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Re: "unlockFocus called too many time" console message

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Re: "unlockFocus called too many time" console message

Subject: Re: "unlockFocus called too many time" console message
From: James Walker <email@hidden>
Date: Tue, 11 Aug 2009 14:56:30 -0700

I wrote:

When a modeless Cocoa window is closed by clicking the close widget, I see a console message saying "unlockFocus called too many time." (sic). It doesn't happen if the window is closed using the File:Close menu item. I set a breakpoint on NSLog, and saw a stack starting like this:
NSLog
-[NSView unlockFocus]
-[NSControl mouseDown]
-[_NSThemeWidget mouseDown]
-[NSWindow sendEvent:]
carbonAppWindowMouseHandler
(none of which is my code) Does this look like an OS bug? (10.5.7)

For the record, I tracked this down a function of mine that was using NSGraphicsContext to do Cocoa drawing in a Carbon window. Once I surrounded the code with [NSGraphicsContext saveGraphicsState] and [NSGraphicsContext restoreGraphicsState], no more ungrammatical console messages, and also some sporadic crashes seem to be fixed. -- James W. Walker, Innoventive Software LLC <http://www.frameforge3d.com/> _______________________________________________

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  >"unlockFocus called too many time" console message (From: James Walker <email@hidden>)




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