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Re: Pref Panes and Instance Variables?
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Re: Pref Panes and Instance Variables?


  • Subject: Re: Pref Panes and Instance Variables?
  • From: "Josh M. Hurd" <email@hidden>
  • Date: Sun, 13 Jan 2002 00:34:24 -0800

OK I figured out what was wrong.

I had instantiated my subclass of NSPrefPane in Interface Builder making my connections to that instance.
This caused a second instance of my subclass to be created when the Nib loaded. Who knows which one had control, I think they both had a little here and there...
I thought this was how the Apple docs explained it but I must have mis-read something...

The correct answer is change the class of the File's Owner to my subclass of NSPrefPane then make connections to that.

Thanks list...

M

On Saturday, January 12, 2002, at 08:05 PM, Josh M. Hurd wrote:

Hello list,

I am having trouble with instance variables in my PrefPane.

I declare my variables in the header of my Principal Class like this:

@private
NSMutableArray *theAppList;
CFStringRef appID;

Then initialize them in initWithBundle like this:

- (id)initWithBundle:(NSBundle *)bundle
{
if ( ( self = [super initWithBundle:bundle] ) != nil )
{
appID = CFSTR("myPrefPaneBundleIdentifier");
theAppList = [NSMutableArray array];
}

return self;
}

Which is how Apple explains it in their PrefPane docs.
So far everything is OK.

I then fill my instance variable theAppList in mainViewDidLoad. This too works fine but when I return out of this method all my variables are killed. I set up a button which triggers a dump of these variables via NSLog which confirm they are NULL or empty.

I can't imagine that this is a limitation to the PrefPane framework so would someone kindly let me know what I am doing wrong?

Thanks!

M
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  • Follow-Ups:
    • Re: Pref Panes and Instance Variables?
      • From: Andreas Monitzer <email@hidden>
References: 
 >Pref Panes and Instance Variables? (From: "Josh M. Hurd" <email@hidden>)

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