void mmc_port_chosen (MIDI::Port*,Gtk::RadioButton*, Gtk::Button*);
void mtc_port_chosen (MIDI::Port*,Gtk::RadioButton*, Gtk::Button*);
void midi_port_chosen (MIDI::Port*,Gtk::RadioButton*, Gtk::Button*);
void mmc_port_chosen (MIDI::Port*,Gtk::RadioButton*, Gtk::Button*);
void mtc_port_chosen (MIDI::Port*,Gtk::RadioButton*, Gtk::Button*);
void midi_port_chosen (MIDI::Port*,Gtk::RadioButton*, Gtk::Button*);