Hi Omar,
> I've been reading the tutorials at http://www.gnustep.it/nicola/Tutorials/
> and trying them out from memory, but using ProjectCenter instead of manually
> creating the GNUMakefile. When running my app, I kept getting an illegal
> operation. Upon closer inspection, I found the problem to be the following
> line:
>
> mainWnd = AUTORELEASE([NSWindow alloc]);
>
> mainWnd is a NSWindow* object declared in my AppController.h. When called
> from applicationWillFinishLaunching:, the line above caused an illegal
> operation. After removing the call to the AUTORELEASE() macro, it worked.
> Calling AUTORELEASE worked fine when adding an NSMenu* object to the app.
> The question is: when should I initialize an object with AUTORELEASE, and
> when shouldn't I?
AUTORELEASE doesn't initialize an object; AUTORELEASE(x) is the same as [x
autorelease] - so you don't want to send the -autorelease message to an
uninitialized NSWindow. What you probably want on that line is to call the
NSWindow initializer, -initWithContentRect:styleMask:backing:defer:.
> Also, coming from a iOS background, I am used to seeing [[objectClass alloc]
> init] for initialization, yet in GNUStep, it is done with [new]. What's the
> difference? Or when should I use [[alloc] init]?
There is no difference; [x new] is the same as [[x alloc] init].
However, my suggestion is to stick to [x autorelease] and [[x alloc] init]
instead of AUTORELEASE(x) or [x new].
Hope this helps,
Eric
_______________________________________________
Discuss-gnustep mailing list
[email protected]
https://lists.gnu.org/mailman/listinfo/discuss-gnustep
