DirectDrawCreateClipper

This function creates an instance of a DirectDrawClipper object not associated with a DirectDraw object.

HRESULT WINAPI DirectDrawCreateClipper(
  DWORD dwFlags, 
  LPDIRECTDRAWCLIPPER FAR* lplpDDClipper, 
  IUnknown FAR* pUnkOuter
); 

Parameters

• dwFlags
  [in] Currently not used; set to zero.
• lplpDDClipper
  [out] Address of a pointer that will be filled with the address of the new DirectDrawClipper object.
• pUnkOuter
  [in] Allows for future compatibility with COM aggregation features. Presently, this method will return CLASS_E_NOAGGREGATION if this parameter is anything but NULL.

Return Values

If the function succeeds, the return value is DD_OK.

If the function fails, the return value may be one of the following error values:

• DDERR_INVALIDPARAMS
• DDERR_OUTOFMEMORY
• CLASS_E_NOAGGREGATION

Remarks

This function can be called before any DirectDraw objects are created. Because these DirectDrawClipper objects are not owned by any DirectDraw object, they are not automatically released when an application's objects are released. If the application does not explicitly release the DirectDrawClipper objects, DirectDraw will release them when the application terminates.

To create a DirectDrawClipper object owned by a specific DirectDraw object, use the IDirectDraw4::CreateClipper method.

Requirements

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Ddraw.h.
Link Library: Ddraw.lib.

See Also

IDirectDraw4::CreateClipper

 Last updated on Thursday, April 08, 2004

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