+ latency_hbox.pack_start (latency_button, false, false);
+ latency_hbox.pack_start (latency_display, false, false);
+ latency_frame.add (latency_hbox);
+
+ output_selector.set_min_height_divisor (2);
+ input_selector.set_min_height_divisor (2);
+
+ pack_start (latency_frame);
+ pack_start (output_selector, true, true);
+ pack_start (input_selector, true, true);
+
+ latency_button.signal_toggled().connect (mem_fun (*this, &PortInsertUI::latency_button_toggled));