!7

p {
  final JComboBox cb = yesNoComboBox(false, voidfunc(bool b) { print("trigger: " + b) });
  onSelectedItem(cb, voidfunc(S s) { print("onSelectedItem: " + s); });
  addActionListener(cb, r { print("actionlistener. selectedItem: " + selectedItem(cb)); });
  addItemListener(cb, itemListener(r { print("itemlistener. selectedItem: " + selectedItem(cb)); }));
  showForm(+cb);
}