options_table.attach(checkbutton_scale, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
checkbutton_scale.signal_toggled().connect(sigc::mem_fun(*this,&StateRotate_Context::refresh_scale_flag));
options_table.attach(checkbutton_scale, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
checkbutton_scale.signal_toggled().connect(sigc::mem_fun(*this,&StateRotate_Context::refresh_scale_flag));