IDirectDrawSurface7::Unlock method (ddraw.h)

Notifies DirectDraw that the direct surface manipulations are complete.

Syntax

HRESULT Unlock(
  [in] LPRECT unnamedParam1
);

Parameters

[in] unnamedParam1

A pointer to a 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 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_GENERIC
• DDERR_INVALIDOBJECT
• DDERR_INVALIDPARAMS
• DDERR_INVALIDRECT
• DDERR_NOTLOCKED
• DDERR_SURFACELOST

Remarks

Because you can 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

See also

IDirectDrawSurface7