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MIDIClientCreate Arguments

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MIDIClientCreate Arguments

Subject: MIDIClientCreate Arguments
From: Matthew Hubble <email@hidden>
Date: Mon, 28 Feb 2011 09:04:23 +0000

Hello Mailing List,

Just working on a program that creates a virtual MIDI port to send out MIDI messages to other programs and so far it all seems to work.

I am using the MIDIClientCreate function declared below:

extern OSStatus
MIDIClientCreate(     CFStringRef       name,
                      MIDINotifyProc    notifyProc,
                      void *            notifyRefCon,
                      MIDIClientRef *   outClient )

and was wondering what the notifyRefCon argument is? In the documentation it just says:

A refCon passed back to notifyRefCon

At the moment I am just passing in NULL but I would like to know what it is for anyhow.

Thanks,

Matt
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