Called after receiving the last message (typically WM_NCDESTROY).
virtual void OnFinalMessage(
   HWND hWnd 
);
Parameters
- hWnd
 [in] A handle to the window being destroyed.
Remarks
The default implementation of OnFinalMessage does nothing, but you can override this function to handle cleanup before destroying a window. If you want to automatically delete your object upon the window destruction, you can call delete this; in this function.
Requirements
Header: atlwin.h