//?Image?Color?Picker
//?by?mostone@hotmail.com
//?http://blog.csdn.net/mostone
//?2013-10-06

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?mostone
{
????public?partial?class?FormMain?:?Form
????{

????????Bitmap?bmpZoom?=?null;
????????Bitmap?bmpSrc?=?null;

????????public?FormMain（）
????????{
????????????InitializeComponent（）;
????????}

????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????try
????????????{
????????????????DialogResult?isDone?=?openFileDialog1.ShowDialog（）;
????????????????if?（isDone?==?DialogResult.OK）
????????????????{
????????????????????pictureBox1.Image?=?null;
????????????????????pictureBox2.Image?=?null;
????????????????????bmpSrc?=?null;
????????????????????bmpZoom?=?null;

????????????????????Image?img?=?Bitmap.FromFile（openFileDialog1.FileName）;
????????????????????pictureBox1.Image?=?img;
????????????????????bmpSrc?=?new?Bitmap（img）;
????????????????}
????????????}
????????????catch?（Exception?ex）
????????????{
????????????????pictureBox1.Image?=?null;
????????????????bmpSrc?=?null;
????????????????MessageBox.Show（ex.Message）;
????????????}

????????}

????????private?void?pictureBox1_MouseClick（object?sender?MouseEventArgs?e）
????????{
????????????const?int?zoomSize?=?8;
????????????if?（this.bmpSrc?==?null）
????????????{
????????????????return;
????????????}

????????????bmpZoom?=?null;
????????????bmpZoom?=?new?Bitmap（pictureBox2.Width?pictureBox2.Height）;
????????????Graphics?grpDst?=?Graphics.FromImage（bmpZoom）;

????????????//?zoom?to?8x
????????????int?width?=?pictureBox2.Width?/?zoomSize;
????????????int?height?=?pictureBox2.Height?/?zoomSize;

????????????int?offsetX?=?width?/?2;
????????????int?offsetY?=?height?/?2;

????????????int?x?=?e.X?-?offsetX;
????????????int?y?=?e.Y?-?offsetY;
????????????if?（offsetX?+?e.X?>=?bmpSrc.Width）
????????????{
????????????????x?=?bmpSrc.Width?-?offsetX?*?2;
????????????}
????????????else?if?（x?????????????{
????????????????x?=?0;
????????????}

????????????if?（offsetY?+?e.Y?>=?bmpSrc.Height）
????????????{
????????????????y?=?bmpSrc.Height?-?offsetY?*?2;
????????????}
????????????else?if?（y?????????????{?
????????????????y?=?0;
????????????}

????????????Color?color;
????????????int?oriX?=?x;
????????????for?（int?row?=?0;?row?????????????{
????????????????if?（y?>=?bmpSrc.Height）?break;

????????????????for?（int?col?=?0;?col?????????????????{
????????????????????if?（x?>=?bmpSrc.Width）?break;

????????????????????//?get?pixel?color
????????????????????color?=?bmpSrc.GetPixel（x?y）;
????????????????????//?draw?zoom?block
????????????????????grpDst.FillRectangle（new?SolidBrush（color）?col?row?zoomSize?zoom