WPF 定时器DispatcherTimer+GetCursorPos 的使用,动态查看屏幕上任一点坐标

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.IO;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Threading;


namespace AiGame
{
   
    public partial class MainWindow : Window
    {
        public struct POINT
        {
            public int X;
            public int Y;
        }     
        [DllImport("user32.dll", CharSet = CharSet.Auto)]//导入Dll
        public static extern bool GetCursorPos(ref  POINT pt);//定义相对应的函数,需使用ref传入结构,这里是传入结构的引用
        public MainWindow()
        {
            InitializeComponent();
            
            DispatcherTimer dTimer = new System.Windows.Threading.DispatcherTimer();
            dTimer.Tick += new EventHandler(dTimer_Tick);
            dTimer.Interval = new TimeSpan(0, 0, 0, 0, 100);               
            dTimer.Start();
        }
        
        void dTimer_Tick(object sender, EventArgs e)
        {
            POINT p = new POINT();    
            GetCursorPos(ref  p);//这里传入结构实例
            this.Title= p.X.ToString() + "  " + p.Y.ToString();//鼠标的实时坐标在标题上体现出来        
        }

    }
}