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midiStreamOut
The midiStreamOut function plays or queues a stream (buffer) of MIDI data to a MIDI output
device.
MMRESULT midiStreamOut(
HMIDISTRM hMidiStream,
|
| LPMIDIHDR lpMidiHdr,
|
| UINT cbMidiHdr
|
| );
|
|
Parameters
hMidiStream
Handle of a MIDI stream. This handle must have been returned by a call to the midiStreamOpen function. This handle identifies the output device.
lpMidiHdr
Address of a MIDIHDR structure that identifies the MIDI buffer.
cbMidiHdr
Size, in bytes, of the MIDIHDR structure.
Return Values
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error
values include the following:
MMSYSERR_NOMEM
| The system is unable to allocate or lock memory.
| MIDIERR_STILLPLAYING
| The output buffer pointed to by lpMidiHdr is still playing or is queued from a previous call to midiStreamOut.
| MIDIERR_UNPREPARED
| The header pointed to by lpMidiHdr has not been prepared.
| MMSYSERR_INVALHANDLE
| The specified device handle is invalid.
| MMSYSERR_INVALPARAM
| The pointer specified by lpMidiHdr is invalid.
|
Remarks
Because the midiStreamOpen function opens the output device in paused mode, you must call the midiStreamRestart function before you can use midiStreamOut to start the playback.
For the current implementation of this function, the buffer must be smaller
than 64K.
The buffer pointed to by the MIDIHDR structure contains one or more MIDI events, each of which is defined by a MIDIEVENT structure.
See Also
midiStreamOpen, MIDIHDR, MIDIEVENT
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