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;
}
}
}
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(, , );
this.Timer_MouseMove.Start();
} private void Timer_MouseMove_Tick(object sender, EventArgs e) {
try {
if (!MouseMonitorHelper.HaveUsedTo()) {
MouseMonitorHelper.CheckCount++;
if (MouseMonitorHelper.CheckCount == ) {
MouseMonitorHelper.CheckCount = ;
// 关闭按钮隐藏、鼠标隐藏
this.cnsExist.Visibility = Visibility.Hidden;
Mouse.OverrideCursor = Cursors.None;
}
} else MouseMonitorHelper.CheckCount = ;
} catch {
throw new NotImplementedException();
}
} private void DockPanel_MouseMove(object sender, MouseEventArgs e) {
this.cnsExist.Visibility = Visibility.Visible;
Mouse.OverrideCursor = Cursors.Arrow;
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