类似QQ的抖动窗体的实现

private void button1_Click(object sender, EventArgs e)        {            int i, j, m, n, k,sleepTime =2;               //定义三个变量            for (i = 1; i <= 5; i++)          //循环次数            {                for (j = 1; j <= 5; j++)                {                    this.Top += 1;                    System.Threading.Thread.Sleep(sleepTime);           //当前线程指定挂起的时间                }                for (m = 0; m < 5; m++)                {                    this.Left += 1;                    System.Threading.Thread.Sleep(sleepTime);                }                for (k = 1; k <= 5; k++)                {                    this.Top -= 1;                    System.Threading.Thread.Sleep(sleepTime);                }                for (n = 0; n < 5; n++)                {                    this.Left -= 1;                    System.Threading.Thread.Sleep(sleepTime);                }            }        }