points.push_back(Gdk::Point(area.get_x()+area.get_width()/3,area.get_y()+area.get_height()));
points.push_back(Gdk::Point(area.get_x()+area.get_width()/2,area.get_y()+area.get_height()));
window->draw_polygon(gc,true,points);
points.push_back(Gdk::Point(area.get_x()+area.get_width()/3,area.get_y()+area.get_height()));
points.push_back(Gdk::Point(area.get_x()+area.get_width()/2,area.get_y()+area.get_height()));
window->draw_polygon(gc,true,points);