Export (0) Print
Expand All
Expand Minimize

MidiOutProc callback function

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.

Syntax


void CALLBACK MidiOutProc(
  HMIDIOUT hmo,
  UINT wMsg,
  DWORD_PTR dwInstance,
  DWORD_PTR dwParam1,
  DWORD_PTR dwParam2
);

Parameters

hmo

Handle to the MIDI device associated with the callback function.

wMsg

MIDI output message.

dwInstance

Instance data supplied by using the midiOutOpen function.

dwParam1

Message parameter.

dwParam2

Message parameter.

Return value

This function does not return a value.

Remarks

Applications should not call any multimedia functions from inside the callback function, as doing so can cause a deadlock. Other system functions can safely be called from the callback.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Mmsystem.h (include Windows.h)

See also

MIDI Functions

 

 

Community Additions

ADD
Show:
© 2014 Microsoft