通過觀察可知，360安裝動畫是幾個個圓不停的放大的過程。也就是同心圓半徑不同的放大。

我利用五個圓，做出類似的效果，為了，區分效果，我設定五個圓利用不同的畫筆。

下面是具體的程式碼：

這個五個半徑做為全域性變數
        int x1 = 200;
        int x2 = 100;
        int x3 = 50;
        int x4 = 150;
        int x5 = 250;

具體的實現放在timer控制元件中

x1 = x1 + 10;
            if (x1 > 300) {
                x1 = 50;
            }
            x2 = x2 + 10;
            if (x2 > 300)
            {
                x2 = 50;
            }
            x3 = x3 + 10;
            if (x3 > 300)
            {
                x3 = 50;
            }
            x4 = x4 + 10;
            if (x4 > 300)
            {
                x4 = 50;
            }
            x5 = x5 + 10;
            if (x5 > 300) {
               
                x5 = 50;
            }
            this.Refresh();
            Graphics ghs1 = this.CreateGraphics();
            Graphics ghs2 = this.CreateGraphics();
            Graphics ghs3 = this.CreateGraphics();
            Graphics ghs4 = this.CreateGraphics();
            Graphics ghs5 = this.CreateGraphics();
            Pen myPen1 = new Pen(Color.Firebrick, 2);
            Pen myPen2 = new Pen(Color.Yellow, 2);
            Pen myPen3 = new Pen(Color.ForestGreen, 2);
            Pen myPen4 = new Pen(Color.Fuchsia, 2);
            Pen myPen5 = new Pen(Color.Goldenrod, 2);
            ghs1.DrawEllipse(myPen1, 400 - x1 / 2, 300 - x1 / 2, x1, x1);
            ghs2.DrawEllipse(myPen2, 400 - x2 / 2, 300 - x2 / 2, x2, x2);
            ghs3.DrawEllipse(myPen3, 400 - x3 / 2, 300 - x3 / 2, x3, x3);
            ghs4.DrawEllipse(myPen4, 400 - x4 / 2, 300 - x4 / 2, x4, x4);
            ghs5.DrawEllipse(myPen5, 400 - x5 / 2, 300 - x5 / 2, x5, x5);