+ HSeparator* separator = manage (new HSeparator());
+ separator->set_name("TrackSeparator");
+ separator->set_size_request(-1, 1);
+ separator->show();
+
+ scroomer_placeholder.set_size_request (-1, -1);
+ scroomer_placeholder.show();
+ midi_scroomer_size_group->add_widget (scroomer_placeholder);
+
+ time_axis_vbox.pack_start (*separator, false, false);
+ time_axis_vbox.pack_start (time_axis_frame, true, true);
+ time_axis_vbox.show();
+ time_axis_hbox.pack_start (time_axis_vbox, true, true);
+ time_axis_hbox.show();
+ top_hbox.pack_start (scroomer_placeholder, false, false); // OR pack_end to move after meters ?
+