#region
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using System;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Runtime.InteropServices;
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using Microsoft.Win32;
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#endregion
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namespace CSFrameworkV5.Common
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{
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/// <summary>
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/// 图标工具
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/// </summary>
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public class IconTool
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{
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/// <summary>
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/// 数组转换为图像
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/// </summary>
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/// <param name="bs"></param>
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/// <returns></returns>
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public static Image ByteToImage(byte[] bs)
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{
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var ms = new MemoryStream(bs);
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var bmp = new Bitmap(ms);
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ms.Close();
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return bmp;
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}
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/// <summary>
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/// 获取文件的ICO图标
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/// </summary>
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/// <param name="fileType">文件类型(*.exe,*.dll)</param>
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/// <param name="large">大图标</param>
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/// <param name="small">返回小图标</param>
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public static void CreateFileIcon(string fileType, out Icon large,
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out Icon small)
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{
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string des;
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if (fileType.Trim() == "") //预设图标
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{
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GetDefaultIcon(out large, out small);
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}
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else if (fileType.ToUpper() == ".EXE") //应用程序图标单独获取
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{
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var l = IntPtr.Zero;
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var s = IntPtr.Zero;
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ExtractIconExW(
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Path.Combine(Environment.SystemDirectory, "shell32.dll"), 2,
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ref l, ref s, 1);
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large = Icon.FromHandle(l);
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small = Icon.FromHandle(s);
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}
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else //其它类型的图标
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{
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GetExtsIconAndDescription(fileType, out large, out small,
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out des);
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}
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if (large == null || small == null) //无法获取图标,预设图标
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GetDefaultIcon(out large, out small);
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}
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/// Return Type: UINT->unsigned int
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/// lpszFile: LPCWSTR->WCHAR*
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/// nIconIndex: int
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/// phiconLarge: HICON*
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/// phiconSmall: HICON*
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/// nIcons: UINT->unsigned int
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[DllImportAttribute("shell32.dll", EntryPoint = "ExtractIconExW",
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CallingConvention = CallingConvention.StdCall)]
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public static extern uint ExtractIconExW(
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[InAttribute] [MarshalAsAttribute(UnmanagedType.LPWStr)]
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string lpszFile, int nIconIndex,
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ref IntPtr phiconLarge, ref IntPtr phiconSmall, uint nIcons);
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/// <summary>
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/// 获取缺省图标
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/// </summary>
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/// <param name="largeIcon"></param>
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/// <param name="smallIcon"></param>
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public static void GetDefaultIcon(out Icon largeIcon,
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out Icon smallIcon)
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{
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largeIcon = smallIcon = null;
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var phiconLarge = new IntPtr();
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var phiconSmall = new IntPtr();
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ExtractIconExW(
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Path.Combine(Environment.SystemDirectory, "shell32.dll"), 0,
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ref phiconLarge,
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ref phiconSmall, 1);
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if (phiconLarge.ToInt32() > 0)
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largeIcon = Icon.FromHandle(phiconLarge);
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if (phiconSmall.ToInt32() > 0)
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smallIcon = Icon.FromHandle(phiconSmall);
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}
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/// <summary>
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/// 通过扩展名得到图标和描述
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/// </summary>
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/// <param name="ext">扩展名</param>
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/// <param name="LargeIcon">得到大图标</param>
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/// <param name="smallIcon">得到小图标</param>
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public static void GetExtsIconAndDescription(string ext,
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out Icon largeIcon, out Icon smallIcon,
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out string description)
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{
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//默认值
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largeIcon = null;
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smallIcon = null;
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description = "";
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if (string.IsNullOrWhiteSpace(ext)) return;
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if (ext.Length > 4) return; //控制文件扩展名长度4位,//防止注册表操纵 .jpg/.pdf
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var extsubkey =
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Registry.ClassesRoot.OpenSubKey(ext); //从注册表中读取扩展名相应的子键
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if (extsubkey != null)
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{
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var extdefaultvalue =
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extsubkey.GetValue(null).ToStringEx(); //取出扩展名对应的文件类型名称
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var typesubkey =
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Registry.ClassesRoot
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.OpenSubKey(extdefaultvalue); //从注册表中读取文件类型名称的相应子键
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if (typesubkey != null)
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{
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description =
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typesubkey.GetValue(null).ToStringEx(); //得到类型描述字符串
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var defaulticonsubkey =
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typesubkey.OpenSubKey("DefaultIcon"); //取默认图标子键
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if (defaulticonsubkey != null)
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{
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//得到图标来源字符串
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var defaulticon = defaulticonsubkey.GetValue(null)
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.ToStringEx(); //取出默认图标来源字符串
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var iconstringArray = defaulticon.Split(',');
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var nIconIndex = 0;
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if (iconstringArray.Length > 1)
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int.TryParse(iconstringArray[1], out nIconIndex);
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//得到图标
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var phiconLarge = new IntPtr();
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var phiconSmall = new IntPtr();
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ExtractIconExW(iconstringArray[0].Trim('"'), nIconIndex,
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ref phiconLarge, ref phiconSmall, 1);
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if (phiconLarge.ToInt32() > 0)
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largeIcon = Icon.FromHandle(phiconLarge);
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if (phiconSmall.ToInt32() > 0)
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smallIcon = Icon.FromHandle(phiconSmall);
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}
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}
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}
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}
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/// <summary>
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/// 图像转换为数组
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/// </summary>
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/// <param name="image"></param>
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/// <returns></returns>
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public static byte[] ImageToByte(Image image)
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{
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var ms = new MemoryStream();
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image.Save(ms, ImageFormat.Bmp);
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var bs = ms.ToArray();
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ms.Close();
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return bs;
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}
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}
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/// <summary>
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/// 图标句柄
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/// </summary>
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[StructLayoutAttribute(LayoutKind.Sequential)]
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public struct HICON__
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{
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public int unused;
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}
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}
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