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