// IMPORTANT: doesn't work with JTattoo (so not currently in Stefan's OS). listeners are only called on first show+hide
// r : runnable or voidfunc(bool)
static JCheckBoxMenuItem jCheckBoxMenuItem_dyn(S text, IF0<Bool> checked, O r) {
  JCheckBoxMenuItem mi = jCheckBoxMenuItem(text, false, r);
  if (checked != null) bindToComponent(mi, r {
    bool b = isTrue(checked!);
    ifdef jCheckBoxMenuItem_dyn_debug
      print("jCheckBoxMenuItem_dyn: " + b + " " + text);
    endifdef
    setChecked(mi, b);
  }, r {
    ifdef jCheckBoxMenuItem_dyn_debug
      print("jCheckBoxMenuItem_dyn: hiding " + text);
    endifdef
  });
  ret mi;
}

static JCheckBoxMenuItem jCheckBoxMenuItem_dyn(S text, IF0<Bool> checked, IVF1<Bool> r) {
  ret jCheckBoxMenuItem_dyn(text, checked, (O) r);
}

Began life as a copy of #1006523