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MidiOutProc
The MidiOutProc function is the callback function for handling outgoing MIDI messages. MidiOutProc is a placeholder for the application-supplied function name. The address of
the function can be specified in the callback-address parameter of the midiOutOpen function.
- oid CALLBACK MidiOutProc(
HMIDIOUT hmo,
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| UINT wMsg,
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| DWORD dwInstance,
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| DWORD dwParam1,
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| DWORD dwParam2
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| );
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Parameters
hmo
Handle of the MIDI device associated with the callback function.
wMsg
MIDI output message.
dwInstance
Instance data supplied by using the midiOutOpen function.
dwParam1
Message parameters.
dwParam2
Message parameters.
Return Values
This function does not return a value.
Remarks
Applications should not call any system-defined functions from inside a
callback function, except for EnterCriticalSection, LeaveCriticalSection, midiOutLongMsg, midiOutShortMsg, OutputDebugString, PostMessage, PostThreadMessage, SetEvent, timeGetSystemTime, timeGetTime, timeKillEvent, and timeSetEvent. Calling other wave functions will cause deadlock.
See Also
EnterCriticalSection, LeaveCriticalSection, midiOutLongMsg, midiOutOpen, midiOutShortMsg, OutputDebugString, PostMessage, PostThreadMessage, SetEvent, timeGetSystemTime, timeGetTime, timeKillEvent, timeSetEvent,
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