- Gtk::TreeModelColumn<bool> selected; // not used ATM
- Gtk::TreeModelColumn<ARDOUR::AudioPort *> port;
- Gtk::TreeModelColumn<std::string> label;
+ Gtk::TreeModelColumn<bool> selected; // not used ATM
+ Gtk::TreeModelColumn<boost::weak_ptr<ARDOUR::AudioPort> > port;
+ Gtk::TreeModelColumn<std::string> label;