Thank you all for your patience and kindness in educating me.
I appreciate it very much. I will sub-class which is what I have previously
done.
This was, for me, a bit of an experiment (which failed). But that's also a good
result.
Thanks again.
Peter
On 2012-04-02, at 12:44 AM, Jens Alfke wrot
On Mar 31, 2012, at 6:46 PM, Peter Teeson wrote:
> In my app there is only the one NSMatrix instance
There's no way to tell, really. For all I know, the Open or Save panels might
use NSMatrix. Or the Find panel or the font panel. Heck, I believe in the old
days of OpenStep, menus were impleme
Den 03:46 1. april 2012 skrev Peter Teeson følgende:
> Thanks very much for your input guys.
>
> David:
> I had carefully read the Categories and Extensions page in OBJ-C Programming
> Language.
> And, based on the first paragraph, assumed I could add functionality to
> drawRect for my particula
Thanks very much for your input guys.
David:
I had carefully read the Categories and Extensions page in OBJ-C Programming
Language.
And, based on the first paragraph, assumed I could add functionality to
drawRect for my particular case.
Stephen:
In my app there is only the one NSMatrix instan
On Mar 30, 2012, at 8:31 PM, Peter Teeson wrote:
> In a Document app I have an NSMatrix. I only need to override drawRect.
> Rather than using a sub-class, which seems overkill to me,
> I decided to try a Category instead.
Categories don't override, they replace. As has already been noted , t
On Mar 30, 2012, at 8:46 PM, Stephen J. Butler wrote:
> I wouldn't trust this to be very stable. And I don't see how
> subclassing is much more work than this.
Agreed. Absolutely do not do this — using categories to change the behavior of
existing classes is quite dangerous.
Also, why do you n
On Fri, Mar 30, 2012 at 10:31 PM, Peter Teeson wrote:
> Rather than using a sub-class, which seems overkill to me,
> I decided to try a Category instead. So here's what I did (and it seems to
> work.)
The problem with this approach is that you've replaced the drawRect:
for every NSMatrix instanc
Xcode 4.3 Lion 10.7.3
In a Document app I have an NSMatrix. I only need to override drawRect.
Rather than using a sub-class, which seems overkill to me,
I decided to try a Category instead. So here's what I did (and it seems to
work.)
But since this is the first time I've tried such a thing I'm a
