IDirectDrawSurface7::Unlock

The IDirectDrawSurface7::Unlock method notifies DirectDraw that the direct surface manipulations are complete.

HRESULT Unlock(
  LPRECT lpRect 
);

Parameters

lpRect

Address of the RECT structure that was used to lock the surface in the corresponding call to the IDirectDrawSurface7::Lock method. This parameter can be NULL only if the entire surface was locked by passing NULL in the lpDestRect parameter of the corresponding call to the IDirectDrawSurface7::Lock method.

Return Values

If the method succeeds, the return value is DD_OK.

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

Remarks

Because it is possible to call IDirectDrawSurface7::Lock multiple times for the same surface with different destination rectangles, the pointer in lpRect links the calls to the IDirectDrawSurface7::Lock and IDirectDrawSurface7::Unlock methods.

Requirements

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 98.
  Header: Declared in ddraw.h.

See Also

IDirectDrawSurface7::Lock