Re: widget with label (reference counts)

[Tristan Van Berkom <vantr touchtunes com>]

        Thanks for the clarification;
do _all_ newly created GtkObjects start
with a floating reference and a reference count of 0 ?

Please correct me if I'm wrong:

- a GObject holds a "ref_count"
- a GtkObject holds a "floating" (flag or bool or something) (along with
GObject's ref_count)
- calling g_object_ref on a simple GObject will "ref_count++;"
- calling g_object_ref on a GtkObject type of GObject will "if
(++ref_count == 1) floating = FALSE;"
- calling g_object_unref on a "floating" GtkObject will finalize
- calling g_object_unref on a GtkObject with a ref_count of one will
finalize (of course)
- a GtkWindow usualy "floats" its entire lifespan

        Is this "floating" concept a new implementation or just
still around for legacy/compatability reasons ? If this is new;
what is the advantage of having a "floating state" along with 
a reference count ?

Thank you for any input on this,
        -Tristan



Havoc Pennington wrote:
> On Tue, Nov 12, 2002 at 03:21:01PM -0500, Tristan Van Berkom wrote:
> > I _think_ that:
> >
> > > b = gtk_button_new_with_label("hello!");
> >
> > G_OBJECT(GTK_WIDGET(b)->child)->ref_count == 1
> >
> > > b = gtk_button_new();
> > > l = gtk_label_new("hello!");
> > > gtk_container_add(b, l);
> >
> > G_OBJECT(GTK_WIDGET(b)->child)->ref_count == 2
>
> Nope; the initial refcount on gtk_label_new() is "floating" so is
> adopted by the container in gtk_container_add(), thus no extra
> reference is added.
>
> Havoc