非活动窗体的退出

应用程序一段时间不进行操作自动退出[C#] 

 

没有时间去详细说明了，纯贴代码

public partial class MainFrm : Form, IMessageFilter
    {

public MainFrm()
        {
            InitializeComponent();
            Application.Idle+=new EventHandler(Application_Idle);
        }

private void MainFrm_Load(object sender, EventArgs e)
        {
            Application.AddMessageFilter(this);

}

private void MainFrm_FormClosing(object sender, FormClosedEventArgs e)
        {
            Application.RemoveMessageFilter(this);

}

private void Application_Idle(object sender, EventArgs e)
        {
            if (m_WaitMinute == 0)
            {
                myTimer.Start();
            }
            else
            {
                if (m_WaitMinute >= 6)
                    this.Close();
            }
        }

public bool PreFilterMessage(ref Message m)
        {
            if(m_WaitMinute!=0)
            {
                m_WaitMinute = 0;
                this.myTimer.Enabled = false;
                return true;
            }
            //switch(m.Msg)
            //{
            //    case 513:
            //        MessageBox.Show("鼠标左键不可用");
            //        return true;
            //    case 513:
            //        MessageBox.Show("鼠标右键不可用");
            //        return true;
            //}

            return false;
        }

private int m_WaitMinute = 0;
        private void myTimer_Tick(object sender, EventArgs e)
        {
            if (m_WaitMinute < 60)
            {
                myTimer.Enabled = true;
                myTimer.Interval = 10000; //10秒
                m_WaitMinute += 1;
                this.Opacity = 1.0 - Convert.ToDouble(m_WaitMinute / 60.0);
                //MessageBox.Show(this.Opacity.ToString(),m_WaitMinute.ToString());
            }
            else
            {
                myTimer.Enabled = false;
                //MessageBox.Show("时间到");
            }
        }

测试代码的时候不要有消息框弹出，不要修改控件的值或者状态，这些都会造成事件的再次触发。郭振方。Application.Idle + timer 或者 Application.AddMessageFilter + timer 二者使用其一就可以了，放在这里以备参考

原文链接：http://gguozhengfang.blog.163.com/blog/static/1444176020081050163871/