在IE右键菜单，添加图片保存快捷方式

 先用C#做一个COM

作用为下载图片和图片改名（使用GUID）

 

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Net;using System.IO;using System.Reflection;using System.Runtime.InteropServices;using System.Threading;[assembly: AssemblyKeyFile("gachal_d_key.snk")]namespace PicsDown{ [Guid("694C1820-04B6-4988-928F-FD858B95C880")] public interface DownLoad_Interface { [DispId(1)] void Down(string url, string dir); [DispId(2)] void SavePhotoFromUrl(string FileName, string Url); [DispId(3)] bool SaveBinaryFile(WebResponse response, string FileName); } // 事件接口Database_COMObjectEvents [Guid("47C976E0-C208-4740-AC42-41212D3C34F0"), InterfaceType(ComInterfaceType.InterfaceIsIDispatch)] public interface DownLoad_Events { } delegate void MyDelegate(string FileName, string Url); [Guid("9E5E5FB2-219D-4ee7-AB27-E4DBED8E123E"), ClassInterface(ClassInterfaceType.None), ComSourceInterfaces(typeof(DownLoad_Events))] public class DownLoad : DownLoad_Interface { public void Down(string url,string dir) { string FileName; string Url; string tempUrl = url.Substring(url.Length - 5, 5); tempUrl = tempUrl.Substring(tempUrl.IndexOf(".", 0), 4); if (tempUrl == ".jpe") { tempUrl = ".jpeg"; } FileName = @dir + Guid.NewGuid().ToString() + tempUrl; Url = url; MyDelegate del = new MyDelegate(this.SavePhotoFromUrl); IAsyncResult ar = del.BeginInvoke(FileName, Url, null, null); //del.EndInvoke(ar); } /// <summary> /// 从图片地址下载图片到本地磁盘 /// </summary> /// <param name="ToLocalPath">图片本地磁盘地址</param> /// <param name="Url">图片网址</param> /// <returns></returns> public void SavePhotoFromUrl(string FileName, string Url) { bool Value = false; WebResponse response = null; Stream stream = null; try { HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url); response = request.GetResponse(); stream = response.GetResponseStream(); if (!response.ContentType.ToLower().StartsWith("text/")) { Value = SaveBinaryFile(response, FileName); } } catch (Exception err) { string aa = err.ToString(); } } /// <summary> /// Save a binary file to disk. /// </summary> /// <param name="response">The response used to save the file</param> // 将二进制文件保存到磁盘 public bool SaveBinaryFile(WebResponse response, string FileName) { bool Value = true; byte[] buffer = new byte[1024]; try { if (File.Exists(FileName)) File.Delete(FileName); Stream outStream = System.IO.File.Create(FileName); Stream inStream = response.GetResponseStream(); int l; do { l = inStream.Read(buffer, 0, buffer.Length); if (l > 0) outStream.Write(buffer, 0, l); } while (l > 0); outStream.Close(); inStream.Close(); } catch { Value = false; } return Value; } }}

 

在这之前先建立snk文件，sn   -k   gachal_d_key.snk，在文件放在项目中

 

注意在VS中，项目->属性->应用程序->信息集信息 中 把程序集COM可见 选择

                   项目->属性->生成 为COM互操作注册 选择

 

这里使用了多线程运行SavePhotoFromUrl函数，保证保存图片时不会“卡卡”的

 

然后在注册表HKEY_CURRENT_USER/Software/Microsoft/Internet Explorer/MenuExt

上添加新项，命名为保存图片(&x)，注意X将被设为快捷键

在该项添加一个字符值，名字默认，值为c:/download.htm

再添加一个DWORD值，名字为contexts，值为十六进制的2

 

在c盘新建名为download.htm的文件，内容如下

<mce:script language="javascript"><!-- var objNetSamp=new ActiveXObject("PicsDown.DownLoad");//创建COM DLL对象 var srcEvent = external.menuArguments.event; var EventElement; if(typeof(srcEvent.clientX) == "undefined") { EventElement = external.menuArguments.document.elementFromPoint ( srcEvent.pointerX, srcEvent.pointerY ); } else { EventElement = external.menuArguments.document.elementFromPoint ( srcEvent.clientX, srcEvent.clientY ); } if(EventElement != null && EventElement.tagName == "IMG") { objNetSamp.Down(EventElement.src,"C://pics//"); }// --></mce:script>

 

OK，以后在IE保存图片就直接右键然后按X就会保存到c:/pic中，要改为其他目录只要修改download.htm的文件即可。