Re: Property notification questions
Re: Property notification questions
- Subject: Re: Property notification questions
- From: Chris Reed <email@hidden>
- Date: Wed, 12 Feb 2003 18:32:29 -0600
On Wednesday, Feb 12, 2003, at 16:19 US/Central, Bill Stewart wrote:
I'd actually use the AUParameterListener to do this communication...
Create a bunch of private parameters that aren't going to be
registered or have values in the scope objects...
Then, as you need to get this information use the parameter listener
API to issue a notification of a parameter value change... (make sure
you actually change the value of the param - just do a ++ for instance
so that the param listener will actually register a change in the
value of the parameter...
Thus - you have a displayNoteOnFeedbackParam
in your au:
mDisplayNoteOnFeedbackParamValue++;
AUParameterListenerNotify(NULL, NULL, myFeedbackParamStruct);
Then your view registers for notifications for changes to that
parameter value and sets the run loop that it wants to get
notification on (including the granularity) - so then your view will
see the notification on its UI thread...
Then - when your view gets this notification it know what it has to do
(ie. query the value of the property for instance) in response to
that...
Oh, cool. I hadn't really thought about using the parameter listeners
to do this for me.
One question, though... Is calling AUParameterListenerNotify()
nonblocking? I don't see how it can be if it installs a CFRunLoopTimer
on the main run loop.
-chris
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