I suspect you are just assigning your ivar without retaining the
colour. It gets autoreleased and so crashes when you access it later
(stale reference).
blueColor probably continues to work because (as an internal
optimisation) it just so happens that that is a singleton and isn't
autoreleased, so even though you only have a weak reference to it, it
remains valid.
A review of memory management in general should set you straight.
http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/
cheers, Graham
On 26 Jul 2008, at 7:40 am, Ashley Perrien wrote:
I have a custom NSView that contains as an instance variable a
color. If I set the color in init as lineColor = [NSColor
blueColor]; all is well. If instead I use [NSColor
colorWithCalibratedRed: 0.5 green: 0.5 blue: 1.0 alpha: 1.0], the
program crashes if I try and access or change the color later. The
initial draw using it is just fine. But the next time it's redrawn
or if I change the color, everything crashes. I have the exact same
problem in 2 completely different applications. I'd like to be able
to initialize the colors with something other than the default
redColor, blueColor, etc. I've also tried one or two of the other
ways to specify values and have had the same problem. Any ideas on
what's going on?
Ashley Perrien
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