The midiStreamStop function turns off all notes on all MIDI channels for the specified MIDI output device.

MMRESULT midiStreamStop(



Handle to a MIDI stream. This handle must have been returned by a call to the midiStreamOpen function. This handle identifies the output device.

Return Values

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

Value Description
MMSYSERR_INVALHANDLE The specified device handle is invalid.


When you call this function, any pending system-exclusive or stream output buffers are returned to the callback mechanism and the MHDR_DONE bit is set in the dwFlags member of the MIDIHDR structure.

While the midiOutReset function turns off all notes, midiStreamStop turns off only those notes that have been turned on by a MIDI note-on message.


  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

Musical Instrument Digital Interface (MIDI), MIDI Functions, midiStreamOpen, MIDIHDR, midiOutReset