Re: Use of GObject properties in GTK+ 2.0
- From: Havoc Pennington <hp redhat com>
- To: "Padraig O'Briain" <Padraig Obriain ireland sun com>
- Cc: gtk-devel-list gnome org
- Subject: Re: Use of GObject properties in GTK+ 2.0
- Date: 21 Feb 2001 09:59:39 -0500
"Padraig O'Briain" <Padraig Obriain ireland sun com> writes:
> A quick perusal of the GTK+ 2.0 code suggests that GtkObject arguments are
> implemented as GObject properties.
>
> In the GObject source code I came across the signals "properties_changed" and
> "notify".
>
> I did not find any code in gobject.c which connected what looks like the
> signal handlers, i.e. g_object_notify_property_changed() and
> g_object_property_changed(), to the "properties_changed" and "notify" signal.
> Did I miss something?
>
> Is the "properties_changed" signal in GObject a public interface which we
> can use to connect a signal handler to be invoked when the property changes?
>
> My interest in this is that the Accessibility API which we are trying to define
> needs to be able to add and remove what is Java termininology are property
> change listeners.
>
>
If you look at tests/testtreeview.c there's some code which uses the
notification.
I am totally mystified by why there are two signals,
properties_changed and also notify - I think there should be only
notify. But, maybe Tim can explain that.
Havoc
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