mirror of https://github.com/dahall/Vanara.git
Incomplete work on ShellDataObject
dahall
parent
4ef43cf843
commit
61c26627b5
|
|
@ -1,80 +1,412 @@
|
|||
using System;
|
||||
using System.Collections.Generic;
|
||||
using System.Collections.Specialized;
|
||||
using System.Drawing;
|
||||
using System.IO;
|
||||
using System.Linq;
|
||||
using System.Runtime.InteropServices;
|
||||
using System.Runtime.InteropServices.ComTypes;
|
||||
using System.Text;
|
||||
using System.Windows.Forms;
|
||||
using Vanara.Extensions;
|
||||
using Vanara.InteropServices;
|
||||
using Vanara.PInvoke;
|
||||
using static Vanara.PInvoke.Ole32;
|
||||
using static Vanara.PInvoke.Shell32;
|
||||
using IComDataObject = System.Runtime.InteropServices.ComTypes.IDataObject;
|
||||
|
||||
namespace Vanara.Windows.Shell
|
||||
{
|
||||
// TODO
|
||||
internal static class DataObjectExtensions
|
||||
/// <summary>Shell extended <see cref="DataObject"/>.</summary>
|
||||
// TODO: Finish adding ShellClipboardFormat handling, tests and release
|
||||
class ShellDataObject : DataObject
|
||||
{
|
||||
public static IReadOnlyList<string> GetFileNameMap(this DataObject dobj)
|
||||
/// <summary>Initializes a new instance of the <see cref="ShellDataObject"/> class.</summary>
|
||||
public ShellDataObject() : base()
|
||||
{
|
||||
var l = new List<string>();
|
||||
if (dobj.GetDataPresent(ShellDataFormat.FileNameMap.Id()))
|
||||
{
|
||||
if (dobj.GetData(ShellDataFormat.FileNameMap.Id(), true) is string[] data)
|
||||
l.AddRange(data);
|
||||
}
|
||||
return (IReadOnlyList<string>)l;
|
||||
}
|
||||
|
||||
public static DROPEFFECT GetPreferredDropEffect(this DataObject dobj)
|
||||
/// <summary>Initializes a new instance of the <see cref="ShellDataObject"/> class and adds the specified object to it.</summary>
|
||||
/// <param name="data">The data to store.</param>
|
||||
public ShellDataObject(object data) : base(data)
|
||||
{
|
||||
dobj.GetData(typeof(uint));
|
||||
var eff = DROPEFFECT.DROPEFFECT_NONE;
|
||||
if (dobj is IComDataObject cdo)
|
||||
{
|
||||
var fc = MakeFORMATETC(ShellClipboardFormat.CFSTR_PREFERREDDROPEFFECT);
|
||||
try
|
||||
{
|
||||
cdo.GetData(ref fc, out var medium);
|
||||
if (medium.unionmember != default)
|
||||
eff = (DROPEFFECT)medium.unionmember.ToStructure<uint>();
|
||||
ReleaseStgMedium(medium);
|
||||
}
|
||||
catch { }
|
||||
}
|
||||
return eff;
|
||||
}
|
||||
|
||||
public static IReadOnlyCollection<PIDL> GetShellIdList(this DataObject dobj)
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the <see cref="ShellDataObject"/> class and adds the specified object in the specified format.
|
||||
/// </summary>
|
||||
/// <param name="format">
|
||||
/// The format of the specified data. See <see cref="T:System.Windows.Forms.DataFormats"/> for predefined formats.
|
||||
/// </param>
|
||||
/// <param name="data">The data to store.</param>
|
||||
public ShellDataObject(string format, object data) : base(format, data)
|
||||
{
|
||||
var l = new List<PIDL>();
|
||||
if (dobj is IComDataObject cdo)
|
||||
}
|
||||
|
||||
/// <summary>This format identifier is used by a data object to indicate whether it is in a drag-and-drop loop.</summary>
|
||||
/// <remarks>
|
||||
/// Some drop targets might call IDataObject::GetData and attempt to extract data while the object is still within the drag-and-drop
|
||||
/// loop. Fully rendering the object for each such occurrence might cause the drag cursor to stall. If the data object supports
|
||||
/// CFSTR_INDRAGLOOP, the target can instead use that format to check the status of the drag-and-drop loop and avoid memory
|
||||
/// intensive rendering of the object until it is actually dropped. The formats that are memory intensive to render should still be
|
||||
/// included in the FORMATETC enumerator and in calls to IDataObject::QueryGetData. If the data object does not set
|
||||
/// CFSTR_INDRAGLOOP, it should act as if the value is set to zero.
|
||||
/// </remarks>
|
||||
/// <value><see langword="true"/> if the data object is within a drag-and-drop loop; otherwise, <see langword="false"/>.</value>
|
||||
public bool InDragLoop
|
||||
{
|
||||
get => base.GetData(ShellClipboardFormat.CFSTR_INDRAGLOOP) is int i && i != 0;
|
||||
set => base.SetData(ShellClipboardFormat.CFSTR_INDRAGLOOP, value ? 1 : 0);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// <para>
|
||||
/// This value is used by a drop source to specify whether its preferred method of data transfer is move or copy. A drop target
|
||||
/// requests this format by calling the data object's IDataObject::GetData method. This value is set to <see
|
||||
/// cref="DragDropEffects.Move"/> if a move operation is preferred or <see cref="DragDropEffects.Copy"/> if a copy operation is preferred.
|
||||
/// </para>
|
||||
/// <para>
|
||||
/// This feature is used when a source can support either a move or copy operation. It uses the CFSTR_PREFERREDDROPEFFECT format to
|
||||
/// communicate its preference to the target. Because the target is not obligated to honor the request, the target must call the
|
||||
/// source's IDataObject::SetData method with a CFSTR_PERFORMEDDROPEFFECT format to tell the data object which operation was
|
||||
/// actually performed.
|
||||
/// </para>
|
||||
/// <para>
|
||||
/// With a delete-on-paste operation, the CFSTR_PREFERREDDROPFORMAT format is used to tell the target whether the source did a cut
|
||||
/// or copy. With a drag-and-drop operation, you can use CFSTR_PREFERREDDROPFORMAT to specify the Shell's action. If this format is
|
||||
/// not present, the Shell performs a default action, based on context. For instance, if a user drags a file from one volume and
|
||||
/// drops it on another volume, the Shell's default action is to copy the file. By including a CFSTR_PREFERREDDROPFORMAT format in
|
||||
/// the data object, you can override the default action and explicitly tell the Shell to copy, move, or link the file. If the user
|
||||
/// chooses to drag with the right button, CFSTR_PREFERREDDROPFORMAT specifies the default command on the drag-and-drop shortcut
|
||||
/// menu. The user is still free to choose other commands on the menu.
|
||||
/// </para>
|
||||
/// <para>
|
||||
/// Before Microsoft Internet Explorer 4.0, an application indicated that it was transferring shortcut file types by setting
|
||||
/// FD_LINKUI in the dwFlags member of the FILEDESCRIPTOR structure. Targets then had to use a potentially time-consuming call to
|
||||
/// IDataObject::GetData to find out if the FD_LINKUI flag was set. Now, the preferred way to indicate that shortcuts are being
|
||||
/// transferred is to use the CFSTR_PREFERREDDROPEFFECT format set to DROPEFFECT_LINK. However, for backward compatibility with
|
||||
/// older systems, sources should still set the FD_LINKUI flag.
|
||||
/// </para>
|
||||
/// </summary>
|
||||
/// <value>Specifies whether its preferred method of data transfer is move or copy.</value>
|
||||
public DragDropEffects PreferredDropEffect
|
||||
{
|
||||
get => base.GetData(ShellClipboardFormat.CFSTR_PREFERREDDROPEFFECT) is int i ? (DragDropEffects)i : 0;
|
||||
set => base.SetData(ShellClipboardFormat.CFSTR_PREFERREDDROPEFFECT, (int)value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// <para>This format identifier is used by a target to provide its CLSID to the source.</para>
|
||||
/// <para>
|
||||
/// This format is used primarily to allow objects to be deleted by dragging them to the Recycle Bin. When an object is dropped in
|
||||
/// the Recycle Bin, the source's IDataObject::SetData method is called with a CFSTR_TARGETCLSID format set to the Recycle Bin's
|
||||
/// CLSID (CLSID_RecycleBin). The source can then delete the original object.
|
||||
/// </para>
|
||||
/// </summary>
|
||||
/// <value>The CLSID.</value>
|
||||
public Guid TargetClsid
|
||||
{
|
||||
get => base.GetData(ShellClipboardFormat.CFSTR_TARGETCLSID) is Guid g ? g : default;
|
||||
set => base.SetData(ShellClipboardFormat.CFSTR_TARGETCLSID, value);
|
||||
}
|
||||
|
||||
/// <inheritdoc/>
|
||||
public override object GetData(string format, bool autoConvert)
|
||||
{
|
||||
var obj = base.GetData(format);
|
||||
switch (format)
|
||||
{
|
||||
var fc = MakeFORMATETC(ShellClipboardFormat.CFSTR_SHELLIDLIST);
|
||||
try
|
||||
{
|
||||
cdo.GetData(ref fc, out var medium);
|
||||
if (medium.unionmember != default)
|
||||
case ShellClipboardFormat.CFSTR_FILEDESCRIPTORA:
|
||||
case ShellClipboardFormat.CFSTR_FILEDESCRIPTORW:
|
||||
//override the default handling of FileGroupDescriptor which returns a
|
||||
//MemoryStream and instead return a string array of file names
|
||||
|
||||
// Pick format based on CharSet.Auto size
|
||||
format = StringHelper.GetCharSize() == 1 ? ShellClipboardFormat.CFSTR_FILEDESCRIPTORA : ShellClipboardFormat.CFSTR_FILEDESCRIPTORW;
|
||||
|
||||
// Get the FileGroupDescriptor as a MemoryStream
|
||||
var fileGroupDescriptorStream = (MemoryStream)base.GetData(format, autoConvert);
|
||||
var fileGroupDescriptorBytes = new byte[fileGroupDescriptorStream.Length];
|
||||
fileGroupDescriptorStream.Read(fileGroupDescriptorBytes, 0, fileGroupDescriptorBytes.Length);
|
||||
fileGroupDescriptorStream.Close();
|
||||
|
||||
// copy the file group descriptor into unmanaged memory
|
||||
using (var fileGroupDescriptorAPointer = new SafeHGlobalHandle(fileGroupDescriptorBytes))
|
||||
{
|
||||
var cnt = (int)medium.unionmember.ToStructure<uint>() + 1;
|
||||
foreach (var offset in medium.unionmember.Offset(sizeof(uint)).ToArray<uint>(cnt))
|
||||
l.Add(new PIDL(medium.unionmember.Offset(offset), true));
|
||||
Marshal.Copy(fileGroupDescriptorBytes, 0, fileGroupDescriptorAPointer, fileGroupDescriptorBytes.Length);
|
||||
|
||||
//marshal the unmanaged memory to to FILEGROUPDESCRIPTOR struct
|
||||
var fileGroupDescriptor = fileGroupDescriptorAPointer.ToStructure<FILEGROUPDESCRIPTOR>();
|
||||
|
||||
// Extract and return filenames from each FILEDESCRIPTOR
|
||||
return fileGroupDescriptor.Select(fd => new ShellFileDescriptor(fd)).ToArray();
|
||||
}
|
||||
ReleaseStgMedium(medium);
|
||||
}
|
||||
catch { }
|
||||
|
||||
case ShellClipboardFormat.CFSTR_FILECONTENTS:
|
||||
//override the default handling of FileContents which returns the
|
||||
//contents of the first file as a memory stream and instead return
|
||||
//a array of MemoryStreams containing the data to each file dropped
|
||||
|
||||
//get the array of filenames which lets us know how many file contents exist
|
||||
var fileContentNames = (string[])GetData(ShellClipboardFormat.CFSTR_FILEDESCRIPTORA);
|
||||
|
||||
//create a MemoryStream array to store the file contents
|
||||
var fileContents = new MemoryStream[fileContentNames.Length];
|
||||
|
||||
//loop for the number of files acording to the file names
|
||||
for (var fileIndex = 0; fileIndex < fileContentNames.Length; fileIndex++)
|
||||
{
|
||||
//get the data at the file index and store in array
|
||||
fileContents[fileIndex] = GetData(format, fileIndex) as MemoryStream;
|
||||
}
|
||||
|
||||
//return array of MemoryStreams containing file contents
|
||||
return fileContents;
|
||||
}
|
||||
return (IReadOnlyList<PIDL>)l;
|
||||
//if (format == DataFormats.FileDrop && (int)base.GetData(ShellClipboardFormat.CFSTR_INDRAGLOOP) != 0 && obj is StringCollection s)
|
||||
//{
|
||||
//}
|
||||
return obj;
|
||||
}
|
||||
|
||||
public static void SetTargetClsid(this DataObject dobj, in Guid clsid) => dobj.SetData(ShellClipboardFormat.CFSTR_TARGETCLSID, clsid);
|
||||
|
||||
internal static FORMATETC MakeFORMATETC(string fmt, TYMED tymed = TYMED.TYMED_HGLOBAL) => new FORMATETC
|
||||
/// <summary>Retrieves the data associated with the specified data format at the specified index.</summary>
|
||||
/// <param name="format">
|
||||
/// The format of the data to retrieve. See <see cref="T:System.Windows.Forms.DataFormats"></see> for predefined formats.
|
||||
/// </param>
|
||||
/// <param name="index">The index of the data to retrieve.</param>
|
||||
/// <returns>An object containing the raw data for the specified data format at the specified index.</returns>
|
||||
public object GetData(string format, int index)
|
||||
{
|
||||
cfFormat = (short)GetFormat(fmt).Id,
|
||||
dwAspect = DVASPECT.DVASPECT_CONTENT,
|
||||
lindex = -1,
|
||||
tymed = tymed
|
||||
};
|
||||
//create a FORMATETC struct to request the data with
|
||||
var formatetc = new FORMATETC
|
||||
{
|
||||
cfFormat = (short)DataFormats.GetFormat(format).Id,
|
||||
dwAspect = DVASPECT.DVASPECT_CONTENT,
|
||||
lindex = index,
|
||||
ptd = new IntPtr(0),
|
||||
tymed = TYMED.TYMED_ISTREAM | TYMED.TYMED_ISTORAGE | TYMED.TYMED_HGLOBAL
|
||||
};
|
||||
|
||||
//using the Com IDataObject interface get the data using the defined FORMATETC
|
||||
((IComDataObject)this).GetData(ref formatetc, out var medium);
|
||||
|
||||
//retrieve the data depending on the returned store type
|
||||
switch (medium.tymed)
|
||||
{
|
||||
case TYMED.TYMED_ISTORAGE:
|
||||
//to handle a IStorage it needs to be written into a second unmanaged
|
||||
//memory mapped storage and then the data can be read from memory into
|
||||
//a managed byte and returned as a MemoryStream
|
||||
{
|
||||
//marshal the returned pointer to a IStorage object
|
||||
using var pStorage = ComReleaserFactory.Create((IStorage)Marshal.GetObjectForIUnknown(medium.unionmember));
|
||||
Marshal.Release(medium.unionmember);
|
||||
|
||||
//create a ILockBytes (unmanaged byte array) and then create a IStorage using the byte array as a backing store
|
||||
CreateILockBytesOnHGlobal(IntPtr.Zero, true, out var iLockBytes).ThrowIfFailed();
|
||||
using var pLockBytes = ComReleaserFactory.Create(iLockBytes);
|
||||
StgCreateDocfileOnILockBytes(iLockBytes, STGM.STGM_CREATE | STGM.STGM_WRITE | STGM.STGM_READWRITE, default, out var iStorage2).ThrowIfFailed();
|
||||
using var pStorage2 = ComReleaserFactory.Create(iStorage2);
|
||||
|
||||
//copy the returned IStorage into the new IStorage
|
||||
pStorage.Item.CopyTo(0, null, IntPtr.Zero, iStorage2);
|
||||
iLockBytes.Flush();
|
||||
iStorage2.Commit(0);
|
||||
|
||||
//get the STATSTG of the ILockBytes to determine how many bytes were written to it
|
||||
iLockBytes.Stat(out var iLockBytesStat, STATFLAG.STATFLAG_NONAME);
|
||||
|
||||
//read the data from the ILockBytes (unmanaged byte array) into a managed byte array
|
||||
using var iLockBytesContent = new SafeHGlobalHandle(iLockBytesStat.cbSize);
|
||||
iLockBytes.ReadAt(0, iLockBytesContent, iLockBytesContent.Size, out _);
|
||||
|
||||
//wrapped the managed byte array into a memory stream and return it
|
||||
return new MemoryStream(iLockBytesContent.GetBytes(0, iLockBytesContent.Size));
|
||||
}
|
||||
|
||||
case TYMED.TYMED_ISTREAM:
|
||||
//to handle a IStream it needs to be read into a managed byte and
|
||||
//returned as a MemoryStream
|
||||
{
|
||||
//marshal the returned pointer to a IStream object
|
||||
using var pStream = ComReleaserFactory.Create((IStream)Marshal.GetObjectForIUnknown(medium.unionmember));
|
||||
Marshal.Release(medium.unionmember);
|
||||
|
||||
//get the STATSTG of the IStream to determine how many bytes are in it
|
||||
pStream.Item.Stat(out var iStreamStat, 0);
|
||||
|
||||
//read the data from the IStream into a managed byte array
|
||||
var iStreamContent = new byte[((int)iStreamStat.cbSize)];
|
||||
pStream.Item.Read(iStreamContent, iStreamContent.Length, IntPtr.Zero);
|
||||
|
||||
//wrapped the managed byte array into a memory stream and return it
|
||||
return new MemoryStream(iStreamContent);
|
||||
}
|
||||
|
||||
case TYMED.TYMED_HGLOBAL:
|
||||
//to handle a HGlobal the exisitng "GetDataFromHGLOBLAL" method is invoked via
|
||||
//reflection
|
||||
return GetObjectFromHGlobal(DataFormats.GetFormat(formatetc.cfFormat).Name, medium.unionmember);
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// This is used when a group of files in CF_HDROP format is being renamed as well as transferred. The data consists of an STGMEDIUM
|
||||
/// structure that contains a global memory object. The structure's hGlobal member points to a double null-terminated character
|
||||
/// array. This array contains a new name for each file, in the same order that the files are listed in the accompanying CF_HDROP
|
||||
/// format. The format of the character array is the same as that used by CF_HDROP to list the transferred files.
|
||||
/// </summary>
|
||||
/// <returns>A list of strings containing a name for each file.</returns>
|
||||
public string[] GetFileNameMap()
|
||||
{
|
||||
if (GetDataPresent(ShellClipboardFormat.CFSTR_FILENAMEMAPW) && GetData(ShellClipboardFormat.CFSTR_FILENAMEMAPW, true) is StringCollection dataw)
|
||||
return dataw.Cast<string>().ToArray();
|
||||
else if (GetDataPresent(ShellClipboardFormat.CFSTR_FILENAMEMAPA) && GetData(ShellClipboardFormat.CFSTR_FILENAMEMAPA, true) is StringCollection data)
|
||||
return data.Cast<string>().ToArray();
|
||||
return new string[0];
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// <para>
|
||||
/// This format identifier is used when transferring the locations of one or more existing namespace objects. It is used in much the
|
||||
/// same way as CF_HDROP, but it contains PIDLs instead of file system paths. Using PIDLs allows the CFSTR_SHELLIDLIST format to
|
||||
/// handle virtual objects as well as file system objects. The data is an STGMEDIUM structure that contains a global memory object.
|
||||
/// The structure's hGlobal member points to a CIDA structure.
|
||||
/// </para>
|
||||
/// <para>
|
||||
/// The aoffset member of the CIDA structure is an array containing offsets to the beginning of the ITEMIDLIST structure for each
|
||||
/// PIDL that is being transferred. To extract a particular PIDL, first determine its index. Then, add the aoffset value that
|
||||
/// corresponds to that index to the address of the CIDA structure.
|
||||
/// </para>
|
||||
/// <para>
|
||||
/// The first element of aoffset contains an offset to the fully qualified PIDL of a parent folder. If this PIDL is empty, the
|
||||
/// parent folder is the desktop. Each of the remaining elements of the array contains an offset to one of the PIDLs to be
|
||||
/// transferred. All of these PIDLs are relative to the PIDL of the parent folder.
|
||||
/// </para>
|
||||
/// <para>
|
||||
/// The following two macros can be used to retrieve PIDLs from a CIDA structure. The first takes a pointer to the structure and
|
||||
/// retrieves the PIDL of the parent folder. The second takes a pointer to the structure and retrieves one of the other PIDLs,
|
||||
/// identified by its zero-based index.
|
||||
/// </para>
|
||||
/// <code lang="cpp">#define GetPIDLFolder(pida) (LPCITEMIDLIST)(((LPBYTE)pida)+(pida)->aoffset[0])
|
||||
///#define GetPIDLItem(pida, i) (LPCITEMIDLIST)(((LPBYTE)pida)+(pida)->aoffset[i+1])</code>
|
||||
/// <note type="note">The value that is returned by these macros is a pointer to the PIDL's ITEMIDLIST structure. Since these
|
||||
/// structures vary in length, you must determine the end of the structure by walking through each of the ITEMIDLIST structure's
|
||||
/// SHITEMID structures until you reach the two-byte NULL that marks the end.</note>
|
||||
/// </summary>
|
||||
/// <returns>A list of strings containing a name for each file.</returns>
|
||||
public PIDL[] GetShellIdList() => GetComData(ShellClipboardFormat.CFSTR_SHELLIDLIST,
|
||||
p => Array.ConvertAll(p.Offset(sizeof(uint)).ToArray<uint>((int)p.ToStructure<uint>() + 1), u => new PIDL(p.Offset(u), true)), new PIDL[0]);
|
||||
|
||||
private static DataFormats.Format GetFormat(string format) => DataFormats.GetFormat(format);
|
||||
|
||||
private T GetComData<T>(string fmt, Func<IntPtr, T> convert, T defValue = default)
|
||||
{
|
||||
var ret = defValue;
|
||||
var fc = new FORMATETC { cfFormat = (short)GetFormat(fmt).Id, dwAspect = DVASPECT.DVASPECT_CONTENT, lindex = -1, tymed = TYMED.TYMED_HGLOBAL };
|
||||
try
|
||||
{
|
||||
((IComDataObject)this).GetData(ref fc, out var medium);
|
||||
if (medium.unionmember != default)
|
||||
ret = convert(medium.unionmember);
|
||||
ReleaseStgMedium(medium);
|
||||
}
|
||||
catch { }
|
||||
return ret;
|
||||
}
|
||||
|
||||
private object GetObjectFromHGlobal(string format, IntPtr hGlobal)
|
||||
{
|
||||
var ptr = Win32Error.ThrowLastErrorIfNull(Kernel32.GlobalLock(hGlobal));
|
||||
try
|
||||
{
|
||||
if (format == DataFormats.Text || format == DataFormats.Rtf || format == DataFormats.CommaSeparatedValue || format == DataFormats.OemText)
|
||||
return StringHelper.GetString(ptr, CharSet.Ansi);
|
||||
else if (format == DataFormats.UnicodeText)
|
||||
return StringHelper.GetString(ptr, CharSet.Unicode);
|
||||
else if (format == DataFormats.Html)
|
||||
return NativeClipboard.GetHtml(ptr);
|
||||
else if (format == ShellClipboardFormat.CFSTR_FILENAMEA)
|
||||
return new[] { StringHelper.GetString(ptr, CharSet.Ansi) };
|
||||
else if (format == ShellClipboardFormat.CFSTR_FILENAMEW)
|
||||
return new[] { StringHelper.GetString(ptr, CharSet.Unicode) };
|
||||
else if (format == DataFormats.FileDrop)
|
||||
// TODO
|
||||
return new MemoryStream();
|
||||
else
|
||||
// TODO
|
||||
return new MemoryStream();
|
||||
}
|
||||
finally
|
||||
{
|
||||
Kernel32.GlobalUnlock(hGlobal);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Describes the properties of a file that is being copied by means of the clipboard during a Microsoft ActiveX drag-and-drop operation.
|
||||
/// </summary>
|
||||
public class ShellFileDescriptor
|
||||
{
|
||||
/// <summary>Initializes a new instance of the <see cref="ShellFileDescriptor"/> class.</summary>
|
||||
/// <param name="fileInfo">The file information.</param>
|
||||
public ShellFileDescriptor(FileInfo fileInfo)
|
||||
{
|
||||
Info = fileInfo;
|
||||
}
|
||||
|
||||
internal ShellFileDescriptor(in FILEDESCRIPTOR fd)
|
||||
{
|
||||
Info = new FileInfo(fd.cFileName);
|
||||
if (fd.dwFlags.IsFlagSet(FD_FLAGS.FD_CLSID))
|
||||
TypeIdClsid = fd.clsid;
|
||||
if (fd.dwFlags.IsFlagSet(FD_FLAGS.FD_SIZEPOINT))
|
||||
{
|
||||
IconSize = fd.sizel;
|
||||
ScreenPosition = fd.pointl;
|
||||
}
|
||||
ShowProgressUI = fd.dwFlags.IsFlagSet(FD_FLAGS.FD_PROGRESSUI);
|
||||
IsShortcut = fd.dwFlags.IsFlagSet(FD_FLAGS.FD_LINKUI);
|
||||
}
|
||||
|
||||
/// <summary>The width and height of the file icon.</summary>
|
||||
public Size? IconSize { get; set; }
|
||||
|
||||
/// <summary>Gets the file information.</summary>
|
||||
/// <value>The file information.</value>
|
||||
public FileInfo Info { get; }
|
||||
|
||||
/// <summary>Treat the operation as a shortcut.</summary>
|
||||
public bool IsShortcut { get; set; }
|
||||
|
||||
/// <summary>The screen coordinates of the file object.</summary>
|
||||
public Point? ScreenPosition { get; set; }
|
||||
|
||||
/// <summary>progress indicator is shown with drag-and-drop operations.</summary>
|
||||
public bool ShowProgressUI { get; set; }
|
||||
|
||||
/// <summary>The file type identifier.</summary>
|
||||
public Guid? TypeIdClsid { get; set; }
|
||||
|
||||
internal FILEDESCRIPTOR ToFileDesc()
|
||||
{
|
||||
return new FILEDESCRIPTOR
|
||||
{
|
||||
dwFlags = FD_FLAGS.FD_ATTRIBUTES | FD_FLAGS.FD_WRITESTIME | FD_FLAGS.FD_FILESIZE | FD_FLAGS.FD_ACCESSTIME | FD_FLAGS.FD_CREATETIME |
|
||||
(ShowProgressUI ? FD_FLAGS.FD_PROGRESSUI : 0) | (IsShortcut ? FD_FLAGS.FD_LINKUI : 0) | (TypeIdClsid.HasValue ? FD_FLAGS.FD_CLSID : 0) |
|
||||
(IconSize.HasValue ? FD_FLAGS.FD_SIZEPOINT : 0),
|
||||
clsid = TypeIdClsid ?? Guid.Empty,
|
||||
cFileName = Info.FullName,
|
||||
dwFileAttributes = (FileFlagsAndAttributes)Info.Attributes,
|
||||
nFileSIze = unchecked((ulong)Info.Length),
|
||||
ftCreationTime = Info.CreationTimeUtc.ToFileTimeStruct(),
|
||||
ftLastAccessTime = Info.LastAccessTimeUtc.ToFileTimeStruct(),
|
||||
ftLastWriteTime = Info.LastWriteTimeUtc.ToFileTimeStruct(),
|
||||
sizel = IconSize ?? SIZE.Empty,
|
||||
pointl = ScreenPosition ?? Point.Empty
|
||||
};
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue