On 26 May 2009, at 15:51, Joar Wingfors wrote:
On 26 maj 2009, at 07.27, Mike Abdullah wrote:
You've missed the big warning somewhere in the docs that most of
AppKit is not threadsafe. Why do you want to create a window on
another thread? What is wrong with doing it on the main thread?
Mike,
Your comment is correct in general, but according to the thread
safety guidelines you're supposed to be able to create windows on
background threads:
<http://developer.apple.com/documentation/Cocoa/Conceptual/Multithreading/ThreadSafetySummary/ThreadSafetySummary.html#//apple_ref/doc/uid/10000057i-CH12-123364
>
That said, it seems that it's not safe to create views on background
threads, so that's at least one thing that's not right in the few
lines of code that was quoted.
Wow, I had no idea of this particular aspect of the rules. My
suspicion is this exists to accomodate Cocoa's ability to use window
objects for caching a view's contents to an image. Maybe the act of
showing a window is what is breaking on a secondary thread.
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