30.winform之按钮的MouseEnter

效果

实现

代码

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

namespace Do_you_love_me {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

        /// <summary>
        /// 当鼠标进入按钮的可见部分时，给按钮一个新的坐标
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button2_MouseEnter(object sender, EventArgs e) {
            //给按钮一个新的坐标
            //这个按钮活动的最大宽度就是 窗体的宽度减去按钮的宽度
            //ClientSize获取或设置窗体工作区的大小
            int x = this.ClientSize.Width - btnUnLove.Width;
            int y = this.ClientSize.Height - btnUnLove.Height;

            Random r = new Random();
            //要给按钮一个随机坐标
            btnUnLove.Location = new Point(r.Next(0, x + 1), r.Next(0, y + 1));
        }

        private void button1_Click(object sender, EventArgs e) {
            MessageBox.Show("爱你");
            this.Close();//关闭主窗体
        }


    }
}