/// <include file="documentation.xml" path="/UI/Common/OnKeyDown/*"/>
  protected override void OnKeyDown(KeyEventArgs e)
  {
    base.OnKeyDown(e);

    if(!e.Handled && PGPUI.IsCloseKey(e))
    {
      Close();
      e.Handled = true;
    }
  }
  /// <include file="documentation.xml" path="/UI/Common/OnKeyDown/*"/>
  protected override void OnKeyDown(KeyEventArgs e)
  {
    base.OnKeyDown(e);

    if(!e.Handled && PGPUI.IsCloseKey(e)) // let the form be closed by pressing escape
    {
      Close();
      e.Handled = true;
    }
  }