How to move icons between TImageLists

Problem/Question/Abstract:

How to move icons between TImageLists

Answer:

procedure TForm1.Button1Click(Sender: TObject);
var
  ico: TIcon;
begin
  ico := TIcon.Create;
  try
    Imagelist1.GetIcon(0, ico);
    Imagelist2.AddIcon(ico);
  finally
    ico.Free;
  end;
end;