private MenuItem AppendSubmenuItem(MenuItem parent, Action<MenuItem, PopupTargetInfo> action, string caption)
{
MenuItem menu = parent.Insert(parent.Count);
menu.Caption = caption;
menu.OnClick = action;
return menu;
}
private MenuItem AppendSeparator(MenuItem parent)
{
MenuItem menu = parent.Insert(parent.Count);
menu.Caption = "-";
return menu;
}
