Figuring out what's causing redrawing
Figuring out what's causing redrawing
- Subject: Figuring out what's causing redrawing
- From: Nick Zitzmann <email@hidden>
- Date: Thu, 13 May 2010 13:52:02 -0600
I've tried searching around but haven't found an answer to this. I have several views that are being constantly & apparently needlessly redrawn and I can't figure out why this is happening. How do I catch the culprit that is causing the views to be redrawn? The redrawing is appearing in the usual place, within a call to -[NSWindow displayIfNeeded] in the run loop.
I already tried the following:
1. Breaking on -[NSView setNeedsDisplayInRect:], but -drawRect: kept being called anyway, so whatever is causing this is circumventing this method.
2. Observing the value of -[NSView needsDisplay], but the value never changes, and it keeps getting redisplayed anyway. Apparently the value is a perpetual YES...
Nick Zitzmann
<http://www.chronosnet.com/>
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