On Dec 1, 2010, at 15:43, k...@highrolls.net wrote:
> The code below explodes on the loadNibNamed call but I have done this many
> times ... where am I wrong?
>
> @interface About : NSPanel {
>
> }
>
>
> - (IBAction)about:(id)sender {
>
> About *aboutpanel = [[About alloc] init];
> [aboutpanel retain];
> BOOL ok = [NSBundle loadNibNamed:@"About" owner:aboutpanel];
> if(ok)
> {
> [NSApp runModalForWindow:aboutpanel];
> }
>
>
> }
>
>
> any help appreciated …
Hmmm… haven't you read the basic documentation about memory management in
Objective-C? What about NSWindow and NSPanel?
There are many things wrong in the little excerpt of code you provided. You
first create a new instance of your NSPanel's subclass "About" without using
one of 2 recommended initializers for NSWindow. After doing your alloc/init,
you even put a "retain" that is totally unnecessary. By doing alloc/init, you
already "own" aboutpanel, there is no need to retain it. That tells me, sorry
to say this, that you're missing some basic concepts of Objective-C.
Finally, although I guess that, in theory, you can have an instance of NSPanel
as the owner of a nib, I've never seen anything like it in the 15 years I've
been programming in Objective-C. Usually, the nib is owned by some controller
object, which manages the interface (view) with the data (model) driving the
view.
So, I think you should get a good book about the fundamentals of Objective-C
and Cocoa and start reading. I'm not even sure where to start to help!
You just can't slap a few methods here and there without thinking about what
you're doing, sorry. It doesn't work that way.
-Laurent.
--
Laurent Daudelin
AIM/iChat/Skype:LaurentDaudelin
http://www.nemesys-soft.com/
Logiciels Nemesys Software
laur...@nemesys-soft.com
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