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Getting bound UI elements to update during a loop

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Getting bound UI elements to update during a loop

Subject: Getting bound UI elements to update during a loop
From: Rick Hoge <email@hidden>
Date: Thu, 14 Apr 2005 10:50:45 -0400

I have a numerical fitting application in which I would like to display the chi squared value and other parameters on the fly during the fit procedure. I'd like to do this by binding an NSTextField to an instance variable chiSquared

I have set up instance variables I want to display, added set and get methods, and call the 'set' method inside the fitting loop. However the NSTextField does not update until the end of the fitting procedure (i.e. the end of the runloop). It seems like the bindings are updated once per runloop - does anyone know how I could force more frequent updates to bound UI elements?

I have tried sending displayIfNeeded to the window when updates should occur but this does not seem to help. The only way I'm getting updates in the loop is to send setFloatValue: to the NSTextField. I use NSProgressIndicators all the time inside loops but not with bindings...

thanks for any hints on this!

Rick

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