Re: Need clarification on categories
Re: Need clarification on categories
- Subject: Re: Need clarification on categories
- From: Bill Cheeseman <email@hidden>
- Date: Tue, 19 Mar 2002 12:32:38 -0500
on 02-03-19 11:37 AM, Erik M. Buck at email@hidden wrote:
>
I think you have overlooked something fundamental also because I can't
>
understand your question.
I guess what you and Ondra are both saying to me is: Have faith. Objective-C
will do what it's supposed to do.
The reason I'm suffering feelings of doubt is that the method I'm trying to
implement in a category is a delegate method, and it doesn't get called when
I think it should. Specifically, the NSControl class reference document says
the controlDidBeginEditing: delegate method will be called whenever a
text-based field is edited in any control that implements the method. But
when I implement the method in a category on NSControl, it doesn't get
called. For example, I click into a field in an NSForm and type a character,
but controlDidBeginEditing: doesn't get called.
OK, I'll implement it in my window controller and make sure the form
appoints the controller as delegate, and everything will work fine. But I'm
curious why it doesn't work when implemented in the category. Is this
another exception to the rule about categories, or am I still missing
something fundamental?
--
Bill Cheeseman - email@hidden
Quechee Software, Quechee, Vermont, USA
http://www.quecheesoftware.com
The AppleScript Sourcebook -
http://www.AppleScriptSourcebook.com
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http://members.valley.net/croquetvermont
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