Re: request for g_nullify_pointer and a question about weak refs
- From: Owen Taylor <otaylor redhat com>
- To: Tim Janik <timj gtk org>
- Cc: Sven Neumann <sven gimp org>, Gtk+ Developers <gtk-devel-list gnome org>
- Subject: Re: request for g_nullify_pointer and a question about weak refs
- Date: 01 Aug 2001 18:50:08 -0400
Tim Janik <timj gtk org> writes:
> On 1 Aug 2001, Sven Neumann wrote:
>
> > Hi,
> >
> > can we please introduce something like gtk_widget_destroyed() to
> > GLib or GObject? Despite from being horribly bad named,
> > gtk_widget_destroyed() is a very useful function for closures and
> > destroy_notfiers, but it should definitely live in GLib. I'd
> > suggest g_nullify_pointer() and I'd vote for marking
> > gtk_widget_destroyed() as deprecated once we have a better named
> > function.
>
> i think we discussed this earlier, at least partially.
>
> owen basically argued in favour of keeping
> void gtk_widget_destroyed(gpointer ignored_arg, gpointer *nullify_location);
> since:
> 1) it's usefull to connect to a bunch of signals, without even needing
> to use _swapped variants.
> 2) people know it already, and it probably has been deployed in a bunch of
> third-party code.
Well, yes, I argued for 2) - there was no reason to deprecate something
that still worked fine.
But no, I didn't argue that we should keep it because it was the
best way of doing things.
What I argued was that rather than having a convenience handler,
we should add a facility to glib to do this. And submitted
a patch to do this (Subject: convenience functions)
In the discussion of how they should be named, I think:
void g_object_add_weak_pointer (GObject *object,
gpointer *location);
void g_object_remove_weak_pointer (GObject *object,
gpointer *location);
Were preferred.
Regards,
Owen
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