Re: When is g_object_ref needed ?

[Tristan Van Berkom <tvb gnome org>]

Frédéric Terraza wrote:
> Thanks. But there are still some mysteries. For example, this sequence :
>
> my_pixmap = gdk_pixmap_new(...) ;
> my_gc = gdk_gc_new(my_pixmap) ;
> g_object_unref(my_pixmap) ;
> g_object_unref(my_gc) ;
>
> seems to lead to an error. I was told that g_object_unref(my_pixmap) ; 
> would unref my_gc too. And effectively, if I delete the 
> g_object_unref(my_gc) ; everything works fine.
>
> Are there some others examples of dependancies in GDK/GTK ? (colormaps, 
> for example ?)

Personally I have to say that I find this alarming, to me the
line:
    my_gc = gdk_gc_new (my_pixmap);
doesn't seem to imply that ownership of the newly created GdkGC
is given to the GdkDrawable. Furthermore it isn't documented
to in the api reference (at least not under gdk_gc_new() ).

I hate to ask you this but: Are you sure ? Can you reproduce
this in an isolated test case ?

Cheers,
                                   -Tristan