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Re: AudioUnit - CarbonView - Toggling BevelButton
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Re: AudioUnit - CarbonView - Toggling BevelButton


  • Subject: Re: AudioUnit - CarbonView - Toggling BevelButton
  • From: Luke Bellandi <email@hidden>
  • Date: Tue, 17 May 2005 16:21:13 -0700

Hi Mark,

On May 17, 2005, at 4:08 PM, mark erickson wrote:
Luke,
Thanks for the rapid response.
You are right - I'm not calling SetParameter()...
Sliders seem to get tracked automatically, as do text boxes. I don't see where to handle a button press.

Sliders and Text boxes are created and registered for event handling via static methods in the AUControlGroup class (declared in AUPublic/AUCarbonViewBase/AUControlGroup.h)  You can create a function similar in style to those that already exist to get the toggle button behavior you want.

However, it seems like a checkbox would provide the same functionality you're looking to get out of a toggle button.  Is there a reason you need a toggle button over a checkbox?

Best,
Luke

Thanks again.
Mark

On May 17, 2005, at 5:47 PM, Luke Bellandi wrote:


Hi Mark, 

On May 17, 2005, at 2:59 PM, mark erickson wrote:


I'm trying to make an AU plug-in using the newest carbon view template for Xcode provided by apple.

I can get sliders and check boxes to work, but I can't seem to get a bevel button that toggles working. It draws fine and seems to track mouse clicks fine. I've tried both defining the outParameterInfo.unit for this button as both kAudioUnitParameterUnit_Boolean and kAudioUnitParameterUnit_Indexed but neither seem to work. Additionally, outParameterInfo.minValue = 0 and outParameterInfo.maxValue = 1. 

In use, GetParameter( kParam_One ) always returns 0, never 1.

Is it possible to use a bevelbutton in a toggled, boolean state like this? If so, what am I doing wrong?

It's surely possible.

Are you calling SetParameter (...) as appropriate when the button is pressed?  [e.g., SetParameter (kParam_One, 1 - GetParameter(kParam_One)) ]
That could be the problem here.

Best,
Luke




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References: 
 >AudioUnit - CarbonView - Toggling BevelButton (From: mark erickson <email@hidden>)
 >Re: AudioUnit - CarbonView - Toggling BevelButton (From: Luke Bellandi <email@hidden>)

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