Re: AUView painting
Re: AUView painting
- Subject: Re: AUView painting
- From: Michael Hopkins <email@hidden>
- Date: Fri, 23 Sep 2005 10:03:11 -0700
Michael,
CoreAudio does not provide any specific API for drawing. Drawing your
view is accomplished via the standard mechanisms that MacOS provides
based on the api you choose (carbon, or cocoa). That being said,
since you are using carbon, your best bet is probably to use HIViews
to implement your custom UI. You would register specific handlers for
drawing in response to the kEventControlDraw message.
For more information about HIViews, see:
http://developer.apple.com/documentation/Carbon/Conceptual/HIViewDoc/
HIView_concept/chapter_1_section_4.html#//apple_ref/doc/uid/
TP30000923-CH204-TPXREF105
There are also many excellent examples (although not core-audio
specific that can be found on developer.apple.com in the Carbon
reference library. Just do a search on HIView).
If you decide not to go that route, you need to install a window
event handler on your window and draw in response to the
kEventWindowDrawContent event.
See: http://developer.apple.com/documentation/Carbon/Conceptual/
HandlingWindowsControls/index.html
However, if you have never done any carbon programming, your best bet
might be to write your UI in cocoa since it is a bit less complex.
You can use FilterDemo in the SDK as an example.
Hope this helps!
-michael
On Sep 23, 2005, at 9:02 AM, john smith wrote:
Thanks for your answer.
From: Jens Alfke <email@hidden>
To: john smith <email@hidden>
CC: email@hidden
Subject: Re: AUView painting
Date: Fri, 23 Sep 2005 08:18:52 -0700
On Sep 23, 2005, at 5:12 AM, john smith wrote:
I have an AU, with an attached AUView. The view generates it's
window, but I cannot figure out how to update it.
Using VST etc. I'm used to doing my painting in response to a
paint () or similiar call.
However, I'm unable to find anything similiar in the AUView class.
If you're implementing an AUView, you'll need to know how to use
the Cocoa frameworks.
No, sorry, I was not being precise enough: I'm doing a Carbon plug-
in, not Cocoa.
Thanks for the try though.
Greets,
Michael Olsen
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