tgl_enabled->set_geometry(GLtk::Geometry(10, 10, 40, 27));
tgl_enabled->set_value(timetable.is_enabled());
tgl_enabled->signal_toggled.connect(sigc::mem_fun(this, &TimetableDialog::enabled_toggled));
tgl_enabled->set_geometry(GLtk::Geometry(10, 10, 40, 27));
tgl_enabled->set_value(timetable.is_enabled());
tgl_enabled->signal_toggled.connect(sigc::mem_fun(this, &TimetableDialog::enabled_toggled));