WPF窗口长时间无人操作鼠标自动隐藏

在软件开发中有时会有等待一段时间无人操作后隐藏鼠标，可能原因大致如下：

1.为了安全性，特别是那些需要用到用户名和密码登录服务端的程序，常常考虑长期无人操作，程序自动跳转到用户登录界面；

2.软件为了更好的播放效果，需要隐藏鼠标。

这里写的是第二种情况，wpf做播放时，需要隐藏鼠标。

思路是：假如3s鼠标不动则隐藏，设计了计时器的间隔时间为1s，并添加鼠标没移动的计数器，计数器达到3才执行程序。实现是这样的：每隔1s检测鼠标是否移动，如果不移动则计数器加1，如果中途鼠标移动，则计数器清零，要达到计数器计数为3，则要3次鼠标检测中鼠标都不移动，这样从鼠标停止移动，到计数器达到3，刚好是3s，能够达到3s鼠标不动则隐藏程序执行；

一、封装好的监视鼠标移动的类文件：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Runtime.InteropServices;



namespace EBS.Common {

    public class MouseMonitorHelper {

        private static Point mousePosition;    //鼠标的位置

        public static int CheckCount;   //检测鼠标位置的次数



        //判断鼠标是否移动        

        public static bool HaveUsedTo() {

            Point point = GetMousePoint();

            if (point == mousePosition) return false;

            mousePosition = point; return true;

        }



        [StructLayout(LayoutKind.Sequential)]

        private struct MPoint {

            public int X;

            public int Y;

            public MPoint(int x, int y) {

                this.X = x;

                this.Y = y;

            }

        }



        [DllImport("user32.dll", CharSet = CharSet.Auto)]

        private static extern bool GetCursorPos(out MPoint mpt);



        // 获取当前屏幕鼠标位置           

        public static Point GetMousePoint() {

            MPoint mpt = new MPoint();

            GetCursorPos(out mpt);

            Point p = new Point(mpt.X, mpt.Y);

            return p;

        }

    }

}

View Code

 

二、程序中调用Timer事件：

private DispatcherTimer Timer_MouseMove;



private void Window_Loaded(object sender, RoutedEventArgs e) {

            // 设置鼠标隐藏、显示

            this.Timer_MouseMove = new DispatcherTimer();

            this.Timer_MouseMove.Tick +=new EventHandler(Timer_MouseMove_Tick);

            this.Timer_MouseMove.Interval = new TimeSpan(0, 0, 1);

            this.Timer_MouseMove.Start();

        }





private void Timer_MouseMove_Tick(object sender, EventArgs e) {

            try {

                if (!MouseMonitorHelper.HaveUsedTo()) {

                    MouseMonitorHelper.CheckCount++;

                    if (MouseMonitorHelper.CheckCount == 3) {

                        MouseMonitorHelper.CheckCount = 0;

                        // 关闭按钮隐藏、鼠标隐藏

                        this.cnsExist.Visibility = Visibility.Hidden;

                        Mouse.OverrideCursor = Cursors.None;

                    }

                } else MouseMonitorHelper.CheckCount = 0;

            } catch {

                throw new NotImplementedException();

            }

        }





private void DockPanel_MouseMove(object sender, MouseEventArgs e) {

            this.cnsExist.Visibility = Visibility.Visible;

            Mouse.OverrideCursor = Cursors.Arrow;

View Code

另外如果有设计到鼠标焦点的情况，请参考WPF程序长时间无人操作