用C#在Form里显示横纵坐标、鼠标移动/离开/进来/点击

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace mou
{
    public partial class Form1 : Form
    {
        Graphics FormCGI;

        public Form1()
        {
            InitializeComponent();
            FormCGI = this.CreateGraphics();
        }

        private void button1_MouseEnter(object sender, EventArgs e)
        {
            label1.Text = "鼠标进来了";
        }

        private void button1_MouseLeave(object sender, EventArgs e)
        {
            label1.Text = "鼠标离开了";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            label1.Text = "鼠标点击";

            String x, y;
            MouseEventArgs e1 = (MouseEventArgs)e;
            x = e1.X.ToString();
            y = e1.Y.ToString();

            label2.Text = "X坐标：" + x + " Y坐标" + y;
        }

        private void button1_MouseMove(object sender, MouseEventArgs e)
        {
           label2.Text = "鼠标在移动";
        }
    }
}