void IDataObject.GetData(FORMATETC[] fmt, STGMEDIUM[] m)
{
STGMEDIUM retMedium = new STGMEDIUM();
if (fmt == null || fmt.Length < 1)
{
return;
}
foreach (DataCacheEntry e in this.entries)
{
if (e.Format.cfFormat == fmt[0].cfFormat /*|| fmt[0].cfFormat == InternalNativeMethods.CF_HDROP*/)
{
retMedium.tymed = e.Format.tymed;
// Caller must delete the memory.
retMedium.unionmember = DragDropHelper.CopyHGlobal(new IntPtr(e.Data));
break;
}
}
if (m != null && m.Length > 0)
{
m[0] = retMedium;
}
}
public static string GetSourceProjectPath(Microsoft.VisualStudio.OLE.Interop.IDataObject dataObject)
{
string projectPath = null;
FORMATETC fmtetc = CreateFormatEtc(CF_VSPROJECTCLIPDESCRIPTOR);
if (QueryGetData(dataObject, ref fmtetc) == VSConstants.S_OK)
{
STGMEDIUM stgmedium = DragDropHelper.GetData(dataObject, ref fmtetc);
if (stgmedium.tymed == (uint)TYMED.TYMED_HGLOBAL)
{
// We are releasing the cloned hglobal here.
IntPtr dropInfoHandle = stgmedium.unionmember;
if (dropInfoHandle != IntPtr.Zero)
{
try {
string path = GetData(dropInfoHandle);
// Clone the path that we can release our memory.
if (!String.IsNullOrEmpty(path))
{
projectPath = String.Copy(path);
}
} finally {
Marshal.FreeHGlobal(dropInfoHandle);
}
}
}
}
return(projectPath);
}
/// <summary>
/// Retrieves data from a VS format.
/// </summary>
public static List <string> GetDroppedFiles(ushort format, Microsoft.VisualStudio.OLE.Interop.IDataObject dataObject, out DropDataType ddt)
{
ddt = DropDataType.None;
var droppedFiles = new List <string>();
// try HDROP
var fmtetc = CreateFormatEtc(format);
if (QueryGetData(dataObject, ref fmtetc) == VSConstants.S_OK)
{
var stgmedium = DragDropHelper.GetData(dataObject, ref fmtetc);
if (stgmedium.tymed == (uint)TYMED.TYMED_HGLOBAL)
{
// We are releasing the cloned hglobal here.
var dropInfoHandle = stgmedium.unionmember;
if (dropInfoHandle != IntPtr.Zero)
{
ddt = DropDataType.Shell;
try
{
var numFiles = UnsafeNativeMethods.DragQueryFile(dropInfoHandle, 0xFFFFFFFF, null, 0);
// We are a directory based project thus a projref string is placed on the clipboard.
// We assign the maximum length of a projref string.
// The format of a projref is : <Proj Guid>|<project rel path>|<file path>
var lenght = (uint)Guid.Empty.ToString().Length + 2 * NativeMethods.MAX_PATH + 2;
var moniker = new char[lenght + 1];
for (uint fileIndex = 0; fileIndex < numFiles; fileIndex++)
{
var queryFileLength = UnsafeNativeMethods.DragQueryFile(dropInfoHandle, fileIndex, moniker, lenght);
var filename = new string(moniker, 0, (int)queryFileLength);
droppedFiles.Add(filename);
}
}
finally
{
Marshal.FreeHGlobal(dropInfoHandle);
}
}
}
}
return(droppedFiles);
}
