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Strange NSSlider / NSUserDefaults interaction
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Strange NSSlider / NSUserDefaults interaction


  • Subject: Strange NSSlider / NSUserDefaults interaction
  • From: Stephen Deken <email@hidden>
  • Date: Wed, 30 Aug 2006 11:32:24 -0500

Hello all,

I've just found a rather strange bug that impacts NSSliders when an invalid registered default is written to NSUserDefaults. Once the invalid value is written, all NSSliders will no longer track the mouse -- instead they will 'snap back' when the mouse leaves a region loosely defined by the height of the control and the width of the screen.

I have a simple project (too large to post here) that demonstrates this problem, but the offending line is this:

[[NSUserDefaults standardUserDefaults] registerDefaults: [NSDictionary dictionaryWithObjectsAndKeys: [NSColor blackColor], @"dumb2", nil]];

Instead of [NSColor blackColor], I should have written [NSArchiver archivedDataWithRootObject:[NSColor blackColor]] -- that resolves the problem.

Has anyone else seen this behavior?  Is there a rdar: bug on this?

Stephen Deken
email@hidden
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