Home Library Learn Downloads Support Community
Sign in | United States - English | |
This topic has not yet been rated - Rate this topic

MidiOutProc callback function

Applies to: desktop apps only

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

Copy 
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

Minimum supported server

Windows 2000 Server

Header
Mmsystem.h (include Windows.h)

See also

MIDI Functions

 

 

Send comments about this topic to Microsoft

Build date: 2/3/2012

Did you find this helpful?
(1500 characters remaining)
Community Content Add
Annotations FAQ