sld_speed->signal_value_changed.connect(sigc::mem_fun(this, &TrainPanel::speed_slider_changed));
add(*(tgl_forward=new GLtk::Toggle(res)));
tgl_forward->set_text("Fwd");
tgl_forward->set_geometry(GLtk::Geometry(geom.w-30, geom.h-59, 20, 27));
sld_speed->signal_value_changed.connect(sigc::mem_fun(this, &TrainPanel::speed_slider_changed));
add(*(tgl_forward=new GLtk::Toggle(res)));
tgl_forward->set_text("Fwd");
tgl_forward->set_geometry(GLtk::Geometry(geom.w-30, geom.h-59, 20, 27));