void IDataObject.GetData(FORMATETC[] fmt, STGMEDIUM[] m)
{
STGMEDIUM retMedium = new STGMEDIUM();
if (fmt == null || fmt.Length < 1)
{
return;
}
SafeGlobalAllocHandle copy = null;
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.
copy = DragDropHelper.CopyHGlobal(e.Data);
retMedium.unionmember = copy.DangerousGetHandle();
break;
}
}
if (m != null && m.Length > 0)
{
m[0] = retMedium;
if (copy != null)
{
copy.SetHandleAsInvalid();
}
}
}
public static SafeGlobalAllocHandle CopyHGlobal(SafeGlobalAllocHandle data)
{
IntPtr src = UnsafeNativeMethods.GlobalLock(data);
UIntPtr size = UnsafeNativeMethods.GlobalSize(data);
SafeGlobalAllocHandle ptr = UnsafeNativeMethods.GlobalAlloc(0, size);
IntPtr buffer = UnsafeNativeMethods.GlobalLock(ptr);
try
{
UnsafeNativeMethods.MoveMemory(buffer, src, size);
}
finally
{
if (buffer != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalUnlock(ptr);
}
if (src != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalUnlock(data);
}
}
return(ptr);
}
public static SafeGlobalAllocHandle CopyHGlobal(SafeGlobalAllocHandle data)
{
IntPtr src = UnsafeNativeMethods.GlobalLock(data);
UIntPtr size = UnsafeNativeMethods.GlobalSize(data);
SafeGlobalAllocHandle ptr = UnsafeNativeMethods.GlobalAlloc(0, size);
IntPtr buffer = UnsafeNativeMethods.GlobalLock(ptr);
try
{
UnsafeNativeMethods.MoveMemory(buffer, src, size);
}
finally
{
if(buffer != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalUnlock(ptr);
}
if(src != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalUnlock(data);
}
}
return ptr;
}
/// <summary>
/// The method that does the cleanup.
/// </summary>
/// <param name="disposing"></param>
private void Dispose(bool disposing)
{
if (disposing)
{
SafeGlobalAllocHandle handle = this.data;
if (handle != null)
{
handle.Dispose();
data = null;
}
}
}
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 && stgmedium.unionmember != IntPtr.Zero)
{
// We are releasing the cloned hglobal here.
using (SafeGlobalAllocHandle dropInfoHandle = new SafeGlobalAllocHandle(stgmedium.unionmember, true))
{
projectPath = GetData(dropInfoHandle);
}
}
}
return(projectPath);
}
/// <summary>
/// Returns the data packed after the DROPFILES structure.
/// </summary>
/// <param name="dropHandle"></param>
/// <returns></returns>
public static string GetData(SafeGlobalAllocHandle dropHandle)
{
IntPtr data = UnsafeNativeMethods.GlobalLock(dropHandle);
try
{
_DROPFILES df = (_DROPFILES)Marshal.PtrToStructure(data, typeof(_DROPFILES));
if (df.fWide)
{
IntPtr pdata = new IntPtr((long)data + df.pFiles);
return(Marshal.PtrToStringUni(pdata));
}
}
finally
{
if (data != null)
{
UnsafeNativeMethods.GlobalUnlock(dropHandle);
}
}
return(null);
}
/// <summary>
/// The IntPtr is data allocated that should be removed. It is allocated by the ProcessSelectionData method.
/// </summary>
public DataCacheEntry(FORMATETC fmt, SafeGlobalAllocHandle data, DATADIR dir)
{
this.format = fmt;
this.data = data;
this.dataDir = dir;
}
internal static extern bool GlobalUnlock(SafeGlobalAllocHandle h);
/// <summary>
/// The IntPtr is data allocated that should be removed. It is allocated by the ProcessSelectionData method.
/// </summary>
public DataCacheEntry(FORMATETC fmt, SafeGlobalAllocHandle data, DATADIR dir)
{
this.format = fmt;
this.data = data;
this.dataDir = dir;
}
/// <summary>
/// The method that does the cleanup.
/// </summary>
/// <param name="disposing"></param>
private void Dispose(bool disposing)
{
if (disposing)
{
SafeGlobalAllocHandle handle = this.data;
if (handle != null)
{
handle.Dispose();
data = null;
}
}
}
internal static extern bool GlobalUnlock(SafeGlobalAllocHandle h);
internal static extern UIntPtr GlobalSize(SafeGlobalAllocHandle h);
internal static extern IntPtr GlobalLock(SafeGlobalAllocHandle h);
internal static extern UIntPtr GlobalSize(SafeGlobalAllocHandle h);
/// <summary>
/// Returns the data packed after the DROPFILES structure.
/// </summary>
/// <param name="dropHandle"></param>
/// <returns></returns>
public static string GetData(SafeGlobalAllocHandle dropHandle)
{
IntPtr data = UnsafeNativeMethods.GlobalLock(dropHandle);
try
{
_DROPFILES df = (_DROPFILES)Marshal.PtrToStructure(data, typeof(_DROPFILES));
if(df.fWide)
{
IntPtr pdata = new IntPtr((long)data + df.pFiles);
return Marshal.PtrToStringUni(pdata);
}
}
finally
{
if(data != null)
{
UnsafeNativeMethods.GlobalUnlock(dropHandle);
}
}
return null;
}
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 && stgmedium.unionmember != IntPtr.Zero)
{
// We are releasing the cloned hglobal here.
using (SafeGlobalAllocHandle dropInfoHandle = new SafeGlobalAllocHandle(stgmedium.unionmember, true))
{
projectPath = GetData(dropInfoHandle);
}
}
}
return projectPath;
}
public void SetData(FORMATETC format, SafeGlobalAllocHandle data)
{
this.entries.Add(new DataCacheEntry(format, data, DATADIR.DATADIR_SET));
}
public void SetData(FORMATETC format, SafeGlobalAllocHandle data)
{
this.entries.Add(new DataCacheEntry(format, data, DATADIR.DATADIR_SET));
}
internal static extern IntPtr GlobalLock(SafeGlobalAllocHandle h);