root.</summary>
		/// <param name="itemIdList">
		/// A pointer to a null-terminated string of maximum length MAX_PATH that contains the path and file name. Both absolute and relative
		/// paths are valid.
		/// <para>
		/// If the uFlags parameter includes the SHGFI_PIDL flag, this parameter must be the address of an ITEMIDLIST (PIDL) structure that
		/// contains the list of item identifiers that uniquely identifies the file within the Shell's namespace. The PIDL must be a fully
		/// qualified PIDL. Relative PIDLs are not allowed.
		/// </para>
		/// <para>
		/// If the uFlags parameter includes the SHGFI_USEFILEATTRIBUTES flag, this parameter does not have to be a valid file name. The
		/// function will proceed as if the file exists with the specified name and with the file attributes passed in the dwFileAttributes
		/// parameter. This allows you to obtain information about a file type by passing just the extension for pszPath and passing
		/// FILE_ATTRIBUTE_NORMAL in dwFileAttributes.
		/// </para>
		/// <para>This string can use either short (the 8.3 form) or long file names.</para>
		/// </param>
		/// <param name="dwFileAttributes">
		/// A combination of one or more file attribute flags (FILE_ATTRIBUTE_ values as defined in Winnt.h). If uFlags does not include the
		/// SHGFI_USEFILEATTRIBUTES flag, this parameter is ignored.
		/// </param>
		/// <param name="psfi">Pointer to a SHFILEINFO structure to receive the file information.</param>
		/// <param name="cbFileInfo">The size, in bytes, of the SHFILEINFO structure pointed to by the psfi parameter.</param>
		/// <param name="uFlags">The flags that specify the file information to retrieve.</param>
		/// <returns>
		/// Returns a value whose meaning depends on the uFlags parameter.
		/// <para>If uFlags does not contain SHGFI_EXETYPE or SHGFI_SYSICONINDEX, the return value is nonzero if successful, or zero otherwise.</para>
		/// <para>
		/// If uFlags contains the SHGFI_EXETYPE flag, the return value specifies the type of the executable file. It will be one of the
		/// following values.
		/// </para>
		/// </returns>
		[DllImport(Lib.Shell32, CharSet = CharSet.Auto, SetLastError = true)]
		[PInvokeData("Shellapi.h", MSDNShortId = "bb762179")]
		public static extern IntPtr SHGetFileInfo(PIDL itemIdList, FileAttributes dwFileAttributes, ref SHFILEINFO psfi, int cbFileInfo, SHGFI uFlags);

		/// <summary>
		/// <para>Retrieves the localized name of a file in a Shell folder.</para>
		/// </summary>
		/// <param name="pszPath">
		/// <para>Type: <c>PCWSTR</c></para>
		/// <para>A pointer to a string that specifies the fully qualified path of the file.</para>
		/// </param>
		/// <param name="pszResModule">
		/// <para>Type: <c>PWSTR</c></para>
		/// <para>When this function returns, contains a pointer to a string resource that specifies the localized version of the file name.</para>
		/// </param>
		/// <param name="cch">
		/// <para>Type: <c>UINT</c></para>
		/// <para>When this function returns, contains the size of the string, in <c>WCHARs</c>, at pszResModule.</para>
		/// </param>
		/// <param name="pidsRes">
		/// <para>Type: <c>int*</c></para>
		/// <para>When this function returns, contains a pointer to the ID of the localized file name in the resource file.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shgetlocalizedname SHSTDAPI SHGetLocalizedName( PCWSTR
		// pszPath, PWSTR pszResModule, UINT cch, int *pidsRes );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "2929b77f-4467-44a8-9885-96f0c3e35584")]
		public static extern HRESULT SHGetLocalizedName([MarshalAs(UnmanagedType.LPWStr)] string pszPath, [MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszResModule, uint cch, out int pidsRes);

		/// <summary>
		/// <para>
		/// Creates a name for a new shortcut based on the shortcut's proposed target. This function does not create the shortcut, just the name.
		/// </para>
		/// </summary>
		/// <param name="pszLinkTo">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A pointer to the path and file name of the shortcut's target. If does not contain the <c>SHGNLI_PIDL</c> value, this parameter is
		/// the address of a null-terminated string that contains the target. If contains the <c>SHGNLI_PIDL</c> value, this parameter is a
		/// PIDL that represents the target.
		/// </para>
		/// </param>
		/// <param name="pszDir">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>A pointer to a null-terminated string that contains the path of the folder in which the shortcut would be created.</para>
		/// </param>
		/// <param name="pszName">
		/// <para>Type: <c>LPTSTR</c></para>
		/// <para>
		/// A pointer to a string that receives the null-terminated path and file name for the shortcut. This buffer is assumed to be at
		/// least MAX_PATH characters in size.
		/// </para>
		/// </param>
		/// <param name="pfMustCopy">
		/// <para>Type: <c>BOOL*</c></para>
		/// <para>
		/// The address of a <c>BOOL</c> value that receives a flag indicating whether the shortcut would be copied. When a shortcut to
		/// another shortcut is created, the Shell simply copies the target shortcut and modifies that copied shortcut appropriately. This
		/// parameter receives a nonzero value if the target specified in specifies a shortcut that will cause the target shortcut to be
		/// copied. This parameter receives zero if the target does not specify a shortcut that would be copied.
		/// </para>
		/// </param>
		/// <param name="uFlags">
		/// <para>Type: <c>UINT</c></para>
		/// <para>The options for the function. This can be zero or a combination of the following values.</para>
		/// <para>SHGNLI_PIDL (0x000000001)</para>
		/// <para>
		/// 0x000000001. The target pointed to by is a PIDL that represents the target. If this flag is not included, is regarded as the
		/// address of a string that contains the path and file name of the target.
		/// </para>
		/// <para>SHGNLI_NOUNIQUE (0x000000002)</para>
		/// <para>
		/// 0x000000002. Skip the normal checks that ensure that the shortcut name is unique within the destination folder. If this flag is
		/// not included, the function creates the shortcut name and then determines whether the name is unique in the destination folder. If
		/// a file with the same name already exists in the destination folder, the shortcut name will be modified. This process is repeated
		/// until a unique name is found.
		/// </para>
		/// <para>SHGNLI_PREFIXNAME (0x000000004)</para>
		/// <para>0x000000004. The created name will be preceded by the string "Shortcut to ".</para>
		/// <para>SHGNLI_NOLNK (0x000000008)</para>
		/// <para>
		/// 0x000000008. Version 5.0 Do not add the .lnk file name extension. You must set the <c>_WIN32_IE</c> macro to 5.01 or greater to
		/// use this flag. For more information about versioning, see Shell and Common Controls Versions.
		/// </para>
		/// <para>SHGNLI_NOLOCNAME (0x000000010)</para>
		/// <para>
		/// 0x000000010. <c>Windows Vista and later</c>. Use the non-localized parsing name of the target pointed to by as the name of the
		/// shortcut file. If this flag is not set, the localized name is used.
		/// </para>
		/// <para>SHGNLI_USEURLEXT (0x000000020)</para>
		/// <para>
		/// 0x000000020. <c>Windows 7 and later</c>. Append a .url file name extension (rather than .lnk) to the name pointed to by . If this
		/// flag is not set, the shortcut name uses a .lnk extension unless SHGNLI_NOLNK is set.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>BOOL</c></para>
		/// <para>Returns <c>TRUE</c> if successful; otherwise, <c>FALSE</c>.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// <c>SHGetNewLinkInfo</c> determines whether the destination file system supports long file names. If it does, a long file name is
		/// used for the shortcut name. If the destination file system does not support long file names, the shortcut name is returned in an
		/// 8.3 format.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shgetnewlinkinfoa BOOL SHGetNewLinkInfoA( LPCSTR
		// pszLinkTo, LPCSTR pszDir, LPSTR pszName, BOOL *pfMustCopy, UINT uFlags );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "ca658d5c-af7b-400c-8f4d-7d4b07bf7f2b")]
		[return: MarshalAs(UnmanagedType.Bool)]
		public static extern bool SHGetNewLinkInfo(string pszLinkTo, string pszDir, StringBuilder pszName, [MarshalAs(UnmanagedType.Bool)] out bool pfMustCopy, SHGNLI uFlags);

		/// <summary>
		/// <para>
		/// Retrieves an object that represents a specific window's collection of properties, which allows those properties to be queried or set.
		/// </para>
		/// </summary>
		/// <param name="hwnd">
		/// <para>Type: <c>HWND</c></para>
		/// <para>A handle to the window whose properties are being retrieved.</para>
		/// </param>
		/// <param name="riid">
		/// <para>Type: <c>REFIID</c></para>
		/// <para>A reference to the IID of the property store object to retrieve through . This is typically IID_IPropertyStore.</para>
		/// </param>
		/// <param name="ppv">
		/// <para>Type: <c>void**</c></para>
		/// <para>When this function returns, contains the interface pointer requested in . This is typically IPropertyStore.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// An application can use this function to obtain access to a window's property store so that it can set an explicit Application
		/// User Model ID (AppUserModelID) in the System.AppUserModel.ID property.
		/// </para>
		/// <para>
		/// A window's properties must be removed before the window is closed. If this is not done, the resources used by those properties
		/// are not returned to the system. A property is removed by setting it to the PROPVARIANT type VT_EMPTY.
		/// </para>
		/// <para>
		/// When a call is made to IPropertyStore::SetValue on the object retrieved through , the properties and values are immediately
		/// stored on the window. Therefore, no call to IPropertyStore::Commit is needed. No error occurs if it is called, but it has no effect.
		/// </para>
		/// <para>
		/// An application sets AppUserModelIDs on individual windows to control the application's taskbar grouping and Jump List contents.
		/// For instance, a suite application might want to provide a different taskbar button for each of its subfeatures, with the windows
		/// relating to that subfeature grouped under that button. Without window-level AppUserModelIDs, those windows would all be grouped
		/// together under the main process.
		/// </para>
		/// <para>
		/// Applications should also use this property store to set these relaunch properties so that the system can return the application
		/// to that state.
		/// </para>
		/// <list type="bullet">
		/// <item>System.AppUserModel.RelaunchCommand</item>
		/// <item>System.AppUserModel.RelaunchDisplayNameResource</item>
		/// <item>System.AppUserModel.RelaunchIconResource</item>
		/// </list>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shgetpropertystoreforwindow SHSTDAPI
		// SHGetPropertyStoreForWindow( HWND hwnd, REFIID riid, void **ppv );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "772aa2c8-6dd1-480c-a008-58f30902cb80")]
		public static extern HRESULT SHGetPropertyStoreForWindow(HWND hwnd, in Guid riid, [MarshalAs(UnmanagedType.IUnknown)] out object ppv);

		/// <summary>
		/// <para>Retrieves information about system-defined Shell icons.</para>
		/// </summary>
		/// <param name="siid">
		/// <para>Type: <c>SHSTOCKICONID</c></para>
		/// <para>One of the values from the SHSTOCKICONID enumeration that specifies which icon should be retrieved.</para>
		/// </param>
		/// <param name="uFlags">
		/// <para>Type: <c>UINT</c></para>
		/// <para>A combination of zero or more of the following flags that specify which information is requested.</para>
		/// <para>SHGSI_ICONLOCATION</para>
		/// <para>
		/// The <c>szPath</c> and <c>iIcon</c> members of the SHSTOCKICONINFO structure receive the path and icon index of the requested
		/// icon, in a format suitable for passing to the ExtractIcon function. The numerical value of this flag is zero, so you always get
		/// the icon location regardless of other flags.
		/// </para>
		/// <para>SHGSI_ICON</para>
		/// <para>The <c>hIcon</c> member of the SHSTOCKICONINFO structure receives a handle to the specified icon.</para>
		/// <para>SHGSI_SYSICONINDEX</para>
		/// <para>
		/// The <c>iSysImageImage</c> member of the SHSTOCKICONINFO structure receives the index of the specified icon in the system imagelist.
		/// </para>
		/// <para>SHGSI_LINKOVERLAY</para>
		/// <para>Modifies the SHGSI_ICON value by causing the function to add the link overlay to the file's icon.</para>
		/// <para>SHGSI_SELECTED</para>
		/// <para>Modifies the SHGSI_ICON value by causing the function to blend the icon with the system highlight color.</para>
		/// <para>SHGSI_LARGEICON</para>
		/// <para>
		/// Modifies the SHGSI_ICON value by causing the function to retrieve the large version of the icon, as specified by the SM_CXICON
		/// and SM_CYICON system metrics.
		/// </para>
		/// <para>SHGSI_SMALLICON</para>
		/// <para>
		/// Modifies the SHGSI_ICON value by causing the function to retrieve the small version of the icon, as specified by the SM_CXSMICON
		/// and SM_CYSMICON system metrics.
		/// </para>
		/// <para>SHGSI_SHELLICONSIZE</para>
		/// <para>
		/// Modifies the SHGSI_LARGEICON or SHGSI_SMALLICON values by causing the function to retrieve the Shell-sized icons rather than the
		/// sizes specified by the system metrics.
		/// </para>
		/// </param>
		/// <param name="psii">
		/// <para>Type: <c>SHSTOCKICONINFO*</c></para>
		/// <para>
		/// A pointer to a SHSTOCKICONINFO structure. When this function is called, the <c>cbSize</c> member of this structure needs to be
		/// set to the size of the <c>SHSTOCKICONINFO</c> structure. When this function returns, contains a pointer to a
		/// <c>SHSTOCKICONINFO</c> structure that contains the requested information.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// If this function returns an icon handle in the <c>hIcon</c> member of the SHSTOCKICONINFO structure pointed to by , you are
		/// responsible for freeing the icon with DestroyIcon when you no longer need it.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shgetstockiconinfo SHSTDAPI SHGetStockIconInfo(
		// SHSTOCKICONID siid, UINT uFlags, SHSTOCKICONINFO *psii );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "c08b1a53-e67c-4ed0-a9c6-d000c448e182")]
		public static extern HRESULT SHGetStockIconInfo(SHSTOCKICONID siid, uint uFlags, ref SHSTOCKICONINFO psii);

		/// <summary>
		/// <para>Retrieves a specified user's unread message count for any or all email accounts.</para>
		/// </summary>
		/// <param name="hKeyUser">
		/// <para>Type: <c>HKEY</c></para>
		/// <para>
		/// A valid HKEY for a given user. This parameter should be <c>NULL</c> if the function is called in a user's environment, in which
		/// case <c>HKEY_CURRENT_USER</c> is used. This parameter should be <c>NULL</c> if the function is called from the SYSTEM context, in
		/// which case <c>HKEY_USERS</c>&lt;i&gt;{SID} is used.
		/// </para>
		/// </param>
		/// <param name="pszMailAddress">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A pointer to a string in Unicode that specifies the email address of an account belonging to the specified user. When this
		/// parameter is <c>NULL</c>, returns the total count of unread messages for all accounts owned by the designated user.
		/// </para>
		/// </param>
		/// <param name="pdwCount">
		/// <para>Type: <c>DWORD*</c></para>
		/// <para>Pointer to a DWORD value which receives the unread message count.</para>
		/// </param>
		/// <param name="pFileTime">
		/// <para>Type: <c>FILETIME*</c></para>
		/// <para>
		/// A pointer to a FILETIME structure. The use of this parameter is determined by whether is <c>NULL</c>. If is <c>NULL</c>, then
		/// this parameter is treated as an [in] parameter, which specifies a filter, so that only unread mail newer than the specified time
		/// appears. If is not <c>NULL</c>, then this parameter is treated as an [out] parameter, which points to a <c>FILETIME</c> structure
		/// into which the function places the <c>timestamp</c> of the last SHSetUnreadMailCount call for the specified user and email account.
		/// </para>
		/// </param>
		/// <param name="pszShellExecuteCommand">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A pointer to a string that returns the ShellExecute command statement passed into the last SHSetUnreadMailCount call for the
		/// specified user and email account. This command string starts the email application that owns the account referenced by . If the
		/// ShellExecute command is not required, this parameter can be <c>NULL</c>. If is <c>NULL</c>, this parameter is ignored and must be <c>NULL</c>.
		/// </para>
		/// </param>
		/// <param name="cchShellExecuteCommand">
		/// <para>Type: <c>int</c></para>
		/// <para>
		/// The maximum size, in characters, of the ShellExecute command buffer pointed to by . This parameter must be zero for total counts
		/// when is <c>NULL</c>. It can also be <c>NULL</c> whenever the ShellExecute command string is not required.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shgetunreadmailcountw HRESULT SHGetUnreadMailCountW(
		// HKEY hKeyUser, LPCWSTR pszMailAddress, DWORD *pdwCount, FILETIME *pFileTime, LPWSTR pszShellExecuteCommand, int
		// cchShellExecuteCommand );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true, CharSet = CharSet.Unicode)]
		[PInvokeData("shellapi.h", MSDNShortId = "d2a57fa0-13fe-4e12-89cc-8a6dbdb44f08")]
		public static extern HRESULT SHGetUnreadMailCountW(HKEY hKeyUser, string pszMailAddress, out uint pdwCount, ref System.Runtime.InteropServices.ComTypes.FILETIME pFileTime, StringBuilder pszShellExecuteCommand, int cchShellExecuteCommand);

		/// <summary>
		/// <para>Executes a command on a printer object.</para>
		/// <para>
		/// <c>Note</c> This function has been deprecated as of Windows Vista. It is recommended that, in its place, you invoke verbs on
		/// printers through IContextMenu or ShellExecute.
		/// </para>
		/// </summary>
		/// <param name="hwnd">
		/// <para>Type: <c>HWND</c></para>
		/// <para>The handle of the parent window of any windows or dialog boxes that are created during the operation.</para>
		/// </param>
		/// <param name="uAction">
		/// <para>Type: <c>UINT</c></para>
		/// <para>The type of printer operation to perform. One of the following values:</para>
		/// <para>PRINTACTION_OPEN (0)</para>
		/// <para>0x0. Open the printer specified by . The parameter is ignored.</para>
		/// <para>PRINTACTION_PROPERTIES (1)</para>
		/// <para>
		/// 0x1. Display the property pages for the printer specified by . The parameter can be <c>NULL</c> or can name a specific property
		/// sheet to display, either by name or number. If the high <c>WORD</c> of is nonzero, it is assumed that this parameter is a pointer
		/// to a buffer that contains the name of the sheet to open. Otherwise, is seen as the zero-based index of the property sheet to open.
		/// </para>
		/// <para>PRINTACTION_NETINSTALL (2)</para>
		/// <para>0x2. Install the network printer specified by . The parameter is ignored.</para>
		/// <para>PRINTACTION_NETINSTALLLINK (3)</para>
		/// <para>
		/// 0x3. Create a shortcut to the network printer specified by . The parameter specifies the drive and path of the folder in which to
		/// create the shortcut. The network printer must already have been installed on the local computer.
		/// </para>
		/// <para>PRINTACTION_TESTPAGE (4)</para>
		/// <para>0x4. Print a test page on the printer specified by . The parameter is ignored.</para>
		/// <para>PRINTACTION_OPENNETPRN (5)</para>
		/// <para>0x5. Open the network printer specified by . The parameter is ignored.</para>
		/// <para>PRINTACTION_DOCUMENTDEFAULTS (6)</para>
		/// <para>0x6. Display the default document properties for the printer specified by . The parameter is ignored.</para>
		/// <para>PRINTACTION_SERVERPROPERTIES (7)</para>
		/// <para>0x7. Display the properties for the printer server specified by . The parameter is ignored.</para>
		/// </param>
		/// <param name="lpBuf1">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// Pointer to a null-terminated string that contains additional information for the printer command. The information contained in
		/// this parameter depends upon the value of .
		/// </para>
		/// </param>
		/// <param name="lpBuf2">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// Pointer to a null-terminated string that contains additional information for the printer command. The information contained in
		/// this parameter depends upon the value of .
		/// </para>
		/// </param>
		/// <param name="fModal">
		/// <para>Type: <c>BOOL</c></para>
		/// <para>
		/// <c>TRUE</c> to specify that <c>SHInvokePrinterCommand</c> should not return until the command is completed; <c>FALSE</c> if the
		/// function should return as soon as the command is initialized.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>BOOL</c></para>
		/// <para>Returns <c>TRUE</c> if successful; otherwise, <c>FALSE</c>.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// When a printer name is specified by , the name can either be the name of a local printer or the server and share name of a
		/// network printer. When specifying a network printer name, the name must be specified in this format:
		/// </para>
		/// <para>This function is implemented in</para>
		/// <para>Shell versions 4.71</para>
		/// <para>
		/// and later. In order to maintain backward compatibility with previous Shell versions, this function should not be used explicitly.
		/// Instead, the
		/// </para>
		/// <para>LoadLibrary</para>
		/// <para>and</para>
		/// <para>GetProcAddress</para>
		/// <para>functions should be used to obtain the function address.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shinvokeprintercommanda BOOL SHInvokePrinterCommandA(
		// HWND hwnd, UINT uAction, LPCSTR lpBuf1, LPCSTR lpBuf2, BOOL fModal );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "32a5802f-cef7-4dbd-affd-82285fe97a8c")]
		[return: MarshalAs(UnmanagedType.Bool)]
		public static extern bool SHInvokePrinterCommand(HWND hwnd, PRINTACTION uAction, string lpBuf1, string lpBuf2, [MarshalAs(UnmanagedType.Bool)] bool fModal);

		/// <summary>
		/// <para>
		/// Determines whether a file or folder is available for offline use. This function also determines whether the file would be opened
		/// from the network, from the local Offline Files cache, or from both locations.
		/// </para>
		/// </summary>
		/// <param name="pwszPath">
		/// <para>TBD</para>
		/// </param>
		/// <param name="pdwStatus">
		/// <para>Type: <c>LPDWORD</c></para>
		/// <para>A pointer to a variable of type <c>DWORD</c> that receives one or more of the following flags if the function succeeds.</para>
		/// <para>OFFLINE_STATUS_LOCAL (0x01)</para>
		/// <para>If the file is open, it is open in the cache.</para>
		/// <para>OFFLINE_STATUS_REMOTE (0x02)</para>
		/// <para>If the file is open, it is open on the server.</para>
		/// <para>OFFLINE_STATUS_INCOMPLETE (0x04)</para>
		/// <para>The local copy is currently incomplete. The file cannot be opened in offline mode until it has been synchronized.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>This function can return one of these values.</para>
		/// <list type="table">
		/// <listheader>
		/// <term>Return code</term>
		/// <term>Description</term>
		/// </listheader>
		/// <item>
		/// <term>S_OK</term>
		/// <term>The file or directory is cached. It is available offline unless OFFLINE_STATUS_INCOMPLETE is set.</term>
		/// </item>
		/// <item>
		/// <term>E_INVALIDARG</term>
		/// <term>The path is invalid or not a network path. The file or directory is not cached.</term>
		/// </item>
		/// <item>
		/// <term>E_FAIL</term>
		/// <term>The file or directory is not cached.</term>
		/// </item>
		/// </list>
		/// </returns>
		/// <remarks>
		/// <para>If is a directory, <c>SHIsFileAvailableOffline</c> will not return the <c>OFFLINE_STATUS_INCOMPLETE</c> flag.</para>
		/// <para>
		/// If <c>SHIsFileAvailableOffline</c> returns both <c>OFFLINE_STATUS_LOCAL</c> and <c>OFFLINE_STATUS_REMOTE</c>, the file or
		/// directory is open in both places. This is common when the server is online.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shisfileavailableoffline SHSTDAPI
		// SHIsFileAvailableOffline( PCWSTR pwszPath, DWORD *pdwStatus );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "9acf212d-9309-42b0-ba96-faa0ecf0b865")]
		public static extern HRESULT SHIsFileAvailableOffline([MarshalAs(UnmanagedType.LPWStr)] string pwszPath, out OFFLINE_STATUS pdwStatus);

		/// <summary>
		/// <para>
		/// Signals the Shell that during the next operation requiring overlay information, it should load icon overlay identifiers that
		/// either failed creation or were not present for creation at startup. Identifiers that have already been loaded are not affected.
		/// </para>
		/// </summary>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>Always returns S_OK.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// A call to <c>SHLoadNonloadedIconOverlayIdentifiers</c> does not result in the immediate loading of a Shell extension, nor does it
		/// cause an icon overlay handler to be loaded. A call to <c>SHLoadNonloadedIconOverlayIdentifiers</c> results in a situation such
		/// that the next code to ask for icon overlay information triggers a comparison of icon overlays in the registry to those that are
		/// already loaded. If an icon overlay is newly registered and the system has not already reached its upper limit of fifteen icon
		/// overlays, the new overlay is loaded. <c>SHLoadNonloadedIconOverlayIdentifiers</c> alone does not load a new icon overlay; you
		/// also need to trigger an action that uses the overlay, such as a refresh of a Windows Explorer view.
		/// </para>
		/// <para>For more information, see How to Implement Icon Overlay Handlers.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shloadnonloadediconoverlayidentifiers SHSTDAPI
		// SHLoadNonloadedIconOverlayIdentifiers( );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "d2c4f37e-6e9d-4536-90ea-d69461c4105a")]
		public static extern HRESULT SHLoadNonloadedIconOverlayIdentifiers();

		/// <summary>
		/// <para>Retrieves the size of the Recycle Bin and the number of items in it, for a specified drive.</para>
		/// </summary>
		/// <param name="pszRootPath">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// The address of a <c>null</c>-terminated string of maximum length MAX_PATH to contain the path of the root drive on which the
		/// Recycle Bin is located. This parameter can contain the address of a string formatted with the drive, folder, and subfolder names (C:\Windows\System...).
		/// </para>
		/// </param>
		/// <param name="pSHQueryRBInfo">
		/// <para>Type: <c>LPSHQUERYRBINFO</c></para>
		/// <para>
		/// The address of a SHQUERYRBINFO structure that receives the Recycle Bin information. The <c>cbSize</c> member of the structure
		/// must be set to the size of the structure before calling this API.
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// With Windows 2000, if <c>NULL</c> is passed in the parameter, the function fails and returns an E_INVALIDARG error code. In
		/// earlier versions of the operating system, you can pass an empty string or <c>NULL</c>. If contains an empty string or
		/// <c>NULL</c>, information is retrieved for all Recycle Bins on all drives.
		/// </para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shqueryrecyclebina SHSTDAPI SHQueryRecycleBinA( LPCSTR
		// pszRootPath, LPSHQUERYRBINFO pSHQueryRBInfo );
		[DllImport(Lib.Shell32, SetLastError = false, CharSet = CharSet.Auto)]
		[PInvokeData("shellapi.h", MSDNShortId = "a9a80486-2c99-4916-af25-10b00573456b")]
		public static extern HRESULT SHQueryRecycleBin(string pszRootPath, ref SHQUERYRBINFO pSHQueryRBInfo);

		/// <summary>
		/// <para>Checks the state of the computer for the current user to determine whether sending a notification is appropriate.</para>
		/// </summary>
		/// <param name="pquns">
		/// <para>Type: <c>QUERY_USER_NOTIFICATION_STATE*</c></para>
		/// <para>When this function returns, contains a pointer to one of the values of the QUERY_USER_NOTIFICATION_STATE enumeration.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// Applications should call <c>SHQueryUserNotificationState</c> and test the return value before displaying any notification UI that
		/// is similar to the balloon notifications generated by Shell_NotifyIcon. Notifications should only be displayed if this API returns
		/// QNS_ACCEPTS_NOTIFICATIONS. This informs the application whether the user is running processes that should not be interrupted.
		/// Top-level windows receive a WM_SETTINGCHANGE message when the user turns presentation settings on or off, and also when the
		/// user's session is locked or unlocked. Note that there are no notifications sent when the user starts or stops a full-screen application.
		/// </para>
		/// <para>If this function returns QUNS_QUIET_TIME, notifications should be displayed only if critical.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shqueryusernotificationstate SHSTDAPI
		// SHQueryUserNotificationState( QUERY_USER_NOTIFICATION_STATE *pquns );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "da6b3915-f4fe-4bab-9bae-9bff0b97b5a0")]
		public static extern HRESULT SHQueryUserNotificationState(out QUERY_USER_NOTIFICATION_STATE pquns);

		/// <summary>
		/// <para>Removes the localized name of a file in a Shell folder.</para>
		/// </summary>
		/// <param name="pszPath">
		/// <para>Type: <c>PCWSTR</c></para>
		/// <para>A pointer to a null-terminated, Unicode string that specifies the fully qualified path of the target file.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>
		/// When a display name string is set by SHSetLocalizedName, Windows Explorer uses that string for display instead of the file name.
		/// The path to the file is unchanged.
		/// </para>
		/// <para>
		/// Applications can use the IShellFolder::GetDisplayNameOf method to get the display (localized) name through with the
		/// SIGDN_NORMALDISPLAY flag and the parsing (non-localized) name with SIGDN_DESKTOPABSOLUTEPARSING.
		/// </para>
		/// <para>Calling <c>SHRemoveLocalizedName</c> makes the display name identical to the parsing name.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shremovelocalizedname SHSTDAPI SHRemoveLocalizedName(
		// PCWSTR pszPath );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "ed30546f-3531-42df-9018-1a24a79a0b79")]
		public static extern HRESULT SHRemoveLocalizedName([MarshalAs(UnmanagedType.LPWStr)] string pszPath);

		/// <summary>
		/// <para>Sets the localized name of a file in a Shell folder.</para>
		/// </summary>
		/// <param name="pszPath">
		/// <para>Type: <c>PCWSTR</c></para>
		/// <para>A pointer to a string that specifies the fully qualified path of the target file.</para>
		/// </param>
		/// <param name="pszResModule">
		/// <para>Type: <c>PCWSTR</c></para>
		/// <para>A pointer to a string resource that specifies the localized version of the file name.</para>
		/// </param>
		/// <param name="idsRes">
		/// <para>Type: <c>int</c></para>
		/// <para>An integer ID that specifies the localized file name in the string resource.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para>If this function succeeds, it returns <c>S_OK</c>. Otherwise, it returns an <c>HRESULT</c> error code.</para>
		/// </returns>
		/// <remarks>
		/// <para>When this string is set, Explorer displays this string instead of the file name. The path to the file is unchanged.</para>
		/// <para>
		/// Applications can get the display (localized) name with IShellFolder::GetDisplayNameOf with the SIGDN_NORMALDISPLAY flag and the
		/// parsing (non-localized) name with IShellItem::GetDisplayName using the SIGDN_DESKTOPABSOLUTEPARSING flag.
		/// </para>
		/// <para>Calling SHRemoveLocalizedName makes the display name identical to the parsing name.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shsetlocalizedname SHSTDAPI SHSetLocalizedName( PCWSTR
		// pszPath, PCWSTR pszResModule, int idsRes );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true, CharSet = CharSet.Unicode)]
		[PInvokeData("shellapi.h", MSDNShortId = "35b83fc8-3dad-4f08-a3fe-ce047b2ca3a2")]
		public static extern HRESULT SHSetLocalizedName(string pszPath, string pszResModule, int idsRes);

		/// <summary>
		/// <para>Stores the current user's unread message count for a specified email account in the registry.</para>
		/// </summary>
		/// <param name="pszMailAddress">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>A pointer to a string in Unicode that contains the current user's full email address.</para>
		/// </param>
		/// <param name="dwCount">
		/// <para>Type: <c>DWORD</c></para>
		/// <para>The number of unread messages.</para>
		/// </param>
		/// <param name="pszShellExecuteCommand">
		/// <para>Type: <c>LPCTSTR</c></para>
		/// <para>
		/// A pointer to a string in Unicode that contains the full text of a command that can be passed to ShellExecute. This command should
		/// start the email application that owns the account referenced by .
		/// </para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>HRESULT</c></para>
		/// <para><c>HRESULT</c>, which includes the following possible values.</para>
		/// <list type="table">
		/// <listheader>
		/// <term>Return code</term>
		/// <term>Description</term>
		/// </listheader>
		/// <item>
		/// <term>S_OK</term>
		/// <term>The call completed successfully.</term>
		/// </item>
		/// <item>
		/// <term>E_OUTOFMEMORY</term>
		/// <term>Insufficient memory available.</term>
		/// </item>
		/// <item>
		/// <term>E_INVALIDARG</term>
		/// <term>Invalid string argument in either the or parameters.</term>
		/// </item>
		/// </list>
		/// </returns>
		/// <remarks>
		/// <para>When this function updates the registry, the new registry entry is automatically stamped with the current time and date.</para>
		/// <para>
		/// If this function is called by different independent software vendors (ISVs) that specify the same email name, only the last call
		/// is saved. That is, calls to this function overwrite any previously saved value for the same email address, even if the calls are
		/// made by different ISVs.
		/// </para>
		/// <para>
		/// It is recommended that the count of unread messages be set only for the main Inbox of the users account. Mail in sub-folders such
		/// as Drafts or Deleted Items should be ignored.
		/// </para>
		/// <para>
		/// It is important that email clients do not set the number of unread messages to 0 when the application exits, because this causes
		/// the number of unread messages to be erroneously reported as 0.
		/// </para>
		/// <para>Because this function uses HKEY_CURRENT_USER, it should not be called by a system process impersonating a user.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shsetunreadmailcountw HRESULT SHSetUnreadMailCountW(
		// LPCWSTR pszMailAddress, DWORD dwCount, LPCWSTR pszShellExecuteCommand );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true, CharSet = CharSet.Unicode)]
		[PInvokeData("shellapi.h", MSDNShortId = "4a0e1ade-8df1-41b5-b6ea-dad427b50f5a")]
		public static extern HRESULT SHSetUnreadMailCountW(string pszMailAddress, uint dwCount, string pszShellExecuteCommand);

		/// <summary>
		/// <para>Uses CheckTokenMembership to test whether the given token is a member of the local group with the specified RID.</para>
		/// </summary>
		/// <param name="hToken">
		/// <para>Type: <c>HANDLE</c></para>
		/// <para>A handle to the token. This value can be <c>NULL</c>.</para>
		/// </param>
		/// <param name="ulRID">
		/// <para>Type: <c>ULONG</c></para>
		/// <para>The RID of the local group for which membership is tested.</para>
		/// </param>
		/// <returns>
		/// <para>Type: <c>BOOL</c></para>
		/// <para>Returns <c>TRUE</c> on success, <c>FALSE</c> on failure.</para>
		/// </returns>
		/// <remarks>
		/// <para>This function wraps CheckTokenMembership and only checks local groups.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/nf-shellapi-shtesttokenmembership BOOL SHTestTokenMembership( HANDLE
		// hToken, ULONG ulRID );
		[DllImport(Lib.Shell32, SetLastError = false, ExactSpelling = true)]
		[PInvokeData("shellapi.h", MSDNShortId = "ac2d591a-f431-4da7-aa9f-0476634ec9cf")]
		[return: MarshalAs(UnmanagedType.Bool)]
		public static extern bool SHTestTokenMembership(HTOKEN hToken, uint ulRID);

		/// <summary>
		/// <para>Contains information about a system appbar message.</para>
		/// </summary>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/ns-shellapi-_appbardata typedef struct _AppBarData { DWORD cbSize;
		// HWND hWnd; UINT uCallbackMessage; UINT uEdge; RECT rc; LPARAM lParam; } APPBARDATA, *PAPPBARDATA;
		[PInvokeData("shellapi.h", MSDNShortId = "cf86fe15-4beb-49b7-b73e-2ad61cedc3f8")]
		public struct APPBARDATA
		{
			/// <summary>
			/// <para>Type: <c>DWORD</c></para>
			/// <para>The size of the structure, in bytes.</para>
			/// </summary>
			public uint cbSize;

			/// <summary>
			/// <para>Type: <c>HWND</c></para>
			/// <para>
			/// The handle to the appbar window. Not all messages use this member. See the individual message page to see if you need to
			/// provide an <c>hWind</c> value.
			/// </para>
			/// </summary>
			public HWND hWnd;

			/// <summary>
			/// <para>Type: <c>LPARAM</c></para>
			/// <para>A message-dependent value. This member is used with these messages:</para>
			/// <para>ABM_SETAUTOHIDEBAR</para>
			/// <para>ABM_SETAUTOHIDEBAREX</para>
			/// <para>ABM_SETSTATE</para>
			/// <para>See the individual message pages for details.</para>
			/// </summary>
			public IntPtr lParam;

			/// <summary>
			/// <para>Type: <c>RECT</c></para>
			/// <para>A RECT structure whose use varies depending on the message:</para>
			/// <list type="bullet">
			/// <item>
			/// ABM_GETTASKBARPOS, ABM_QUERYPOS, ABM_SETPOS: The bounding rectangle, in screen coordinates, of an appbar or the Windows taskbar.
			/// </item>
			/// <item>
			/// ABM_GETAUTOHIDEBAREX, ABM_SETAUTOHIDEBAREX: The monitor on which the operation is being performed. This information can be
			/// retrieved through the GetMonitorInfo function.
			/// </item>
			/// </list>
			/// </summary>
			public RECT rc;

			/// <summary>
			/// <para>Type: <c>UINT</c></para>
			/// <para>
			/// An application-defined message identifier. The application uses the specified identifier for notification messages that it
			/// sends to the appbar identified by the <c>hWnd</c> member. This member is used when sending the ABM_NEW message.
			/// </para>
			/// </summary>
			public uint uCallbackMessage;

			/// <summary>
			/// <para>Type: <c>UINT</c></para>
			/// <para>A value that specifies an edge of the screen. This member is used when sending one of these messages:</para>
			/// <para>ABM_GETAUTOHIDEBAR</para>
			/// <para>ABM_SETAUTOHIDEBAR</para>
			/// <para>ABM_GETAUTOHIDEBAREX</para>
			/// <para>ABM_SETAUTOHIDEBAREX</para>
			/// <para>ABM_QUERYPOS</para>
			/// <para>ABM_SETPOS</para>
			/// <para>This member can be one of the following values.</para>
			/// <para>ABE_BOTTOM</para>
			/// <para>Bottom edge.</para>
			/// <para>ABE_LEFT</para>
			/// <para>Left edge.</para>
			/// <para>ABE_RIGHT</para>
			/// <para>Right edge.</para>
			/// <para>ABE_TOP</para>
			/// <para>Top edge.</para>
			/// </summary>
			public ABE uEdge;
		}

		/// <summary>Defines information used by AssocCreateForClasses to retrieve an IQueryAssociations interface for a given file association.</summary>
		[PInvokeData("shellapi.h", MSDNShortId = "1d1a963f-7ebb-4ba6-9a97-795c8ef11ae4")]
		[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
		public struct ASSOCIATIONELEMENT
		{
			/// <summary>
			/// Where to obtain association data and the form the data is stored in. One of the following values from the ASSOCCLASS enumeration.
			/// </summary>
			public ASSOCCLASS ac;

			/// <summary>A registry key that specifies a class that contains association information.</summary>
			public HKEY hkClass;

			/// <summary>A pointer to the name of a class that contains association information.</summary>
			public string pszClass;
		}

		/// <summary>
		/// <para>Contains information that the system needs to display notifications in the notification area. Used by Shell_NotifyIcon.</para>
		/// </summary>
		/// <remarks>
		/// <para>
		/// See Notifications in the Windows User Experience Interaction Guidelines for more information on notification UI and content best practices.
		/// </para>
		/// <para>
		/// If you set the <c>NIF_INFO</c> flag in the <c>uFlags</c> member, the balloon-style notification is used. For more discussion of
		/// these notifications, see Balloon tooltips.
		/// </para>
		/// <para>
		/// No more than one balloon notification at a time can be displayed for the taskbar. If an application attempts to display a
		/// notification when one is already being displayed, the new notification is queued and displayed when the older notification goes
		/// away. In versions of Windows before Windows Vista, the new notification would not appear until the existing notification has been
		/// visible for at least the system minimum timeout length, regardless of the original notification's <c>uTimeout</c> value. If the
		/// user does not appear to be using the computer, the system does not count this time toward the timeout.
		/// </para>
		/// <para>
		/// Several members of this structure are only supported for Windows 2000 and later. To enable these members, include one of the
		/// following lines in your header:
		/// </para>
		/// <para>
		/// Note that you must initialize the structure with its size. If you use the size of the currently defined structure, the
		/// application might not run with earlier versions of Shell32.dll, which expect a smaller structure. You can run your application
		/// against earlier versions of Shell32.dll by defining the appropriate version number (see
		/// </para>
		/// <para>Shell and Common Controls Versions</para>
		/// <para>). However, this might cause problems if your application also needs to run on more recent systems.</para>
		/// <para>
		/// You can maintain application compatibility with all Shell32.dll versions while still using the current header files by setting
		/// the size of the <c>NOTIFYICONDATA</c> structure appropriately. Before you initialize the structure, use DllGetVersion to
		/// determine which Shell32.dll version is installed on the system and initialize <c>cbSize</c> with one of these values:
		/// </para>
		/// <list type="table">
		/// <listheader>
		/// <term>Shell32.dll Version</term>
		/// <term>cbSize</term>
		/// </listheader>
		/// <item>
		/// <term>6.0.6 or higher (Windows Vista and later)</term>
		/// <term>sizeof(NOTIFYICONDATA)</term>
		/// </item>
		/// <item>
		/// <term>6.0 (Windows XP)</term>
		/// <term>NOTIFYICONDATA_V3_SIZE</term>
		/// </item>
		/// <item>
		/// <term>5.0 (Windows 2000)</term>
		/// <term>NOTIFYICONDATA_V2_SIZE</term>
		/// </item>
		/// <item>
		/// <term>Versions lower than 5.0</term>
		/// <term>NOTIFYICONDATA_V1_SIZE</term>
		/// </item>
		/// </list>
		/// <para>
		/// Using this value for <c>cbSize</c> allows your application to use <c>NOTIFYICONDATA</c> in a method compatible with earlier
		/// Shell32.dll versions.
		/// </para>
		/// <para>
		/// The following code example shows version checking that can enable an application that uses the <c>guidItem</c> member to run on
		/// both Windows Vista and Windows 7. It provides a Boolean function that returns <c>TRUE</c> if the operating system is Windows 7.
		/// Unless this member returns <c>TRUE</c>, the <c>guidItem</c> member must be set to 0.
		/// </para>
		/// <para>
		/// <c>Note</c> This code is specific to the Windows 7 version number. It is expected that future versions of Windows and Windows
		/// Server will support the <c>guidItem</c> member, and at that time this code must be updated to identify later version numbers as
		/// valid as well.
		/// </para>
		/// <para>The following code example shows the use of</para>
		/// <para>LoadIconMetric</para>
		/// <para>to load an icon for use with high DPI.</para>
		/// <para>Troubleshooting</para>
		/// <para>If you are using the</para>
		/// <para>guidItem</para>
		/// <para>member to identify the icon, and that icon is not seen or some calls to</para>
		/// <para>Shell_NotifyIcon</para>
		/// <para>fail, one of the following cases is the likely cause:</para>
		/// <list type="number">
		/// <item>
		/// The NIF_GUID flag was not set in every call to Shell_NotifyIcon. Once you identify the notification icon with a GUID in one call
		/// to <c>Shell_NotifyIcon</c>, you must use that same GUID to identify the icon in any subsequent <c>Shell_NotifyIcon</c> calls that
		/// deal with that same icon.
		/// </item>
		/// <item>
		/// The binary file that contains the icon was moved. The path of the binary file is included in the registration of the icon's GUID
		/// and cannot be changed. Settings associated with the icon are preserved through an upgrade only if the file path and GUID are
		/// unchanged. If the path must be changed, the application should remove any GUID information that was added when the existing icon
		/// was registered. Once that information is removed, you can move the binary file to a new location and reregister it with a new
		/// GUID. Any settings associated with the original GUID registration will be lost.
		/// </item>
		/// </list>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/ns-shellapi-_notifyicondataa typedef struct _NOTIFYICONDATAA { DWORD
		// cbSize; HWND hWnd; UINT uID; UINT uFlags; UINT uCallbackMessage; HICON hIcon; CHAR szTip[64]; CHAR szTip[128]; DWORD dwState;
		// DWORD dwStateMask; CHAR szInfo[256]; union { UINT uTimeout; UINT uVersion; } DUMMYUNIONNAME; CHAR szInfoTitle[64]; DWORD
		// dwInfoFlags; GUID guidItem; HICON hBalloonIcon; } NOTIFYICONDATAA, *PNOTIFYICONDATAA;
		[PInvokeData("shellapi.h", MSDNShortId = "fdcc42c1-b3e5-4b04-8d79-7b6c29699d53")]
		[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
		public struct NOTIFYICONDATA
		{
			/// <summary>Size of this structure, in bytes.</summary>
			public uint cbSize;

			/// <summary>
			/// Handle to the window that receives notification messages associated with an icon in the taskbar status area. The Shell uses
			/// hWnd and uID to identify which icon to operate on when Shell_NotifyIcon is invoked.
			/// </summary>
			public HWND hwnd;

			/// <summary>
			/// Application-defined identifier of the taskbar icon. The Shell uses hWnd and uID to identify which icon to operate on when
			/// Shell_NotifyIcon is invoked. You can have multiple icons associated with a single hWnd by assigning each a different uID.
			/// </summary>
			public uint uID;

			/// <summary>
			/// Flags that indicate which of the other members contain valid data. This member can be a combination of the NIF_XXX constants.
			/// </summary>
			public NIF uFlags;

			/// <summary>
			/// Application-defined message identifier. The system uses this identifier to send notifications to the window identified in hWnd.
			/// </summary>
			public uint uCallbackMessage;

			/// <summary>Handle to the icon to be added, modified, or deleted.</summary>
			public HICON hIcon;

			/// <summary>
			/// String with the text for a standard ToolTip. It can have a maximum of 64 characters including the terminating NULL. For
			/// Version 5.0 and later, szTip can have a maximum of 128 characters, including the terminating NULL.
			/// </summary>
			[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
			public string szTip;

			/// <summary>State of the icon.</summary>
			public NIS dwState;

			/// <summary>
			/// A value that specifies which bits of the state member are retrieved or modified. For example, setting this member to
			/// NIS_HIDDEN causes only the item's hidden state to be retrieved.
			/// </summary>
			public NIS dwStateMask;

			/// <summary>
			/// String with the text for a balloon ToolTip. It can have a maximum of 255 characters. To remove the ToolTip, set the NIF_INFO
			/// flag in uFlags and set szInfo to an empty string.
			/// </summary>
			[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
			public string szInfo;

			/// <summary>
			/// NOTE: This field is also used for the Timeout value. Specifies whether the Shell notify icon interface should use Windows 95
			/// or Windows 2000 behavior. For more information on the differences in these two behaviors, see Shell_NotifyIcon. This member
			/// is only employed when using Shell_NotifyIcon to send an NIM_VERSION message.
			/// </summary>
			public int uTimeoutOrVersion;

			/// <summary>
			/// String containing a title for a balloon ToolTip. This title appears in boldface above the text. It can have a maximum of 63 characters.
			/// </summary>
			[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
			public string szInfoTitle;

			/// <summary>
			/// Adds an icon to a balloon ToolTip. It is placed to the left of the title. If the szTitleInfo member is zero-length, the icon
			/// is not shown.
			/// </summary>
			public NIIF dwInfoFlags;

			/// <summary>
			/// <para>
			/// Windows 7 and later: A registered GUID that identifies the icon.This value overrides uID and is the recommended method of
			/// identifying the icon.The NIF_GUID flag must be set in the uFlags member.
			/// </para>
			/// <para>Windows XP and Windows Vista: Reserved; must be set to 0.</para>
			/// <para>
			/// If your application is intended to run on both Windows Vista and Windows 7, it is imperative that you check the version of
			/// Windows and only specify a nonzero guidItem if on Windows 7 or later.
			/// </para>
			/// <para>
			/// If you identify the notification icon with a GUID in one call to Shell_NotifyIcon, you must use that same GUID to identify
			/// the icon in any subsequent Shell_NotifyIcon calls that deal with that same icon.
			/// </para>
			/// <para>To generate a GUID for use in this member, use a GUID-generating tool such as Guidgen.exe.</para>
			/// </summary>
			public Guid guidItem;

			/// <summary>
			/// Windows Vista and later. The handle of a customized notification icon provided by the application that should be used
			/// independently of the notification area icon. If this member is non-NULL and the NIIF_USER flag is set in the dwInfoFlags
			/// member, this icon is used as the notification icon. If this member is NULL, the legacy behavior is carried out.
			/// </summary>
			public HICON hBalloonIcon;
		}

		/// <summary>
		/// <para>Contains information used by Shell_NotifyIconGetRect to identify the icon for which to retrieve the bounding rectangle.</para>
		/// </summary>
		/// <remarks>
		/// <para>The icon can be identified to Shell_NotifyIconGetRect through this structure in two ways:</para>
		/// <list type="bullet">
		/// <item>
		/// <description>guidItem alone (recommended)</description>
		/// </item>
		/// <item>
		/// <description>hWnd plus uID</description>
		/// </item>
		/// </list>
		/// <para>If guidItem is not GUID_NULL, hWnd and uID are ignored.</para>
		/// </remarks>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/ns-shellapi-_notifyiconidentifier typedef struct
		// _NOTIFYICONIDENTIFIER { DWORD cbSize; HWND hWnd; UINT uID; GUID guidItem; } NOTIFYICONIDENTIFIER, *PNOTIFYICONIDENTIFIER;
		[PInvokeData("shellapi.h", MSDNShortId = "2fe4ffba-6fe5-4d34-9cb1-f266e4594b8e")]
		[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
		public struct NOTIFYICONIDENTIFIER
		{
			/// <summary>
			/// <para>Type: <c>DWORD</c></para>
			/// <para>The size of this structure, in bytes.</para>
			/// </summary>
			public uint cbSize;

			/// <summary>
			/// <para>Type: <c>HWND</c></para>
			/// <para>
			/// A handle to the parent window used by the notification's callback function. For more information, see the member of the
			/// NOTIFYICONDATA structure.
			/// </para>
			/// </summary>
			public HWND hWnd;

			/// <summary>
			/// <para>Type: <c>UINT</c></para>
			/// <para>
			/// The application-defined identifier of the notification icon. Multiple icons can be associated with a single , each with their
			/// own .
			/// </para>
			/// </summary>
			public uint uID;

			/// <summary>
			/// <para>Type: <c>GUID</c></para>
			/// <para>A registered GUID that identifies the icon. Use <c>GUID_NULL</c> if the icon is not identified by a GUID.</para>
			/// </summary>
			public Guid guidItem;
		}

		/// <summary>Contains information used by ShellExecuteEx.</summary>
		[StructLayout(LayoutKind.Sequential)]
		[PInvokeData("Shellapi.h", MSDNShortId = "bb759784")]
		public struct SHELLEXECUTEINFO
		{
			/// <summary>Required. The size of this structure, in bytes.</summary>
			public int cbSize;

			/// <summary>Flags that indicate the content and validity of the other structure members.</summary>
			public ShellExecuteMaskFlags fMask;

			/// <summary>
			/// Optional. A handle to the parent window, used to display any message boxes that the system might produce while executing this
			/// function. This value can be NULL.
			/// </summary>
			public HWND hwnd;

			/// <summary>
			/// A string, referred to as a verb, that specifies the action to be performed. The set of available verbs depends on the
			/// particular file or folder. Generally, the actions available from an object's shortcut menu are available verbs. This
			/// parameter can be NULL, in which case the default verb is used if available. If not, the "open" verb is used. If neither verb
			/// is available, the system uses the first verb listed in the registry. The following verbs are commonly used:
			/// <list>
			/// <item>
			/// <term>edit</term>
			/// <definition>Launches an editor and opens the document for editing.If lpFile is not a document file, the function will fail.</definition>
			/// </item>
			/// <item>
			/// <term>explore</term>
			/// <definition>Explores the folder specified by lpFile.</definition>
			/// </item>
			/// <item>
			/// <term>find</term>
			/// <definition>Initiates a search starting from the specified directory.</definition>
			/// </item>
			/// <item>
			/// <term>open</term>
			/// <definition>Opens the file specified by the lpFile parameter. The file can be an executable file, a document file, or a folder.</definition>
			/// </item>
			/// <item>
			/// <term>print</term>
			/// <definition>Prints the document file specified by lpFile.If lpFile is not a document file, the function will fail.</definition>
			/// </item>
			/// <item>
			/// <term>properties</term>
			/// <definition>Displays the file or folder's properties.</definition>
			/// </item>
			/// </list>
			/// </summary>
			[MarshalAs(UnmanagedType.LPTStr)] public string lpVerb;

			/// <summary>
			/// The address of a null-terminated string that specifies the name of the file or object on which ShellExecuteEx will perform
			/// the action specified by the lpVerb parameter. The system registry verbs that are supported by the ShellExecuteEx function
			/// include "open" for executable files and document files and "print" for document files for which a print handler has been
			/// registered. Other applications might have added Shell verbs through the system registry, such as "play" for .avi and .wav
			/// files. To specify a Shell namespace object, pass the fully qualified parse name and set the SEE_MASK_INVOKEIDLIST flag in the
			/// fMask parameter. <note>If the SEE_MASK_INVOKEIDLIST flag is set, you can use either lpFile or lpIDList to identify the item
			/// by its file system path or its PIDL respectively. One of the two values<65>lpFile or lpIDList<73>must be set.</note><note>If the
			/// path is not included with the name, the current directory is assumed.</note>
			/// </summary>
			[MarshalAs(UnmanagedType.LPTStr)] public string lpFile;

			/// <summary>
			/// Optional. The address of a null-terminated string that contains the application parameters. The parameters must be separated
			/// by spaces. If the lpFile member specifies a document file, lpParameters should be NULL.
			/// </summary>
			[MarshalAs(UnmanagedType.LPTStr)] public string lpParameters;

			/// <summary>
			/// Optional. The address of a null-terminated string that specifies the name of the working directory. If this member is NULL,
			/// the current directory is used as the working directory.
			/// </summary>
			[MarshalAs(UnmanagedType.LPTStr)] public string lpDirectory;

			/// <summary>
			/// Required. Flags that specify how an application is to be shown when it is opened; one of the SW_ values listed for the
			/// ShellExecute function. If lpFile specifies a document file, the flag is simply passed to the associated application. It is up
			/// to the application to decide how to handle it.
			/// </summary>
			public ShowWindowCommand nShellExecuteShow;

			/// <summary>
			/// [out] If SEE_MASK_NOCLOSEPROCESS is set and the ShellExecuteEx call succeeds, it sets this member to a value greater than 32.
			/// If the function fails, it is set to an SE_ERR_XXX error value that indicates the cause of the failure. Although hInstApp is
			/// declared as an HINSTANCE for compatibility with 16-bit Windows applications, it is not a true HINSTANCE. It can be cast only
			/// to an int and compared to either 32 or the following SE_ERR_XXX error codes.
			/// </summary>
			public HINSTANCE hInstApp;

			/// <summary>
			/// The address of an absolute ITEMIDLIST structure (PCIDLIST_ABSOLUTE) to contain an item identifier list that uniquely
			/// identifies the file to execute. This member is ignored if the fMask member does not include SEE_MASK_IDLIST or SEE_MASK_INVOKEIDLIST.
			/// </summary>
			public IntPtr lpIDList;

			/// <summary>
			/// The address of a null-terminated string that specifies one of the following:
			/// <list type="bullet">
			/// <item>
			/// <term>A ProgId. For example, "Paint.Picture".</term>
			/// </item>
			/// <item>
			/// <term>A URI protocol scheme. For example, "http".</term>
			/// </item>
			/// <item>
			/// <term>A file extension. For example, ".txt".</term>
			/// </item>
			/// <item>
			/// <term>
			/// A registry path under HKEY_CLASSES_ROOT that names a subkey that contains one or more Shell verbs. This key will have a
			/// subkey that conforms to the Shell verb registry schema, such as <c>shell\verb name</c>.
			/// </term>
			/// </item>
			/// </list>
			/// <para>This member is ignored if fMask does not include SEE_MASK_CLASSNAME.</para>
			/// </summary>
			[MarshalAs(UnmanagedType.LPTStr)] public string lpClass;

			/// <summary>
			/// A handle to the registry key for the file type. The access rights for this registry key should be set to KEY_READ. This
			/// member is ignored if fMask does not include SEE_MASK_CLASSKEY.
			/// </summary>
			public HKEY hkeyClass;

			/// <summary>
			/// A keyboard shortcut to associate with the application. The low-order word is the virtual key code, and the high-order word is
			/// a modifier flag (HOTKEYF_). For a list of modifier flags, see the description of the WM_SETHOTKEY message. This member is
			/// ignored if fMask does not include SEE_MASK_HOTKEY.
			/// </summary>
			public uint dwHotKey;

			/// <summary>
			/// A handle to the icon for the file type. This member is ignored if fMask does not include SEE_MASK_ICON. This value is used
			/// only in Windows XP and earlier. It is ignored as of Windows Vista.
			/// <para><c>OR</c></para>
			/// <para>
			/// A handle to the monitor upon which the document is to be displayed. This member is ignored if fMask does not include SEE_MASK_HMONITOR.
			/// </para>
			/// </summary>
			public HICON hIcon;

			/// <summary>
			/// A handle to the newly started application. This member is set on return and is always NULL unless fMask is set to
			/// SEE_MASK_NOCLOSEPROCESS. Even if fMask is set to SEE_MASK_NOCLOSEPROCESS, hProcess will be NULL if no process was launched.
			/// For example, if a document to be launched is a URL and an instance of Internet Explorer is already running, it will display
			/// the document. No new process is launched, and hProcess will be NULL. <note>ShellExecuteEx does not always return an hProcess,
			/// even if a process is launched as the result of the call. For example, an hProcess does not return when you use
			/// SEE_MASK_INVOKEIDLIST to invoke IContextMenu.</note>
			/// </summary>
			public HPROCESS hProcess;

			/// <summary>Initializes a new instance of the <see cref="SHELLEXECUTEINFO"/> struct.</summary>
			/// <param name="fileName">Name of the file.</param>
			/// <param name="parameters">The parameters.</param>
			public SHELLEXECUTEINFO(string fileName, string parameters = null) : this()
			{
				cbSize = Marshal.SizeOf(this);
				lpFile = fileName;
				lpParameters = parameters;
				nShellExecuteShow = ShowWindowCommand.SW_NORMAL;
			}
		}

		/// <summary>Contains information about a file object.</summary>
		[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
		[PInvokeData("Shellapi.h", MSDNShortId = "bb759792")]
		public struct SHFILEINFO
		{
			/// <summary>
			/// A handle to the icon that represents the file. You are responsible for destroying this handle with DestroyIcon when you no
			/// longer need it.
			/// </summary>
			public HICON hIcon;

			/// <summary>The index of the icon image within the system image list.</summary>
			public int iIcon;

			/// <summary>
			/// An array of values that indicates the attributes of the file object. For information about these values, see the
			/// IShellFolder::GetAttributesOf method.
			/// </summary>
			public int dwAttributes;

			/// <summary>
			/// A string that contains the name of the file as it appears in the Windows Shell, or the path and file name of the file that
			/// contains the icon representing the file.
			/// </summary>
			[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)] public string szDisplayName;

			/// <summary>A string that describes the type of file.</summary>
			[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)] public string szTypeName;

			/// <summary>Gets the size of this structure.</summary>
			/// <value>The structure size in bytes.</value>
			public static int Size => Marshal.SizeOf(typeof(SHFILEINFO));
		}

		/// <summary>Contains information that the SHFileOperation function uses to perform file operations.</summary>
		[PInvokeData("Shellapi.h")]
		[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
		public struct SHFILEOPSTRUCT
		{
			/// <summary>A window handle to the dialog box to display information about the status of the file operation.</summary>
			public HWND hwnd;

			/// <summary>A value that indicates which operation to perform.</summary>
			public ShellFileOperation wFunc;

			/// <summary>
			/// <note type="note">This string must be double-null terminated.</note>
			/// <para>A pointer to one or more source file names.These names should be fully qualified paths to prevent unexpected results.</para>
			/// <para>
			/// Standard MS-DOS wildcard characters, such as "*", are permitted only in the file-name position.Using a wildcard character
			/// elsewhere in the string will lead to unpredictable results.
			/// </para>
			/// <para>
			/// Although this member is declared as a single null-terminated string, it is actually a buffer that can hold multiple
			/// null-delimited file names.Each file name is terminated by a single NULL character. The last file name is terminated with a
			/// double NULL character ("\0\0") to indicate the end of the buffer.
			/// </para>
			/// </summary>
			[MarshalAs(UnmanagedType.LPTStr)]
			public string pFrom;

			/// <summary>
			/// <note type="note">This string must be double-null terminated.</note>
			/// <para>
			/// A pointer to the destination file or directory name. This parameter must be set to NULL if it is not used. Wildcard
			/// characters are not allowed. Their use will lead to unpredictable results.
			/// </para>
			/// <para>
			/// Like pFrom, the pTo member is also a double-null terminated string and is handled in much the same way. However, pTo must
			/// meet the following specifications:
			/// </para>
			/// <list type="bullet">
			/// <item>
			/// <description>Wildcard characters are not supported.</description>
			/// </item>
			/// <item>
			/// <description>
			/// Copy and Move operations can specify destination directories that do not exist. In those cases, the system attempts to create
			/// them and normally displays a dialog box to ask the user if they want to create the new directory. To suppress this dialog box
			/// and have the directories created silently, set the FOF_NOCONFIRMMKDIR flag in fFlags.
			/// </description>
			/// </item>
			/// <item>
			/// <description>
			/// For Copy and Move operations, the buffer can contain multiple destination file names if the fFlags member specifies FOF_MULTIDESTFILES.
			/// </description>
			/// </item>
			/// <item>
			/// <description>Pack multiple names into the pTo string in the same way as for pFrom.</description>
			/// </item>
			/// <item>
			/// <description>Use fully qualified paths. Using relative paths is not prohibited, but can have unpredictable results.</description>
			/// </item>
			/// </list>
			/// </summary>
			[MarshalAs(UnmanagedType.LPTStr)]
			public string pTo;

			/// <summary>Flags that control the file operation.</summary>
			public FILEOP_FLAGS fFlags;

			/// <summary>
			/// When the function returns, this member contains TRUE if any file operations were aborted before they were completed;
			/// otherwise, FALSE. An operation can be manually aborted by the user through UI or it can be silently aborted by the system if
			/// the FOF_NOERRORUI or FOF_NOCONFIRMATION flags were set.
			/// </summary>
			[MarshalAs(UnmanagedType.Bool)]
			public bool fAnyOperationsAborted;

			/// <summary>
			/// When the function returns, this member contains a handle to a name mapping object that contains the old and new names of the
			/// renamed files. This member is used only if the fFlags member includes the FOF_WANTMAPPINGHANDLE flag. See Remarks for more details.
			/// </summary>
			public IntPtr hNameMappings;

			/// <summary>
			/// A pointer to the title of a progress dialog box. This is a null-terminated string. This member is used only if fFlags
			/// includes the FOF_SIMPLEPROGRESS flag.
			/// </summary>
			[MarshalAs(UnmanagedType.LPTStr)]
			public string lpszProgressTitle;
		}

		/// <summary>
		/// <para>Contains the size and item count information retrieved by the SHQueryRecycleBin function.</para>
		/// </summary>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/ns-shellapi-_shqueryrbinfo typedef struct _SHQUERYRBINFO { DWORD
		// cbSize; __int64 i64Size; __int64 i64NumItems; DWORDLONG i64Size; DWORDLONG i64NumItems; } SHQUERYRBINFO, *LPSHQUERYRBINFO;
		[PInvokeData("shellapi.h", MSDNShortId = "7e9bc7e9-5712-45e7-a424-0afb62f26450")]
		[StructLayout(LayoutKind.Sequential)]
		public struct SHQUERYRBINFO
		{
			/// <summary>The size of the structure, in bytes. This member must be filled in prior to calling the function.</summary>
			public uint cbSize;

			/// <summary>The total size, in bytes, of all the items currently in the Recycle Bin.</summary>
			public long i64Size;

			/// <summary>The total number of items currently in the Recycle Bin.</summary>
			public long i64NumItems;
		}

		/// <summary>
		/// <para>Receives information used to retrieve a stock Shell icon. This structure is used in a call SHGetStockIconInfo.</para>
		/// </summary>
		// https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/ns-shellapi-_shstockiconinfo typedef struct _SHSTOCKICONINFO { DWORD
		// cbSize; HICON hIcon; int iSysImageIndex; int iIcon; WCHAR szPath[MAX_PATH]; } SHSTOCKICONINFO;
		[PInvokeData("shellapi.h", MSDNShortId = "4d32826a-bb40-4805-9826-801c142b8d28")]
		[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
		public struct SHSTOCKICONINFO
		{
			/// <summary>
			/// <para>Type: <c>DWORD</c></para>
			/// <para>The size of this structure, in bytes.</para>
			/// </summary>
			public uint cbSize;

			/// <summary>
			/// <para>Type: <c>HICON</c></para>
			/// <para>When SHGetStockIconInfo is called with the SHGSI_ICON flag, this member receives a handle to the icon.</para>
			/// </summary>
			public HICON hIcon;

			/// <summary>
			/// <para>Type: <c>int</c></para>
			/// <para>
			/// When SHGetStockIconInfo is called with the SHGSI_SYSICONINDEX flag, this member receives the index of the image in the system
			/// icon cache.
			/// </para>
			/// </summary>
			public int iSysImageIndex;

			/// <summary>
			/// <para>Type: <c>int</c></para>
			/// <para>
			/// When SHGetStockIconInfo is called with the SHGSI_ICONLOCATION flag, this member receives the index of the icon in the
			/// resource whose path is received in <c>szPath</c>.
			/// </para>
			/// </summary>
			public int iIcon;

			/// <summary>
			/// <para>Type: <c>WCHAR[MAX_PATH]</c></para>
			/// <para>
			/// When SHGetStockIconInfo is called with the SHGSI_ICONLOCATION flag, this member receives the path of the resource that
			/// contains the icon. The index of the icon within the resource is received in <c>iIcon</c>.
			/// </para>
			/// </summary>
			[MarshalAs(UnmanagedType.ByValTStr, SizeConst = MAX_PATH)]
			public string szPath;
		}
	}
}