unsafe void Win32Com.IDropTarget.Drop(Win32Com.IDataObject pDataObj, int grfKeyState, UnmanagedMethods.POINT pt, DropEffect *pdwEffect)
{
try
{
var dispatch = _tl?.Input;
if (dispatch == null)
{
*pdwEffect = (int)DropEffect.None;
}
SetDataObject(pDataObj);
var args = new RawDragEvent(
_dragDevice,
RawDragEventType.Drop,
_target,
GetDragLocation(pt),
_currentDrag,
ConvertDropEffect(*pdwEffect),
ConvertKeyState(grfKeyState)
);
dispatch(args);
*pdwEffect = ConvertDropEffect(args.Effects);
}
finally
{
ReleaseDataObject();
}
}
private void SetDataObject(Win32Com.IDataObject pDataObj)
{
var newDrag = GetAvaloniaObjectFromCOM(pDataObj);
if (_currentDrag != newDrag)
{
ReleaseDataObject();
_currentDrag = newDrag;
}
}
public static unsafe IDataObject GetAvaloniaObjectFromCOM(Win32Com.IDataObject pDataObj)
{
if (pDataObj is null)
{
throw new ArgumentNullException(nameof(pDataObj));
}
if (pDataObj is IDataObject disposableDataObject)
{
return(disposableDataObject);
}
var dataObject = MicroComRuntime.TryUnwrapManagedObject(pDataObj) as DataObject;
if (dataObject is not null)
{
return(dataObject);
}
return(new OleDataObject(pDataObj));
}
