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IDirectDrawSurface7::ChangeUniquenessValue method (ddraw.h)

  • Article

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

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

See also

IDirectDrawSurface7