Winform学习（七）--长时间不操作则退出登陆

1、定义无操作时间

static int iOperCount = 0;//无操作秒数
static int logoutSecond = 10;//退出倒计时

2、动作后无操作描述归零

 //用于记录用户无操作时间
        internal class MyMessager : IMessageFilter
        {
            public bool PreFilterMessage(ref Message m)
            {
                //如果检测到有鼠标或则键盘的消息，则使计数为0
                if (m.Msg == 0x0202)
                {
                    iOperCount = 0;
                }
                return false;
            }
        }

3、添加定时任务

//定时任务，检查无操作时间
        private void timer1_Tick(object sender, EventArgs e)
        {
            if (!User.currentUser.LoginStatus)//未登录
            {
                return;
            }
            iOperCount++;
            if (iOperCount >= iOperLogout)
            {
                if (iOperCount == iOperLogout)
                {
                    logoutSecond = 10;
                    timer2.Enabled = true;
                }
            }
            else
            {
                timer2.Enabled = false;
                labelTip1.Visible = false;
            }
        }

4、显示倒计时退出提示

private void timer2_Tick(object sender, EventArgs e)
        {
            logoutSecond = logoutSecond - 1;
            string tip1 = "用户长时间未操作，系统将于" + logoutSecond.ToString() + "秒后退出登陆……";
            labelTip1.Text = tip1;
            labelTip1.Visible = true;
            if (logoutSecond == 0)
            {
                logout();
                iOperCount = 0;
            }
        }