On Sat, 2007-10-06 at 13:09 +0200, Bastiaan Veelo wrote:
> Hi,
>
> I am writing my own widget, and while looking at the widgets in GTK I
> notice the following.
>
> If a widget draws on its parent GdkWindow, you generally see
>
> > widget->window = gtk_widget_get_parent_window (widget);
> > g_object_ref (widget->window);
>
> But widget->window is not g_object_unref-ed anywhere in the widget
> implementation. Why shouldn't it?
They are unreffed, it just takes a little while getting used to
reading the object oriented C code :)
Notice:
gtkbutton.c::realize() does what you say, get_parent_window(),g_object_ref().
gtkbutton.c::unrealize() does some gtkbutton specific things, and chains up
to the parent implementation with:
GTK_WIDGET_CLASS (gtk_button_parent_class)->unrealize (widget);
gtkwidget.c::unrealize() is the implementation that it will fallback
on, thats where widget->window will be unreffed if
GTK_WIDGET_NO_WINDOW(widget).
Cheers,
-Tristan
_______________________________________________
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
