IDirectDrawSurface7::ChangeUniquenessValue method (ddraw.h)

Manually updates the uniqueness value for this surface.

Syntax

HRESULT ChangeUniquenessValue();

Return value

If the method succeeds, the return value is DD_OK.

If it fails, the method can return one of the following error values:

  • DDERR_EXCEPTION
  • DDERR_INVALIDOBJECT
  • DDERR_INVALIDPARAMS

Remarks

DirectDraw automatically updates uniqueness values whenever the contents of a surface change.

Requirements

   
Target Platform Windows
Header ddraw.h
Library Ddraw.lib
DLL Ddraw.dll

See also

IDirectDrawSurface7