IDirectDraw4::DuplicateSurface

The IDirectDraw4::DuplicateSurface method duplicates a DirectDrawSurface object.

HRESULT DuplicateSurface(
  LPDIRECTDRAWSURFACE4 lpDDSurface,             
  LPLPDIRECTDRAWSURFACE4 FAR *lplpDupDDSurface  
);
 

Parameters

lpDDSurface

Address of the IDirectDrawSurface4 interface for the surface to be duplicated.

lplpDupDDSurface

Address of a variable that will be filled with an IDirectDrawSurface4 interface pointer for the newly duplicated DirectDrawSurface object.

Return Values

If the method succeeds, the return value is DD_OK.

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

Remarks

This method creates a new DirectDrawSurface object that points to the same surface memory as an existing DirectDrawSurface object. This duplicate can be used just like the original object. The surface memory is released after the last object referencing it is released. A primary surface, 3-D surface, or implicitly created surface cannot be duplicated.

QuickInfo

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in ddraw.h.
  Import Library: Use ddraw.lib.