Sorry, still no control update
Sorry, still no control update
- Subject: Sorry, still no control update
- From: Chris Johnson <email@hidden>
- Date: Sun, 20 Jun 2010 18:59:42 -0400
I'm sorry, I'm still nowhere with the control update situation. I'm
trying to make controls in a Cocoa view go to the setting
corresponding to what's been saved as parameter settings- the view
will not update.
Yes, FilterDemo does refresh its view on launch to the saved state:
it does this-
ComponentResult Filter::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if(result == noErr )
{
// in case the AU was un-initialized and parameters were changed,
the view can now
// be made aware it needs to update the frequency response curve
PropertyChanged(kAudioUnitCustomProperty_FilterFrequencyResponse,
kAudioUnitScope_Global, 0 );
}
return result;
}
I need to update controls attached to parameters that look like this,
as in the generic examples:
Float32 gain = GetParameter( kParam_One )/40;
The preset saving code won't help, because you know in the built
demos those presets don't do anything. Nothing happens.
I'm trying to find something reasonably bulletproof that works with
normal Cocoa controls as seen in Interface Builder.. notably NSSlider
and NSSlider in dial form. I'll work around the issues those present
if I can get the things to refresh and/or update their values from
code within Process (no, I won't be trying to update them every sample)
Chris Johnson
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