C#实现闪动托盘图标效果的方法

/// <summary>
/// 设置托盘显示的图标
/// </summary>
/// <param name="index">图像列表中图片的索引</param>
private void setIconImg(int index)
{
  Image img = this.imgIcon.Images[index];
  Bitmap b = new Bitmap(img);
  Icon icon = Icon.FromHandle(b.GetHicon());
  this.niMain.Icon = icon;
}

/// <summary>
/// 定时器切换图标显示
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tmrIcon_Tick(object sender, EventArgs e)
{
  if (iconFlag)
  {
    this.setIconImg(1);
    iconFlag = !iconFlag;
  }
  else
  {
    this.setIconImg(2);
    iconFlag = !iconFlag;
  }
}

/// <summary>
/// 关闭窗体时隐藏窗体显示托盘图标
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void FrmMain_FormClosing(object sender, FormClosingEventArgs e)
{
  e.Cancel = true;
  this.Hide();
  this.niMain.Visible = true;
}

namespace NotifyIconDemo
{
  public partial class FrmMain : Form
  {
    //切换图片的标识
    private bool iconFlag = false;
    //系统是否运行
    private bool isRun = false;
    /// <summary>
    ///
    /// </summary>
    public FrmMain()
    {
      InitializeComponent();
      //设置icon显示的图片
      this.setIconImg(0);
    }
    /// <summary>
    /// 设置托盘显示的图标
    /// </summary>
    /// <param name="index">图像列表中图片的索引</param>
    private void setIconImg(int index)
    {
      Image img = this.imgIcon.Images[index];
      Bitmap b = new Bitmap(img);
      Icon icon = Icon.FromHandle(b.GetHicon());
      this.niMain.Icon = icon;
    }
    /// <summary>
    /// 显示主窗体
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void tsmiMain_Click(object sender, EventArgs e)
    {
      //显示主窗体
      this.Visible = true;
      this.WindowState = System.Windows.Forms.FormWindowState.Normal;
      //隐藏托盘图标
      this.niMain.Visible = false;
      this.Show();
    }
    /// <summary>
    /// 退出
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void tsmiExit_Click(object sender, EventArgs e)
    {
      //设置托盘的提示信息
      this.niMain.BalloonTipText = "成功退出Demo!";
      this.niMain.BalloonTipTitle = "退出";
      this.niMain.ShowBalloonTip(1000*3);
      //延迟退出
      Thread.Sleep(1000 * 2);
      //释放托盘图标资源
      this.niMain.Dispose();
      //终止线程
      Application.ExitThread();
    }
    /// <summary>
    /// 最小化时隐藏窗体，显示托盘图标
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void FrmMain_SizeChanged(object sender, EventArgs e)
    {
      if (this.WindowState == FormWindowState.Minimized)
      {
        this.Hide();
        this.niMain.Visible = true;
      }
    }
    /// <summary>
    /// 关闭窗体时隐藏窗体显示托盘图标
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void FrmMain_FormClosing(object sender, FormClosingEventArgs e)
    {
      e.Cancel = true;
      this.Hide();
      //this.ShowInTaskbar = false;//取消窗体在任务栏的显示
      this.niMain.Visible = true;
    }
    /// <summary>
    /// 加载窗体时隐藏窗体
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void FrmMain_Load(object sender, EventArgs e)
    {
      this.Hide();
    }
    /// <summary>
    /// 定时器切换图标显示
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void tmrIcon_Tick(object sender, EventArgs e)
    {
      if (!this.isRun)
      {
        return;
      }
      if (iconFlag)
      {
        this.setIconImg(1);
        iconFlag = !iconFlag;
      }
      else
      {
        this.setIconImg(2);
        iconFlag = !iconFlag;
      }
    }
    /// <summary>
    /// 点击运行菜单
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void tsmiRun_Click(object sender, EventArgs e)
    {
      this.tsmiRun.Enabled = false;
      this.tsmiStop.Enabled = true;
      //设置运行状态
      this.isRun = true;
    }
    /// <summary>
    /// 点击停止菜单
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void tsmiStop_Click(object sender, EventArgs e)
    {
      this.tsmiRun.Enabled = true;
      this.tsmiStop.Enabled = false;
      //设置为停止状态
      this.isRun = false;
      //恢复图标显示
      this.setIconImg(0);
    }
  }
}