Microsoft DirectX 9.0


The Restore method restores the memory allocation for a lost sound buffer.


HRESULT Restore();



Return Values

If the method succeeds, the return value is DS_OK.

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

Return code


If the application does not have the input focus, IDirectSoundBuffer8::Restore might not succeed. For example, if the application with the input focus has the DSSCL_WRITEPRIMARY cooperative level, no other application will be able to restore its buffers. Similarly, an application with the DSSCL_WRITEPRIMARY cooperative level must have the input focus to restore its primary buffer.

After DirectSound restores the buffer memory, the application must rewrite the buffer with valid sound data. DirectSound cannot restore the contents of the memory, only the memory itself.

The application can receive notification that a buffer is lost when it specifies that buffer in a call to the IDirectSoundBuffer8::Lock or IDirectSoundBuffer8::Play method. These methods return DSERR_BUFFERLOST to indicate a lost buffer. The IDirectSoundBuffer8::GetStatus method can also be used to retrieve the status of the sound buffer and test for the DSBSTATUS_BUFFERLOST flag.


  Header: Declared in dsound.h.

See Also