unsafe uint Win32Com.IDataObject.QueryGetData(FORMATETC *format)
{
if (_wrapped is Win32Com.IDataObject ole)
{
return(ole.QueryGetData(format));
}
if (format->dwAspect != DVASPECT.DVASPECT_CONTENT)
{
return(DV_E_DVASPECT);
}
if (!format->tymed.HasAllFlags(TYMED.TYMED_HGLOBAL))
{
return(DV_E_TYMED);
}
var dataFormat = ClipboardFormats.GetFormat(format->cfFormat);
if (string.IsNullOrEmpty(dataFormat) || !_wrapped.Contains(dataFormat))
{
return(DV_E_FORMATETC);
}
return(0);
}
void IOleDataObject.GetDataHere(ref FORMATETC format, ref STGMEDIUM medium)
{
if (_wrapped is IOleDataObject ole)
{
ole.GetDataHere(ref format, ref medium);
return;
}
if (medium.tymed != TYMED.TYMED_HGLOBAL || !format.tymed.HasFlag(TYMED.TYMED_HGLOBAL))
{
Marshal.ThrowExceptionForHR(DV_E_TYMED);
}
if (format.dwAspect != DVASPECT.DVASPECT_CONTENT)
{
Marshal.ThrowExceptionForHR(DV_E_DVASPECT);
}
string fmt = ClipboardFormats.GetFormat(format.cfFormat);
if (string.IsNullOrEmpty(fmt) || !_wrapped.Contains(fmt))
{
Marshal.ThrowExceptionForHR(DV_E_FORMATETC);
}
if (medium.unionmember == IntPtr.Zero)
{
Marshal.ThrowExceptionForHR(STG_E_MEDIUMFULL);
}
int result = WriteDataToHGlobal(fmt, ref medium.unionmember);
Marshal.ThrowExceptionForHR(result);
}
unsafe uint Win32Com.IDataObject.GetDataHere(FORMATETC *format, Interop.STGMEDIUM *medium)
{
if (_wrapped is Win32Com.IDataObject ole)
{
return(ole.GetDataHere(format, medium));
}
if (medium->tymed != TYMED.TYMED_HGLOBAL || !format->tymed.HasAllFlags(TYMED.TYMED_HGLOBAL))
{
return(DV_E_TYMED);
}
if (format->dwAspect != DVASPECT.DVASPECT_CONTENT)
{
return(DV_E_DVASPECT);
}
string fmt = ClipboardFormats.GetFormat(format->cfFormat);
if (string.IsNullOrEmpty(fmt) || !_wrapped.Contains(fmt))
{
return(DV_E_FORMATETC);
}
if (medium->unionmember == IntPtr.Zero)
{
return(STG_E_MEDIUMFULL);
}
return(WriteDataToHGlobal(fmt, ref medium->unionmember));
}
void IOleDataObject.GetData(ref FORMATETC format, out STGMEDIUM medium)
{
if (_wrapped is IOleDataObject ole)
{
ole.GetData(ref format, out medium);
return;
}
if (!format.tymed.HasAllFlags(TYMED.TYMED_HGLOBAL))
{
Marshal.ThrowExceptionForHR(DV_E_TYMED);
}
if (format.dwAspect != DVASPECT.DVASPECT_CONTENT)
{
Marshal.ThrowExceptionForHR(DV_E_DVASPECT);
}
string fmt = ClipboardFormats.GetFormat(format.cfFormat);
if (string.IsNullOrEmpty(fmt) || !_wrapped.Contains(fmt))
{
Marshal.ThrowExceptionForHR(DV_E_FORMATETC);
}
medium = default(STGMEDIUM);
medium.tymed = TYMED.TYMED_HGLOBAL;
int result = WriteDataToHGlobal(fmt, ref medium.unionmember);
Marshal.ThrowExceptionForHR(result);
}
private FORMATETC ConvertToFormatEtc(string aFormatName)
{
FORMATETC result = default(FORMATETC);
result.cfFormat = ClipboardFormats.GetFormat(aFormatName);
result.dwAspect = DVASPECT.DVASPECT_CONTENT;
result.ptd = IntPtr.Zero;
result.lindex = -1;
result.tymed = TYMED.TYMED_HGLOBAL;
return(result);
}
private unsafe object GetDataFromOleHGLOBAL(string format, DVASPECT aspect)
{
var formatEtc = new Interop.FORMATETC();
formatEtc.cfFormat = ClipboardFormats.GetFormat(format);
formatEtc.dwAspect = aspect;
formatEtc.lindex = -1;
formatEtc.tymed = TYMED.TYMED_HGLOBAL;
if (_wrapped.QueryGetData(&formatEtc) == 0)
{
Interop.STGMEDIUM medium = default;
_ = _wrapped.GetData(&formatEtc, &medium);
try
{
if (medium.unionmember != IntPtr.Zero && medium.tymed == TYMED.TYMED_HGLOBAL)
{
if (format == DataFormats.Text)
{
return(ReadStringFromHGlobal(medium.unionmember));
}
if (format == DataFormats.FileNames)
{
return(ReadFileNamesFromHGlobal(medium.unionmember));
}
byte[] data = ReadBytesFromHGlobal(medium.unionmember);
if (IsSerializedObject(data))
{
using (var ms = new MemoryStream(data))
{
ms.Position = DataObject.SerializedObjectGUID.Length;
BinaryFormatter binaryFormatter = new BinaryFormatter();
return(binaryFormatter.Deserialize(ms));
}
}
return(data);
}
}
finally
{
UnmanagedMethods.ReleaseStgMedium(ref medium);
}
}
return(null);
}
private unsafe IEnumerable <string> GetDataFormatsCore()
{
var formatsList = new List <string>();
var enumFormat = _wrapped.EnumFormatEtc((int)DATADIR.DATADIR_GET);
if (enumFormat != null)
{
enumFormat.Reset();
var formats = ArrayPool <Interop.FORMATETC> .Shared.Rent(1);
try
{
uint fetched = 0;
do
{
fixed(Interop.FORMATETC *formatsPtr = formats)
{
// Read one item at a time.
// When "celt" parameter is 1, "pceltFetched" is ignored.
var res = enumFormat.Next(1, formatsPtr, &fetched);
if (res != 0)
{
break;
}
}
if (fetched > 0)
{
if (formats[0].ptd != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(formats[0].ptd);
}
formatsList.Add(ClipboardFormats.GetFormat(formats[0].cfFormat));
}
}while (fetched > 0);
}
finally
{
ArrayPool <Interop.FORMATETC> .Shared.Return(formats);
}
}
return(formatsList);
}
int IOleDataObject.QueryGetData(ref FORMATETC format)
{
if (_wrapped is IOleDataObject ole)
{
return(ole.QueryGetData(ref format));
}
if (format.dwAspect != DVASPECT.DVASPECT_CONTENT)
{
return(DV_E_DVASPECT);
}
if (!format.tymed.HasFlag(TYMED.TYMED_HGLOBAL))
{
return(DV_E_TYMED);
}
string dataFormat = ClipboardFormats.GetFormat(format.cfFormat);
if (!string.IsNullOrEmpty(dataFormat) && _wrapped.Contains(dataFormat))
{
return(unchecked ((int)UnmanagedMethods.HRESULT.S_OK));
}
return(DV_E_FORMATETC);
}
private IEnumerable <string> GetDataFormatsCore()
{
var enumFormat = _wrapped.EnumFormatEtc(DATADIR.DATADIR_GET);
if (enumFormat != null)
{
enumFormat.Reset();
FORMATETC[] formats = new FORMATETC[1];
int[] fetched = { 1 };
while (fetched[0] > 0)
{
fetched[0] = 0;
if (enumFormat.Next(1, formats, fetched) == 0 && fetched[0] > 0)
{
if (formats[0].ptd != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(formats[0].ptd);
}
yield return(ClipboardFormats.GetFormat(formats[0].cfFormat));
}
}
}
}
private IEnumerable <string> GetDataFormatsCore()
{
var enumFormat = _wrapped.EnumFormatEtc(DATADIR.DATADIR_GET);
if (enumFormat != null)
{
enumFormat.Reset();
var formats = ArrayPool <FORMATETC> .Shared.Rent(1);
var fetched = ArrayPool <int> .Shared.Rent(1);
try
{
do
{
fetched[0] = 0;
if (enumFormat.Next(1, formats, fetched) == 0 && fetched[0] > 0)
{
if (formats[0].ptd != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(formats[0].ptd);
}
yield return(ClipboardFormats.GetFormat(formats[0].cfFormat));
}
}while (fetched[0] > 0);
}
finally
{
ArrayPool <FORMATETC> .Shared.Return(formats);
ArrayPool <int> .Shared.Return(fetched);
}
}
}
