MidiInProc

The MidiInProc function is the callback function for handling incoming MIDI messages. MidiInProc is a placeholder for the application-supplied function name. The address of this function can be specified in the callback-address parameter of the midiInOpen function.

void CALLBACK MidiInProc(
  HMIDIIN hMidiIn,  
  UINT wMsg,        
  DWORD dwInstance, 
  DWORD dwParam1,   
  DWORD dwParam2    
);
 

Parameters

hMidiIn

Handle of the MIDI input device.

wMsg

MIDI input message.

dwInstance

Instance data supplied with the midiInOpen 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.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Import Library: User-defined.

See Also

Musical Instrument Digital Interface (MIDI) Overview, MIDI Functions, EnterCriticalSection, LeaveCriticalSection, midiInOpen, midiOutLongMsg, midiOutShortMsg, OutputDebugString, PostMessage, PostThreadMessage, SetEvent, timeGetSystemTime, timeGetTime, timeKillEvent, timeSetEvent,