HRESULT GetHWnd(HWND FAR * lphWnd);
Retrieves the window handle previously associated with this DirectDrawClipper object by the IDirectDrawClipper::SetHWnd method.
·Returns DD_OK if successful, or one of the following error values otherwise:
lphWnd
Address of the window handle previously associated with this DirectDrawClipper object by the IDirectDrawClipper::SetHWnd method.