Re: Strange NSSlider / NSUserDefaults interaction

FROM : Michael Jurewitz
DATE : Wed Aug 30 19:33:24 2006

Hi Stephen,

I'd encourage you to file a radar ( https://bugreport.apple.com ) 
against NSSlider with as much info as you can provide (including the 
sample project you created).  Please also include as much information 
about your particular system as possible in the bug.

Thanks!

-Michael Jurewitz

*********************************************
Developer Technical Support Engineer

<email_removed>
*********************************************

On Aug 30, 2006, at 9:32 AM, Stephen Deken wrote:

> 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
> stephen.<email_removed>
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