Gtk::HScale *s = manage(new Gtk::HScale(adj_zoom));
s->set_draw_value(false);
//s->set_update_policy(Gtk::UPDATE_DELAYED);
//s->signal_event().connect(sigc::mem_fun(*this,&Dock_Navigator::on_scroll_event));
attach(*s,1,4,2,3,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
Gtk::HScale *s = manage(new Gtk::HScale(adj_zoom));
s->set_draw_value(false);
//s->set_update_policy(Gtk::UPDATE_DELAYED);
//s->signal_event().connect(sigc::mem_fun(*this,&Dock_Navigator::on_scroll_event));
attach(*s,1,4,2,3,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);