xml = glade_xml_new(AVAHI_INTERFACES_DIR"avahi-discover.glade", NULL, NULL);
main_window = glade_xml_get_widget(xml, "main_window");
xml = glade_xml_new(AVAHI_INTERFACES_DIR"avahi-discover.glade", NULL, NULL);
main_window = glade_xml_get_widget(xml, "main_window");