Allows the client to specify the effects of a drop operation.
HRESULT GetDragDropEffect(
BOOL fDrag,
DWORD grfKeyState,
LPDWORD pdwEffect
);
No return value.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in richole.h.
Rich Edit Controls Overview, Rich Edit OLE Interfaces, IDropTarget::DragEnter, IDropTarget::DragOver, IDropTarget::Drop IRichEditOleCallback