程序最小化时候模仿QQ这样的效果怎么做？

Question

如题

Answer 1

   private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            this.Show();
            this.ShowInTaskbar = true;
            this.WindowState = FormWindowState.Normal;
        }
        private void Form1_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
            {
                this.Hide();
                this.notifyIcon1.Visible = true;
            }
        }        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (e.CloseReason == CloseReason.UserClosing)
            {
                e.Cancel = true;
                this.ShowInTaskbar = true;
                this.Hide();
            }
        }