Re: GtkTreeStore and row deletion

[Pierre Wieser <pwieser trychlos org>]

----- "David NeÄas" <yeti physics muni cz> a Ãcrit :

> On Wed, Sep 02, 2009 at 02:56:12PM +0200, pwieser trychlos org wrote:
> > ----- "Kristian Rietveld" <kris gtk org> a Ãcrit :
> >
> > > I don't fully get the problem you are describing.  If I understand
> it
> > > correctly, you have a tree model where each node points to a
> GObject.
> > > Isn't it the case that when a row is destroyed that contains a
> > > G_TYPE_OBJECT column, this will unref the value in that column?
> >
> > Are you affirmative about that ?
>
> Definitely.
>
> > It would be great in this case, but appears as undocumented. Or, is
> it ?
> > However, in the previous version, when I unreffed the object from
> my
> > GSList, I don't have observed that same object be (silently)
> unreffed
> > a second time when the row was deleted. I think Gtk would have
> warned
> > me in this case...
>
> Maybe you forgot to release new references from gtk_tree_model_get()
> (it
> produces copies, i.e. if you get an object you get a new reference;
> similarly, if you get a string you get a newly allocated copy).
>
> Yeti

Oop's!
> From gtk_tree_store_set(): "The value will be copied or referenced
by the store if appropriate". I may have missed this !
I will check this this evening, by counting instance_init() and
instance_dispose() respective occurences.

Thanks a lot for your explanations.

Regards
Pierre