C#：实现托盘（任务栏图标与托盘图标互斥）

//字段：
     //当前子Form
        private CurrentForm childForm = null;

        //上次窗体的状态
        private FormWindowState lastFormState;

        //是否点击的是最小化按钮
        private bool isMinBoxHited;

//构造函数内
    this.ni_frmMain.Visible = false;


        #region 托盘相关代码

        #region 私有方法　处理窗体的　显示　隐藏　关闭(退出)

        /// <summary>
        /// 显示
        /// </summary>
        private void ShowMainForm()
        {
            this.Show();
            this.WindowState = this.lastFormState;
            this.Activate();

            this.ShowInTaskbar = true;  //任务栏中显示窗体图标
            this.ni_frmMain.Visible = false;//图盘中隐藏图标
        }

        /// <summary>
        /// 隐藏
        /// </summary>
        private void HideMainForm()
        {
            this.Hide();

            this.ShowInTaskbar = false;  //任务栏中显示窗体图标
            this.ni_frmMain.Visible = true;//图盘中隐藏图标
        }

        /// <summary>
        /// 关闭(退出)
        /// </summary>
        private void ExitMainForm()
        {
            if (MessageBox.Show("您确定要退出主程序吗？", "确认退出", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2) == DialogResult.OK)
            {
                this.ni_frmMain.Visible = false;
                this.Close();
                this.Dispose();
                Application.Exit();
            }
        }

        #endregion

        #region 右键菜单处理，显示　隐藏　退出

        /// <summary>
        /// 显示
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_notifyShow_Click(object sender, EventArgs e)
        {
            ShowMainForm();
        }

        /// <summary>
        /// 隐藏
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_notifyHide_Click(object sender, EventArgs e)
        {
            HideMainForm();
        }

        /// <summary>
        /// 退出
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_notifyExit_Click(object sender, EventArgs e)
        {
            ExitMainForm();
        }

        #endregion

        #region 私有方法　双击托盘上图标时，显示窗体

        private void ni_frmMain_DoubleClick(object sender, EventArgs e)
        {
            if (this.WindowState != FormWindowState.Minimized)
            {
                ShowMainForm();
            }
        }


        #endregion

        #region 点最小化按钮时，最小化到托盘

        private void frmMain_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState != FormWindowState.Minimized)
            {
                this.ShowInTaskbar = true;  //任务栏中窗体图标显示
                this.ni_frmMain.Visible = false;
                this.lastFormState = this.WindowState;
            }
        }


        #endregion

        #region 窗体关闭时最小化到托盘
        private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
        {
            //e.Cancel = true;
            //this.ShowInTaskbar = false;  //任务栏中窗体图标消失
            //this.ni_frmMain.Visible = true;
            //HideTipForm();
        }

        #endregion


        #region 图标闪烁 开启 关闭

        /// <summary>
        /// 开启
        /// </summary>
        private void StartFlicker()
        {
            this.timer1.Enabled = true;
            this.timer1.Start();
        }

        /// <summary>
        /// 关闭
        /// </summary>
        private void CloseFlicker()
        {
            this.timer1.Stop();
            this.timer1.Enabled = false;
            this.ni_frmMain.Icon = Truelore.Fare.Client.Properties.Resources.truelore0;
        }

        private int i = 0;
        private void timer1_Tick(object sender, EventArgs e)
        {
            if (i < 1)
            {
                this.ni_frmMain.Icon = Truelore.Fare.Client.Properties.Resources.truelore0;
                i++;
                return;
            }
            else
            {
                this.ni_frmMain.Icon = Truelore.Fare.Client.Properties.Resources.truelore1;
                i = 0;
            }
        }
        #endregion


        #region 区别 任务栏中点击窗体图标（最小化|恢复）与点击最小化按钮

        private int WM_SYSCOMMAND = 0x112;
        private long SC_MINIMIZE = 0xF020;
        protected override void WndProc(ref Message m)
        {
            if (m.Msg == WM_SYSCOMMAND)
            {
                if (m.WParam.ToInt64() == SC_MINIMIZE && m.LParam.ToString() != "0")    //m.LParam.ToString() != "0" 表示任务栏中点击窗体图标（最小化|恢复）
                {
                    HideMainForm(); //这里直接将窗体图盘化//this.isMinBoxHited = true;    //点击的是最小化按钮 通过中间变量不可行
                    return;
                }
            }
            base.WndProc(ref m);
        }

        #endregion

        #endregion