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Re: Wildcard AUListener or AUEventListener
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Re: Wildcard AUListener or AUEventListener


  • Subject: Re: Wildcard AUListener or AUEventListener
  • From: William Stewart <email@hidden>
  • Date: Tue, 6 Jun 2006 15:43:52 -0700

No - there is no wildcard listener. you have to instantiate a listener for each parameter - the wildcard is to use to issue a notification that any parameter could change. Have a look at the code in AudioUnitHosting - we use this wildcard here to notify listeners when a preset is set.

On 05/06/2006, at 11:11 AM, B.J. Buchalter wrote:




On 6/5/06 1:34 PM, "Cynthia Bruyns" <email@hidden> wrote:

Hi Cynthia,

kAUParameterListener_AnyParameter

Yeah -- that doesn't work unfortunately. You get an error code back when you
call AUListenerAddParameter with that parameter number -- the error code is
"invalid parameter". It seems that constant is only for sending
notifications; not for receiving them.


As far as I can tell, you have to iterate over all the parameters and
register for each parameter. At least that is what I am doing now and it
seems to work fine (if a little cumbersome).


Best regards,

B.J. Buchalter

Metric Halo
5 Donovan Drive
Hopewell Junction, NY 12533 USA
tel +1 845 223-6112
fax +1 603 250-2451


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