public override DragDropEffects ProvideDragFeedback(Point screenPoint, int keyState, DragDropEffects supportedEffects)
{
if (_unhandledDropTarget == null)
{
return(DragDropEffects.None);
}
_mkKeyState = MshtmlEditorDragAndDropTarget.ConvertKeyState(keyState);
_effect = MshtmlEditorDragAndDropTarget.ConvertDropEffect(supportedEffects);
_point = new POINT();
_point.x = screenPoint.X;
_point.y = screenPoint.Y;
// We have to call begin drag here because we need the location and key state which we dont have in BeginDrag()
if (!_hasCalledBeginDrag)
{
_hasCalledBeginDrag = true;
_unhandledDropTarget.DragEnter(_oleDataObject, _mkKeyState, _point, ref _effect);
}
_unhandledDropTarget.DragOver(_mkKeyState, _point, ref _effect);
return(MshtmlEditorDragAndDropTarget.ConvertDropEffect(_effect));
}
public UnhandledDropTarget(DataObjectMeister dataObject, DataFormatHandlerContext handlerContext, OpenLiveWriter.Interop.Com.IDropTarget unhandledDropTarget)
: base(dataObject, handlerContext)
{
_unhandledDropTarget = unhandledDropTarget;
_oleDataObject = MshtmlEditorDragAndDropTarget.ExtractOleDataObject(DataMeister.IDataObject);
}
