C#WinForm - 最小化或关闭时隐藏到系统托盘

C#WinForm - 最小化或关闭时隐藏到系统托盘

 

STEP1、添加托盘图标控件NotifyIcon(直接从工具箱中拖动添加即可)

STEP2、添加(重写)窗口尺寸变动函数Form1_Resize

        private void Form1_Resize(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)    //最小化到系统托盘
            {
                NotifyIcon1.Visible = true;    //显示托盘图标
                this.Hide();    //隐藏窗口
            }
        }

STEP3、添加(重写)关闭窗口事件

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            //注意判断关闭事件Reason来源于窗体按钮,否则用菜单退出时无法退出!
            if (e.CloseReason == CloseReason.UserClosing)
            {
                e.Cancel = true;    //取消"关闭窗口"事件
                this.WindowState = FormWindowState.Minimized;    //使关闭时窗口向右下角缩小的效果
                NotifyIcon1.Visible = true;
                this.Hide();
                return;
            }

        }

STEP4、添加双击托盘图标事件(双击显示窗口)

        private void NotifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            NotifyIcon1.Visible = false;
            this.Show();
            WindowState = FormWindowState.Normal;
            this.Focus();
        }

STEP5、添加托盘图标的右键菜单

      (具体代码略)
        "退出"菜单:Application.Exit();
        "显示窗口"菜单:参考STEP4

 

PS: 解决了设置“关闭时隐藏到系统托盘”时,点击“退出”菜单也无法退出的问题。——无论是用this.Close();还是Application.Exit();都无法退出!——解决办法是,在关闭窗口事件中判断关闭原因/来源(e.CloseReason),若为CloseReason.UserClosing则为点击了窗口右上角的关闭按钮,否则可能是点击了"退出"菜单,则不执行隐藏到托盘的程序。(详见STEP3的if判断)

 

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