实例介绍
【实例简介】获取系统文件icon图标 获取文件基本信息等等
【实例截图】
【核心代码】
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; using System.Drawing; namespace Core.IO { /// <summary> /// 获取系统文件类信息 /// </summary> public class ShellIcon { [StructLayout(LayoutKind.Sequential)] public struct SHFILEINFO { public IntPtr hIcon; public IntPtr iIcon; public uint dwAttributes; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)] public string szDisplayName; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)] public string szTypeName; }; class Win32 { public const uint SHGFI_ICON = 0x000000100; // get icon public const uint SHGFI_DISPLAYNAME = 0x000000200; // get display name public const uint SHGFI_TYPENAME = 0x000000400; // get type name public const uint SHGFI_ATTRIBUTES = 0x000000800; // get attributes public const uint SHGFI_ICONLOCATION = 0x000001000; // get icon location public const uint SHGFI_EXETYPE = 0x000002000; // return exe type public const uint SHGFI_SYSICONINDEX = 0x000004000; // get system icon index public const uint SHGFI_LINKOVERLAY = 0x000008000; // put a link overlay on icon public const uint SHGFI_SELECTED = 0x000010000; // show icon in selected state public const uint SHGFI_ATTR_SPECIFIED = 0x000020000; // get only specified attributes public const uint SHGFI_LARGEICON = 0x000000000; // get large icon public const uint SHGFI_SMALLICON = 0x000000001; // get small icon public const uint SHGFI_OPENICON = 0x000000002; // get open icon public const uint SHGFI_SHELLICONSIZE = 0x000000004; // get shell size icon public const uint SHGFI_PIDL = 0x000000008; // pszPath is a pidl public const uint SHGFI_USEFILEATTRIBUTES = 0x000000010; // use passed dwFileAttribute public const uint FILE_ATTRIBUTE_READONLY = 0x00000001; public const uint FILE_ATTRIBUTE_HIDDEN = 0x00000002; public const uint FILE_ATTRIBUTE_SYSTEM = 0x00000004; public const uint FILE_ATTRIBUTE_DIRECTORY = 0x00000010; public const uint FILE_ATTRIBUTE_ARCHIVE = 0x00000020; public const uint FILE_ATTRIBUTE_DEVICE = 0x00000040; public const uint FILE_ATTRIBUTE_NORMAL = 0x00000080; public const uint FILE_ATTRIBUTE_TEMPORARY = 0x00000100; public const uint FILE_ATTRIBUTE_SPARSE_FILE = 0x00000200; public const uint FILE_ATTRIBUTE_REPARSE_POINT = 0x00000400; public const uint FILE_ATTRIBUTE_COMPRESSED = 0x00000800; public const uint FILE_ATTRIBUTE_OFFLINE = 0x00001000; public const uint FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 0x00002000; public const uint FILE_ATTRIBUTE_ENCRYPTED = 0x00004000; [DllImport( "shell32.dll" )] public static extern IntPtr SHGetFileInfo( string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbSizeFileInfo, uint uFlags); [DllImport( "User32.dll" )] public static extern int DestroyIcon(System.IntPtr hIcon); } public ShellIcon() { } /// <summary> /// 获取扩展名信息 /// </summary> /// <param name="ext"></param> /// <returns></returns> public static string GetTypeInfo( string ext) { SHFILEINFO shinfo = new SHFILEINFO(); Win32.SHGetFileInfo(ext, Win32.FILE_ATTRIBUTE_NORMAL, ref shinfo, ( uint )Marshal.SizeOf(shinfo), Win32.SHGFI_TYPENAME | Win32.SHGFI_USEFILEATTRIBUTES); return shinfo.szTypeName; } /// <summary> /// 获取扩展名的图标 /// </summary> /// <param name="ext"></param> /// <returns></returns> public static Icon GetSmallTypeIcon( string ext) { SHFILEINFO shinfo = new SHFILEINFO(); Win32.SHGetFileInfo(ext, Win32.FILE_ATTRIBUTE_NORMAL, ref shinfo, ( uint )Marshal.SizeOf(shinfo), Win32.SHGFI_ICON | Win32.SHGFI_SMALLICON | Win32.SHGFI_USEFILEATTRIBUTES); if (shinfo.hIcon.ToInt32() == 0) return null ; Icon shellIcon = (Icon)System.Drawing.Icon.FromHandle(shinfo.hIcon).Clone(); Win32.DestroyIcon(shinfo.hIcon); return shellIcon; } /// <summary> /// 获取文件的小图标 /// </summary> /// <param name="fileName"></param> /// <returns></returns> public static Icon GetSmallIcon( string fileName) { SHFILEINFO shinfo = new SHFILEINFO(); Win32.SHGetFileInfo(fileName, 0, ref shinfo, ( uint )Marshal.SizeOf(shinfo), Win32.SHGFI_ICON | Win32.SHGFI_SMALLICON); if (shinfo.hIcon.ToInt32() == 0) return null ; Icon shellIcon = (Icon)System.Drawing.Icon.FromHandle(shinfo.hIcon).Clone(); Win32.DestroyIcon(shinfo.hIcon); return shellIcon; } /// <summary> /// 获取文件的大图标 /// </summary> /// <param name="fileName"></param> /// <returns></returns> public static Icon GetLargeIcon( string fileName) { SHFILEINFO shinfo = new SHFILEINFO(); Win32.SHGetFileInfo(fileName, 0, ref shinfo, ( uint )Marshal.SizeOf(shinfo), Win32.SHGFI_ICON | Win32.SHGFI_LARGEICON); if (shinfo.hIcon.ToInt32() == 0) return null ; Icon shellIcon = (Icon)System.Drawing.Icon.FromHandle(shinfo.hIcon).Clone(); Win32.DestroyIcon(shinfo.hIcon); return shellIcon; } } } |
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