/// <summary>
/// Adds a <see cref="QuitMenuItem"/> to the end of the <see cref="MenuItemCollection"/>.
/// </summary>
public void AddQuit()
{
if (Owner.IsInvalid)
{
throw new InvalidHandleException();
}
QuitMenuItem item = new QuitMenuItem(new SafeControlHandle(Libui.MenuAppendQuitItem(Owner.Handle)));
base.Add(item);
}
