GUI_APP_MAIN
{
  TopWindow w;
  ArrayCtrl ac;

  w.AddChild(&ac);
  ac.HSizePosZ().VSizePosZ();

  ac.AddColumn("1");
  ac.AddColumn("2").Ctrls<Option>();
  ac.Add("one",true);
  ac.Add("two",false);
  
  StringStream ss;
  ss.SetStoring();
  ac.Serialize(ss);
  ac.Remove(0); // row count changed,
  // and count of child controls changed too

  ss.Seek(0);
  ss.SetLoading();
  ss.LoadThrowing();
  try {
    ac.Serialize(ss);
  } catch(LoadingError) {
    PromptOK("Exception caught!");
  }
}

void   Ctrl::Serialize(Stream& s)
{
...
	for(Ctrl *q = GetFirstChild(); q; q = q->GetNext())
		q->Serialize(s);
}