mirror of https://github.com/dahall/Vanara.git
81 lines
2.3 KiB
C#
81 lines
2.3 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Runtime.InteropServices.ComTypes;
|
|
using System.Text;
|
|
using System.Windows.Forms;
|
|
using Vanara.Extensions;
|
|
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
|
|
{
|
|
public static IReadOnlyList<string> GetFileNameMap(this DataObject dobj)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
var l = new List<PIDL>();
|
|
if (dobj is IComDataObject cdo)
|
|
{
|
|
var fc = MakeFORMATETC(ShellClipboardFormat.CFSTR_SHELLIDLIST);
|
|
try
|
|
{
|
|
cdo.GetData(ref fc, out var medium);
|
|
if (medium.unionmember != default)
|
|
{
|
|
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));
|
|
}
|
|
ReleaseStgMedium(medium);
|
|
}
|
|
catch { }
|
|
}
|
|
return (IReadOnlyList<PIDL>)l;
|
|
}
|
|
|
|
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
|
|
{
|
|
cfFormat = (short)GetFormat(fmt).Id,
|
|
dwAspect = DVASPECT.DVASPECT_CONTENT,
|
|
lindex = -1,
|
|
tymed = tymed
|
|
};
|
|
|
|
private static DataFormats.Format GetFormat(string format) => DataFormats.GetFormat(format);
|
|
}
|
|
}
|