WPF - 检测鼠标按下一段时间

使用WPF开发应用程序时，我们经常需要检测鼠标按下一段时间的操作。这种操作可以用于实现长按触发某个功能或者展示一些提示信息。本文将介绍如何在WPF中实现鼠标按下一段时间的检测，并提供一个简单的案例代码。

C#
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Threading;
namespace MousePressDuration
{
    public partial class MainWindow : Window
    {
        private DispatcherTimer timer;
        private bool mousePressed;
        private DateTime mouseDownTime;
        public MainWindow()
        {
            InitializeComponent();
            timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromMilliseconds(100);
            timer.Tick += Timer_Tick;
            mousePressed = false;
            mouseDownTime = DateTime.MinValue;
        }
        private void myButton_MouseDown(object sender, MouseButtonEventArgs e)
        {
            mousePressed = true;
            mouseDownTime = DateTime.Now;
            timer.Start();
        }
        private void myButton_MouseUp(object sender, MouseButtonEventArgs e)
        {
            mousePressed = false;
            timer.Stop();
        }
        private void Timer_Tick(object sender, EventArgs e)
        {
            if (mousePressed)
            {
                TimeSpan duration = DateTime.Now - mouseDownTime;
                if (duration.TotalSeconds >= 1)
                {
                    MessageBox.Show("鼠标按下超过1秒钟！");
                }
            }
        }
    }
}