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   源码介绍

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

namespace ImageRectInfo
{
    public partial class Form1 : Form
    {//- -!、、尼玛 我感觉所谓的热区 在我这里其实就是再做一份图像出来
        public Form1() {
            InitializeComponent();
            this.pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
            this.pictureBox1.BorderStyle = BorderStyle.Fixed3D;
            this.pictureBox1.Location = new Point(0, 0);
        }
        Bitmap srcImg;      //原始图片
        Bitmap infoImg;     //参考图片
        Label lbInfo;       //显示信息
        private void Form1_Load(object sender, EventArgs e) {
            srcImg = new Bitmap("srcImage.jpg");        //加载图像
            infoImg = new Bitmap("infoImage.bmp");
            pictureBox1.Image = srcImg;                 //显示原图 - -！、尼玛感觉srcImage创建出来是多余的
            this.Width = pictureBox1.Width   (this.Bounds.Width - this.ClientSize.Width);
            this.Height = pictureBox1.Height   (this.Bounds.Height - this.ClientSize.Height);
            //设置label
            lbInfo = new Label();
            this.Controls.Add(lbInfo);
            lbInfo.Parent = pictureBox1;
            lbInfo.BackColor = Color.FromArgb(150, 0, 0, 0);
            lbInfo.ForeColor = Color.White;
            lbInfo.TextAlign = ContentAlignment.MiddleCenter;
        }

        private void pictureBox1_MouseMove(object sender, MouseEventArgs e) {
            Color clr = infoImg.GetPixel(e.X, e.Y);         //获取在参考图对应坐标像素点的颜色信息
            if (clr.ToArgb() != Color.Black.ToArgb()) {
                pictureBox1.Cursor = Cursors.Hand;          //设置手形
                if (clr.ToArgb() == Color.FromArgb(255, 0xFF, 0, 0).ToArgb())
                    lbInfo.Text = "眼睛";                   //对颜色进行判断
                else if (clr.ToArgb() == Color.FromArgb(255, 0, 0xFF, 0).ToArgb())
                    lbInfo.Text = "电脑";
                else if (clr.ToArgb() == Color.FromArgb(255, 0, 0, 0xFF).ToArgb())
                    lbInfo.Text = "鼠标";
                else if (clr.ToArgb() == Color.FromArgb(255, 0xFF, 0xFF, 0).ToArgb())
                    lbInfo.Text = "手机";
                else if (clr.ToArgb() == Color.FromArgb(255, 0xFF, 0, 0xFF).ToArgb())
                    lbInfo.Text = "咖啡杯";
                else if (clr.ToArgb() == Color.FromArgb(255, 0, 0xFF, 0xFF).ToArgb())
                    lbInfo.Text = "徽章";
                else if (clr.ToArgb() == Color.FromArgb(255, 0x55, 0, 0).ToArgb())
                    lbInfo.Text = "钢笔";
                else if (clr.ToArgb() == Color.FromArgb(255, 0, 0x55, 0).ToArgb())
                    lbInfo.Text = "书";
                else if (clr.ToArgb() == Color.FromArgb(255, 0, 0, 0x55).ToArgb())
                    lbInfo.Text = "耳机";
                else if (clr.ToArgb() == Color.FromArgb(255, 0x55, 0x55, 0).ToArgb())
                    lbInfo.Text = "手表";
                else if (clr.ToArgb() == Color.FromArgb(255, 0x55, 0, 0x55).ToArgb())
                    lbInfo.Text = "扑克牌";
            } else {
                pictureBox1.Cursor = Cursors.Arrow;
                lbInfo.Text = "没有发现东西";
            }
            //设置label位置
            if (e.X   20   lbInfo.Width >= pictureBox1.Width)
                lbInfo.Left = e.X - 20 - lbInfo.Width;
            else
                lbInfo.Left = e.X   20;
            if (e.Y   20   lbInfo.Height >= pictureBox1.Height)
                lbInfo.Top = e.Y - 20 - lbInfo.Height;
            else
                lbInfo.Top = e.Y   20;
        }
    }
}