private void ShowMedalMessage(Medal medal)
        {
            if (null == medal) return;

            var gotAMedal = new GotAMedal(medal);
            Items.Add(gotAMedal);
            gotAMedal.水平方向に中央揃え();
            gotAMedal.垂直方向に中央揃え();
            DrawingPreparers.Add(gotAMedal.GetDrawingPreparer());
        }
 public GotAMedal(Medal medal)
 {
     Text = string.Format("{0}メダルを獲得しました!!", medal.Difficulty == Difficulty.Normal ? "銀" : "金");
     LifeTime = TimeSpan.FromSeconds(2d);
     Color = Color.White;
     Width = 500;
     Height = 30;
 }