gdk_c.set_rgb(r2,g2,b2);
gc->set_rgb_fg_color(gdk_c);
window->draw_rectangle(gc, true, ca.get_x()+i+2, ca.get_y()+height/2, 1, height/2);
gdk_c.set_rgb(r2,g2,b2);
gc->set_rgb_fg_color(gdk_c);
window->draw_rectangle(gc, true, ca.get_x()+i+2, ca.get_y()+height/2, 1, height/2);