HRESULT WINAPI DirectDrawClipper_QueryInterface (LPDIRECTDRAWCLIPPER, REFIID,  LPVOID*);
ULONG WINAPI DirectDrawClipper_Release(LPDIRECTDRAWCLIPPER);
ULONG WINAPI DirectDrawClipper_AddRef (LPDIRECTDRAWCLIPPER);
HRESULT WINAPI DirectDrawClipper_Initialize(LPDIRECTDRAWCLIPPER, LPDIRECTDRAW, DWORD);
HRESULT WINAPI DirectDrawClipper_SetHwnd( LPDIRECTDRAWCLIPPER, DWORD, HWND);
HRESULT WINAPI DirectDrawClipper_GetClipList(LPDIRECTDRAWCLIPPER, LPRECT, LPRGNDATA,LPDWORD);
HRESULT WINAPI DirectDrawClipper_SetClipList(LPDIRECTDRAWCLIPPER,LPRGNDATA,DWORD);
HRESULT WINAPI DirectDrawClipper_QueryInterface(LPDIRECTDRAWCLIPPER, REFIID, LPVOID*);
HRESULT WINAPI DirectDrawClipper_GetHWnd(LPDIRECTDRAWCLIPPER, HWND*);
HRESULT WINAPI DirectDrawClipper_IsClipListChanged(LPDIRECTDRAWCLIPPER, BOOL* lpbChanged);