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setting target and action for a NSSlider programmatically in a class that is not "file's owner" - how?
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setting target and action for a NSSlider programmatically in a class that is not "file's owner" - how?


  • Subject: setting target and action for a NSSlider programmatically in a class that is not "file's owner" - how?
  • From: Rua Haszard Morris <email@hidden>
  • Date: Fri, 16 May 2008 14:12:43 +1200

I'm trying to set the action for an NSSlider in a little helper class that is not the "file's owner" class associated with the window in the nib. At runtime, I get these console messages:

*** +[SliderHelper myAction:]: unrecognized selector sent to class 0xeb74380
HIToolbox: ignoring exception '*** +[SliderHelper myAction:]: unrecognized selector sent to class 0xeb74380' that raised inside Carbon event dispatch


This is how I'm setting this up:
- there's an NSObject subclass (call it MyDialog) containing IBOutlets for all the controls I care about.
- there's another NSObject subclass (call it SliderHelper) which is intended to automate some behaviour common to a few controls in the dialog (and other dialogs in future)
- MyDialog instantiates a SliderHelper and passes it an NSSlider* outlet referring to a slider
- SliderHelper sets up the target and action for the slider programmatically in an +initWithSlider: method..


+(id) initTestSlider:(NSSlider*)aSlider {
	SliderHelper* newOne = [[SliderHelper alloc] init];
	[newOne setSlider:aSlider];
	[[newOne slider] setTarget:self];
	[[newOne slider] setAction:@selector(myAction:)];
	return newOne;
}

- myAction: is a void returning method with no params, and it is implemented!

How can I make this work?

Note that if I set the target and action from MyDialog (with a MyDialog -myAction of course) it works, what am I missing here?

thanks
Rua HM.
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