CWnd::GetTopLevelFrame
CFrameWnd* GetTopLevelFrame( ) const;
Return Value
Identifies the top-level frame window of the window.
The returned pointer may be temporary and should not be stored for later use.
Remarks
Call this member function to retrieve the window’s top level frame window, if any. If CWnd has no attached window, or its top-level parent is not a CFrameWnd-derived object, this function returns NULL.