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;
using?System.Drawing.Imaging;

namespace?WindowsFormsApplication1
{
????public?partial?class?Form1?:?Form
????{
????????private?Bitmap?m_Image;
????????private?Point?m_StarPoint?=?Point.Empty;
????????private?Point?m_ViewPoint?=?Point.Empty;
????????private?string?Img?=?“../../1.jpg“;
????????private?int?Img_Width?Img_Height;//寬?高
????????private?bool?_isLeftMouseDown?=?false;


????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{
????????????System.Drawing.Image?image?=?System.Drawing.Image.FromFile（@Img）;?
????????????Img_Width?=?image.Width;//寬
????????????Img_Height?=?image.Height;//高

????????????m_Image?=?（Bitmap）Image.FromFile（@Img）;
????????????this.pictureBox1.SizeMode?=?PictureBoxSizeMode.Zoom;
????????????pictureBox1.Image?=?m_Image.Clone（new?RectangleF（0?0?Img_Width?Img_Height）?PixelFormat.Format24bppRgb）;
????????????this.pictureBox1.MouseDown?+=?this.pictureBox1_MouseDown;
????????}

????????public?float?StrToFloat（object?FloatString）//string轉float
????????{
????????????float?result;
????????????if?（FloatString?!=?null）
????????????{
????????????????if?（float.TryParse（FloatString.ToString（）?out?result））
????????????????????return?result;
????????????????else
????????????????{
????????????????????return?（float）0.00;
????????????????}
????????????}
????????????else
????????????{
????????????????return?（float）0.00;
????????????}
????????}


????????private?void?pictureBox1_MouseDown（object?sender?MouseEventArgs?e）
????????{
????????????m_StarPoint?=?e.Location;
????????????decimal?C_pictureBox1Width?=?Math.Round（（decimal）pictureBox1.Width?/?2?0）;?//圖片框X中心點
????????????decimal?C_pictureBox1Height?=?Math.Round（（decimal）pictureBox1.Height?/?2?0）;?//圖片框Y中心點
????????????decimal?C_ImgWidth?=?Math.Round（（decimal）Img_Width?/?2?0）;?//圖片X中心點
????????????decimal?C_ImgHeight?=?Math.Round（（decimal）Img_Height?/?2?0）;?//圖片Y中心點
????????????decimal?C_WidthB?=?Math.Round（（decimal）Img_Width?/?pictureBox1.Width?4）;?//圖片與框X比
????????????decimal?C_HeightB?=?Math.Round（（decimal）Img_Height?/?pictureBox1.Height?4）;?//圖片與框Y比
????????????decimal?C_Width?=?Math.Round（（decimal）C_WidthB?*?m_StarPoint.X?0）;?//圖片鼠標獲取X點
????????????decimal?C_Height?=?Math.Round（（decimal）C_HeightB?*?m_StarPoint.Y?0）;?//圖片鼠標獲取Y點

????????????float?Tmp_Width?=?StrToFloat（（C_Width?-?C_pictureBox1Width）.ToString（））;
????????????float?Tmp_Height?=?StrToFloat（（C_Height?-?C_pictureBox1Height）.ToString（））;

????????????if?（Tmp_Width?????????????else?if?（Tmp_Width?>?（Img_Width?-?pictureBox1.Width））?Tmp_Width?=?Img_Width?-?pictureBox1.Width;
????????????if?（Tmp_Height?????????????else?if?（Tm

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????914??2012-11-22?16:46??圖片放大縮小.sln

????..A..H.?????24064??2012-11-22?20:35??圖片放大縮小.suo

?????文件?????260429??2012-09-13?14:28??WindowsFormsApplication1\1.jpg

?????文件??????12800??2012-11-22?20:34??WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe

?????文件??????28160??2012-11-22?20:34??WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb

?????文件??????11600??2012-11-22?20:35??WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe

?????文件????????490??2010-03-17?22:39??WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.manifest

?????文件???????4958??2012-11-22?20:34??WindowsFormsApplication1\Form1.cs

?????文件???????8558??2012-11-22?19:06??WindowsFormsApplication1\Form1.Designer.cs

?????文件???????5817??2012-11-22?19:06??WindowsFormsApplication1\Form1.resx

?????文件???????6484??2012-11-22?20:34??WindowsFormsApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件????????316??2012-11-22?19:06??WindowsFormsApplication1\obj\x86\Debug\GenerateResource.read.1.tlog

?????文件????????798??2012-11-22?19:06??WindowsFormsApplication1\obj\x86\Debug\GenerateResource.write.1.tlog

?????文件???????1348??2012-11-22?20:35??WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.csproj.FileListAbsolute.txt

?????文件??????12800??2012-11-22?20:34??WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.exe

?????文件????????180??2012-11-22?19:06??WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.Form1.resources

?????文件??????28160??2012-11-22?20:34??WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.pdb

?????文件????????180??2012-11-22?16:46??WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.Properties.Resources.resources

?????文件????????505??2012-11-22?16:46??WindowsFormsApplication1\Program.cs

?????文件???????1380??2012-11-22?16:46??WindowsFormsApplication1\Properties\AssemblyInfo.cs

?????文件???????2896??2012-11-22?16:46??WindowsFormsApplication1\Properties\Resources.Designer.cs

?????文件???????5612??2012-11-22?16:46??WindowsFormsApplication1\Properties\Resources.resx

?????文件???????1107??2012-11-22?16:46??WindowsFormsApplication1\Properties\Settings.Designer.cs

?????文件????????249??2012-11-22?16:46??WindowsFormsApplication1\Properties\Settings.settings

?????文件???????3707??2012-11-22?16:46??WindowsFormsApplication1\WindowsFormsApplication1.csproj

?????目錄??????????0??2012-11-22?16:46??WindowsFormsApplication1\obj\x86\Debug\TempPE

?????目錄??????????0??2012-11-22?20:34??WindowsFormsApplication1\obj\x86\Debug

?????目錄??????????0??2012-11-22?16:46??WindowsFormsApplication1\bin\Debug

?????目錄??????????0??2012-11-22?16:46??WindowsFormsApplication1\obj\x86

?????目錄??????????0??2012-11-22?16:46??WindowsFormsApplication1\bin

............此處省略6個文件信息