Re: [Pyobjc-dev] Re: interface builder queries

[Ronald O. <ous...@ci...>]

On Friday, 29 August 2003, at 13:51, Michael Hudson wrote:

>> Thanks for reminding me of this issue. I had noticed this when
>> building the preference panes, but didn't think this was very
>> important at the time. I'll see what I can do about this, this may be
>> a hard problem.
>
> It looks it.  There's this intriguingly named function
> _NSBundleAddClassesAndNotify, but I don't think you're expected to
> call it...

Hmm, I hadn't looked at global functions yet. The private methods 
didn't look interesting.

>
> Also, the feeling I get is that there's lot of hacking done to get
> this sort of thing to work from Java, and it would probably take
> someone from Apple to do the same for Python.  That may be too
> pessimistic, though.

We probably need support from Apple to get this to work reliably, I 
haven't found a documented API to register our classes.

>
> The nicest answer would be arrange for our bundle to load itself into
> some subclass of NSBundle, but that doesn't look possible (and Mach-O
> bundles don't even seem to have init sections, which rules out one
> scary hack that occurred to me).

They seem to have init sections, and you can use the +load method of 
classes as well. I use the latter to bootstrap Python based bundles, 
because I can get at the current bundle that way, which is handy for 
locating resources such as the python code.

My current idea for a hack to implement this is to dynamicly replace 
the 'isa' pointer of Python based bundles from that +load method. As 
longs as IB uses [bundle classNamed:] we would get a working situtation 
(although using an extremely ugly hack).

This seems to be the week for ugly hacks, I'm working on a full-screen 
application (using PyObjC of course) that uses pop-up buttons. Those 
don't work in full-screen mode, the pop-up menu seems to be behind my 
full-screen window. I've already filed a bug after someone else noticed 
he hadn't had any luck getting this to work and just avoids pop-up 
buttons. I haven't found a way to hack around this limitation :-(.

Ronald