C#實現右下角表徵圖(系統托盤)功能

表單中拖入　notifyIcon 組件

notifyIcon 中的 ICON 屬性 顯示的表徵圖

下面是系統托盤的準系統代碼（單擊最小化表單隱藏,雙擊表徵圖顯示）及表單關閉時退出確認代碼。

　   //單擊最小化表單隱藏

　　private void frmMain_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Normal)
            {
                notifyIcon1.Visible = true; //托盤表徵圖隱藏
            }
            if (this.WindowState == FormWindowState.Minimized)//最小化事件
            {
                this.Hide();//最小化時表單隱藏
            }
        }

       //雙擊系統托盤的小表徵圖事件

        private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
            {
                this.Show();
                this.WindowState = FormWindowState.Normal; //還原表單
            }
        }

        private void frmMain_FormClosing(object sender, FormClosingEventArgs e) //關閉事件
        {
            DialogResult result;
            result = MessageBox.Show("確定退出嗎？", "退出", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
            if (result == DialogResult.OK)
            {

                Application.ExitThread();
            }
            else
            {
                e.Cancel = true;
            }
        }