Updated SendMessage dependencies in ListView code

PInvoke/ComCtl32/CommCtrl.ListView.cs

@@ -1188,8 +1188,8 @@ namespace Vanara.PInvoke
 		[PInvokeData("commctrl.h", MSDNShortId = "listview_getitemindexrect")]
 		public static bool ListView_GetItemIndexRect(HWND hwnd, in LVITEMINDEX plvii, int iSubItem, ListViewItemRect code, out Rectangle prc)
 		{
-			var rc = new PRECT((int)code, iSubItem, 0, 0);
-			var lr = SendMessage(hwnd, ListViewMessage.LVM_GETITEMINDEXRECT, plvii, rc);
+			var rc = new RECT((int)code, iSubItem, 0, 0);
+			var lr = SendMessage(hwnd, ListViewMessage.LVM_GETITEMINDEXRECT, in plvii, ref rc);
 			prc = lr == IntPtr.Zero ? Rectangle.Empty : (Rectangle)rc;
 			return lr != IntPtr.Zero;
 		}
@@ -1340,8 +1340,12 @@ namespace Vanara.PInvoke
 		// https://docs.microsoft.com/en-us/windows/desktop/api/commctrl/nf-commctrl-listview_setitemindexstate void
 		// ListView_SetItemIndexState( hwndLV, plvii, data, mask );
 		[PInvokeData("commctrl.h", MSDNShortId = "listview_setitemindexstate")]
-		public static HRESULT ListView_SetItemIndexState(HWND hwndLV, in LVITEMINDEX plvii, uint data, ListViewItemState mask) =>
-			new HRESULT(SendMessage(hwndLV, (uint)ListViewMessage.LVM_SETITEMINDEXSTATE, in plvii, new LVITEM(0) { stateMask = mask, state = data }).ToInt32());
+		public static HRESULT ListView_SetItemIndexState(HWND hwndLV, in LVITEMINDEX plvii, uint data, ListViewItemState mask)
+		{
+			var lvi = new LVITEM(0) { stateMask = mask, state = data };
+			using var plvi = new PinnedObject(lvi);
+			return new HRESULT(SendMessage(hwndLV, (uint)ListViewMessage.LVM_SETITEMINDEXSTATE, in plvii, plvi).ToInt32());
+		}
 
 		/// <summary>
 		/// Contains information used when searching for a list-view item. This structure is identical to LV_FINDINFO but has been renamed

PInvoke/User32/WinUser.Message.cs

@@ -2448,6 +2448,81 @@ namespace Vanara.PInvoke
 			where TMsg : struct, IConvertible where TWP : struct, IConvertible
 			=> SendMessage(hWnd, Convert.ToUInt32(msg), (IntPtr)Convert.ToInt64(wParam), IntPtr.Zero);
 
+		/// <summary>
+		/// <para>
+		/// Sends the specified message to a window or windows. The <c>SendMessage</c> function calls the window procedure for the specified
+		/// window and does not return until the window procedure has processed the message.
+		/// </para>
+		/// <para>
+		/// To send a message and return immediately, use the SendMessageCallback or SendNotifyMessage function. To post a message to a
+		/// thread's message queue and return immediately, use the PostMessage or PostThreadMessage function.
+		/// </para>
+		/// </summary>
+		/// <typeparam name="TMsg">The type of the message. This can be any type that converts to <see cref="uint"/>.</typeparam>
+		/// <typeparam name="TWP">The type of the <paramref name="wParam"/> parameter. This must be a type that can be marshaled to memory.</typeparam>
+		/// <param name="hWnd">
+		/// <para>Type: <c>HWND</c></para>
+		/// <para>
+		/// A handle to the window whose window procedure will receive the message. If this parameter is <c>HWND_BROADCAST</c>
+		/// ((HWND)0xffff), the message is sent to all top-level windows in the system, including disabled or invisible unowned windows,
+		/// overlapped windows, and pop-up windows; but the message is not sent to child windows.
+		/// </para>
+		/// <para>
+		/// Message sending is subject to UIPI. The thread of a process can send messages only to message queues of threads in processes of
+		/// lesser or equal integrity level.
+		/// </para>
+		/// </param>
+		/// <param name="msg">
+		/// <para>Type: <c>UINT</c></para>
+		/// <para>The message to be sent.</para>
+		/// <para>For lists of the system-provided messages, see System-Defined Messages.</para>
+		/// </param>
+		/// <param name="wParam">
+		/// <para>Type: <c>WPARAM</c></para>
+		/// <para>Additional message-specific information.</para>
+		/// </param>
+		/// <param name="lParam">
+		/// <para>Type: <c>LPARAM</c></para>
+		/// <para>Additional message-specific information.</para>
+		/// </param>
+		/// <returns>
+		/// <para>Type: <c>LRESULT</c></para>
+		/// <para>The return value specifies the result of the message processing; it depends on the message sent.</para>
+		/// </returns>
+		/// <remarks>
+		/// <para>When a message is blocked by UIPI the last error, retrieved with GetLastError, is set to 5 (access denied).</para>
+		/// <para>
+		/// Applications that need to communicate using <c>HWND_BROADCAST</c> should use the RegisterWindowMessage function to obtain a
+		/// unique message for inter-application communication.
+		/// </para>
+		/// <para>
+		/// The system only does marshalling for system messages (those in the range 0 to (WM_USER-1)). To send other messages (those &gt;=
+		/// <c>WM_USER</c>) to another process, you must do custom marshalling.
+		/// </para>
+		/// <para>
+		/// If the specified window was created by the calling thread, the window procedure is called immediately as a subroutine. If the
+		/// specified window was created by a different thread, the system switches to that thread and calls the appropriate window
+		/// procedure. Messages sent between threads are processed only when the receiving thread executes message retrieval code. The
+		/// sending thread is blocked until the receiving thread processes the message. However, the sending thread will process incoming
+		/// nonqueued messages while waiting for its message to be processed. To prevent this, use SendMessageTimeout with SMTO_BLOCK set.
+		/// For more information on nonqueued messages, see Nonqueued Messages.
+		/// </para>
+		/// <para>
+		/// An accessibility application can use <c>SendMessage</c> to send WM_APPCOMMAND messages to the shell to launch applications. This
+		/// functionality is not guaranteed to work for other types of applications.
+		/// </para>
+		/// <para>Examples</para>
+		/// <para>For an example, see Displaying Keyboard Input.</para>
+		/// </remarks>
+		// https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-sendmessage
+		[PInvokeData("winuser.h", MSDNShortId = "NF:winuser.SendMessage")]
+		public static IntPtr SendMessage<TMsg, TWP>(HWND hWnd, TMsg msg, in TWP wParam, [Optional] IntPtr lParam)
+			where TMsg : struct, IConvertible where TWP : struct
+		{
+			using var wmem = SafeCoTaskMemHandle.CreateFromStructure(wParam);
+			return SendMessage(hWnd, Convert.ToUInt32(msg), wmem, lParam);
+		}
+
 		/// <summary>
 		/// <para>
 		/// Sends the specified message to a window or windows. The <c>SendMessage</c> function calls the window procedure for the specified