void populate_row (boost::shared_ptr<ARDOUR::Region>, Gtk::TreeModel::Row const &);
void update_row (boost::shared_ptr<ARDOUR::Region>);
bool update_subrows (boost::shared_ptr<ARDOUR::Region>, Gtk::TreeModel::Row const &, int);
void populate_row (boost::shared_ptr<ARDOUR::Region>, Gtk::TreeModel::Row const &);
void update_row (boost::shared_ptr<ARDOUR::Region>);
bool update_subrows (boost::shared_ptr<ARDOUR::Region>, Gtk::TreeModel::Row const &, int);