[Glade-users] Signal question.

[Alexey Kurochkin]

On Mon, 2008-10-13 at 15:34 -0500, Peter Keller wrote:
> On Mon, Oct 13, 2008 at 03:29:30PM -0500, Alexey Kurochkin wrote:
> > I do not think GtkObject's "destroy" is the right signal. You might want
> > to try connecting gtk_widget_hide_on_delete() to "delete-event" signal
> > on the widget, or any custom function for that matter which would call
> > gtk_widget_hide() and return TRUE.
> 
> Ok, apparently I have found some bad info on the internet (really?), because
> the examples I found for using glade-3 implied that the signal functions
> had this prototype:
> void some_func(GTKWidget *widget, gpointer user_data);
> 
> Is that not correct? If not, then what is the type and meaning of the
> return value for these handler functions?

Nope. All are different. In this particular case it is:
gboolean user_function (GtkWidget *widget, GdkEvent *event, gpointer user_data);
Return TRUE to stop further propagation of the event (which would destroy the widget otherwise).
As described in the manual:
http://library.gnome.org/devel/gtk/stable/GtkWidget.html#GtkWidget-delete-event