The waveOutBreakLoop function breaks a loop on the given waveform-audio output device and allows playback to continue with the next block in the driver list.

MMRESULT waveOutBreakLoop(
  HWAVEOUT hwo  



Handle to the waveform-audio output device.

Return Values

Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following.

Value Description
MMSYSERR_INVALHANDLE Specified device handle is invalid.
MMSYSERR_NODRIVER No device driver is present.
MMSYSERR_NOMEM Unable to allocate or lock memory.


The blocks making up the loop are played to the end before the loop is terminated.

Calling this function when nothing is playing or looping has no effect, and the function returns zero.


  Windows NT/2000/XP: Included in Windows NT 3.1 and later.
  Windows 95/98/Me: Included in Windows 95 and later.
  Header: Declared in Mmsystem.h; include Windows.h.
  Library: Use Winmm.lib.

See Also

Waveform Audio, Waveform Functions