MIDINotifyProc
MIDINotifyProc
- Subject: MIDINotifyProc
- From: "Doug McKenzie" <email@hidden>
- Date: Wed, 31 Jul 2002 17:39:46 -0700
Hi! I just finished coding my first MIDI app for OS X. Now I want to add a
few more features to it. Currently, my app just sends my midi packet lists
to the first available destination like this:
MIDIEndPointRef dest = MIDIGetDestination(0);
MIDISend(gOutputPort, dest, &packetList);
I'm wondering how I could use the MIDINotifyProc callback function to allow
the user to select to MIDI destination they want to send to (I want the
contents of a pop-up menu to be automatically updated when there is a change
in the current MIDI setup). I'm not very clear on what a callback function
is, and I don't know how to use them. Some Example code would be great! I'm
writing my app in Objective-C. ANY help would be greatly appreciated :)
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