sigc::connection start_changed_connection;
sigc::connection end_changed_connection;
sigc::connection name_changed_connection;
sigc::connection changed_connection;
sigc::connection flags_changed_connection;
sigc::connection start_changed_connection;
sigc::connection end_changed_connection;
sigc::connection name_changed_connection;
sigc::connection changed_connection;
sigc::connection flags_changed_connection;