Re: drawing NOW in a callback, boom!
Re: drawing NOW in a callback, boom!
- Subject: Re: drawing NOW in a callback, boom!
- From: Paul Cezanne <email@hidden>
- Date: Thu, 6 Jun 2002 06:41:10 -0400
At 11:30 AM -0700 6/5/02, Aram Greenman wrote:
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On Wednesday, June 5, 2002, at 09:49 AM, Paul Cezanne wrote:
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>I'm the original poster in this thread and there has been a lot of talk about how safe or unsafe threaded modifications to the UI are.
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>I believe I _have_ followed the guidelines, all my drawing calls are via NSBezierPath, which is allegedly safe.
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Did you try putting your code in an NSThread? I was able to easily recreate your problem in a pthread but not in an NSThread, just using the code from your original post. Also, it seems to crash (signal 10 or 11) on the -display call, not the drawing calls, so I don't think that's your problem.
that's not really an option since the pthreaded calls is from a cross platform library and we want to keep it that way. I'm getting enough resistance to Cocoa at work that I really don't want to fight a battle I'm not sure I want to win!
I do have the answer, basically I took the display call out and posted an NSEvent which I pickup in the main thread, the problem stops. I'll post a full solution, later today I hope.
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