base_rect->set_x0 (0);
base_rect->set_y0 (0.0);
base_rect->set_y1 (trackview.current_height() - 1.0);
- base_rect->set_outline_what (0);
+ base_rect->set_outline_what (ArdourCanvas::Rectangle::What (0));
if (!is_automation_ghost()) {
base_rect->hide();