ops_items.push_back (CheckMenuElem (_("Display delta to edit cursor"), sigc::mem_fun (*this, &MainClock::display_delta_to_edit_cursor)));
Gtk::CheckMenuItem* c = dynamic_cast<Gtk::CheckMenuItem *> (&ops_items.back());
if (_primary) {
ops_items.push_back (CheckMenuElem (_("Display delta to edit cursor"), sigc::mem_fun (*this, &MainClock::display_delta_to_edit_cursor)));
Gtk::CheckMenuItem* c = dynamic_cast<Gtk::CheckMenuItem *> (&ops_items.back());
if (_primary) {