source/ch/cyberduck/core/Shell32.cs

   1 //
   2 // Copyright (c) 2010-2014 Yves Langisch. All rights reserved.
   3 // http://cyberduck.ch/
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 // GNU General Public License for more details.
  14 //
  15 // Bug fixes, suggestions and comments should be sent to:
  16 // yves@cyberduck.ch
  17 //
  18
  19 using System;
  20 using System.Runtime.InteropServices;
  21
  22 namespace Ch.Cyberduck.Core
  23 {
  24     /// <summary>
  25     /// Wraps necessary Shell32.dll structures and functions required to retrieve Icon Handles using SHGetFileInfo. Code
  26     /// courtesy of MSDN Cold Rooster Consulting case study.
  27     /// </summary>
  28     ///
  29     // This code has been left largely untouched from that in the CRC example. The main changes have been moving
  30     // the icon reading code over to the IconReader type.
  31     public class Shell32
  32     {
  33         public const uint BIF_BROWSEFORCOMPUTER = 0x1000;
  34         public const uint BIF_BROWSEFORPRINTER = 0x2000;
  35         public const uint BIF_BROWSEINCLUDEFILES = 0x4000;
  36         public const uint BIF_BROWSEINCLUDEURLS = 0x0080;
  37         public const uint BIF_DONTGOBELOWDOMAIN = 0x0002;
  38         public const uint BIF_EDITBOX = 0x0010;
  39         public const uint BIF_NEWDIALOGSTYLE = 0x0040;
  40         public const uint BIF_RETURNFSANCESTORS = 0x0008;
  41         public const uint BIF_RETURNONLYFSDIRS = 0x0001;
  42         public const uint BIF_SHAREABLE = 0x8000;
  43         public const uint BIF_STATUSTEXT = 0x0004;
  44         public const uint BIF_USENEWUI = (BIF_NEWDIALOGSTYLE | BIF_EDITBOX);
  45         public const uint BIF_VALIDATE = 0x0020;
  46         public const uint FILE_ATTRIBUTE_DIRECTORY = 0x00000010;
  47         public const uint FILE_ATTRIBUTE_NORMAL = 0x00000080;
  48         public const int MAX_PATH = 256;
  49         public const uint SHGFI_ADDOVERLAYS = 0x000000020; // apply the appropriate overlays
  50
  51         public const uint SHGFI_ATTRIBUTES = 0x000000800; // get attributes
  52         public const uint SHGFI_ATTR_SPECIFIED = 0x000020000; // get only specified attributes
  53         public const uint SHGFI_DISPLAYNAME = 0x000000200; // get display name
  54         public const uint SHGFI_EXETYPE = 0x000002000; // return exe type
  55         public const uint SHGFI_ICON = 0x000000100; // get icon
  56         public const uint SHGFI_ICONLOCATION = 0x000001000; // get icon location
  57         public const uint SHGFI_LARGEICON = 0x000000000; // get large icon
  58         public const uint SHGFI_LINKOVERLAY = 0x000008000; // put a link overlay on icon
  59         public const uint SHGFI_OPENICON = 0x000000002; // get open icon
  60         public const uint SHGFI_OVERLAYINDEX = 0x000000040; // Get the index of the overlay
  61         public const uint SHGFI_PIDL = 0x000000008; // pszPath is a pidl
  62         public const uint SHGFI_SELECTED = 0x000010000; // show icon in selected state
  63         public const uint SHGFI_SHELLICONSIZE = 0x000000004; // get shell size icon
  64         public const uint SHGFI_SMALLICON = 0x000000001; // get small icon
  65         public const uint SHGFI_SYSICONINDEX = 0x000004000; // get system icon index
  66         public const uint SHGFI_TYPENAME = 0x000000400; // get type name
  67         public const uint SHGFI_USEFILEATTRIBUTES = 0x000000010; // use passed dwFileAttribute
  68
  69         [DllImport("shell32.dll", CharSet = CharSet.Auto)]
  70         public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi,
  71                                                   uint cbFileInfo, uint uFlags);
  72
  73         [StructLayout(LayoutKind.Sequential)]
  74         public struct BROWSEINFO
  75         {
  76             public IntPtr hwndOwner;
  77             public IntPtr pidlRoot;
  78             public IntPtr pszDisplayName;
  79             [MarshalAs(UnmanagedType.LPTStr)] public string lpszTitle;
  80             public uint ulFlags;
  81             public IntPtr lpfn;
  82             public int lParam;
  83             public IntPtr iImage;
  84         }
  85
  86         [StructLayout(LayoutKind.Sequential)]
  87         public struct ITEMIDLIST
  88         {
  89             public SHITEMID mkid;
  90         }
  91
  92         [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
  93         public struct SHFILEINFO
  94         {
  95             public IntPtr hIcon;
  96             public int iIcon;
  97             public uint dwAttributes;
  98             [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)] public string szDisplayName;
  99             [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)] public string szTypeName;
 100         };
 101
 102         [StructLayout(LayoutKind.Sequential)]
 103         public struct SHITEMID
 104         {
 105             public ushort cb;
 106             [MarshalAs(UnmanagedType.LPArray)] public byte[] abID;
 107         }
 108     }
 109
 110     /// <summary>
 111     /// Wraps necessary functions imported from User32.dll. Code courtesy of MSDN Cold Rooster Consulting example.
 112     /// </summary>
 113     public class User32
 114     {
 115         /// <summary>
 116         /// Provides access to function required to delete handle. This method is used internally
 117         /// and is not required to be called separately.
 118         /// </summary>
 119         /// <param name="hIcon">Pointer to icon handle.</param>
 120         /// <returns>N/A</returns>
 121         [DllImport("User32.dll")]
 122         public static extern int DestroyIcon(IntPtr hIcon);
 123     }
 124 }