_item->set_fill_color (ARDOUR_UI::config()->get_canvasvar_ControlPointFill());
_item->set_outline_color (ARDOUR_UI::config()->get_canvasvar_ControlPointOutline());
_item->set_data ("control_point", this);
_item->set_fill_color (ARDOUR_UI::config()->get_canvasvar_ControlPointFill());
_item->set_outline_color (ARDOUR_UI::config()->get_canvasvar_ControlPointOutline());
_item->set_data ("control_point", this);