关于winapi:如何获取“特殊” Windows文件夹(回收站等)的本地化名称?

关于winapi:如何获取“特殊” Windows文件夹(回收站等)的本地化名称?

How can I get the localized name of a 'special' windows folder (Recycle bin etc.)?

我正在尝试找出"正确的" Windows API,以查找"特殊"文件夹的本地化名称,特别是回收站。 我希望能够通过一个适当本地化的对话框提示用户,询问他们是否要将文件发送到回收站或直接将其删除。

我已经在互联网上(和Stackoverflow上)找到了很多有关如何进行实际删除的方法,而且看起来很简单,我真的很想能够对文本进行本地化。


阅读本文以获得代码示例和用法:

http://www.codeproject.com/KB/winsdk/SpecialFolders.aspx

在MSDN上也有一篇文章,可帮助您通过API调用识别特殊文件夹的位置


我实际上并没有发现CodeProject文章非常有用,所以我想用我用来检索回收站本地化名称的实际代码回答这个问题。

此示例还尝试在释放资源方面表现正确。 欢迎任何评论,特别是如果您发现我的资源管理有误!

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public static string GetLocalizedRecycleBinName()
{
   IntPtr relative_pidl, parent_ptr, absolute_pidl;

   PInvoke.SHGetFolderLocation(IntPtr.Zero, PInvoke.CSIDL.BitBucket,
         IntPtr.Zero, 0, out absolute_pidl);
   try
   {
      PInvoke.SHBindToParent(absolute_pidl,
            ref PInvoke.Guids.IID_IShellFolder,
            out parent_ptr, out relative_pidl);
      PInvoke.IShellFolder shell_folder =
            Marshal.GetObjectForIUnknown(parent_ptr)
            as PInvoke.IShellFolder;
      // Release() for this object is called at finalization
      if (shell_folder == null)
         return Strings.RecycleBin;

      PInvoke.STRRET strret = new PInvoke.STRRET();
      StringBuilder sb = new StringBuilder(260);
      shell_folder.GetDisplayNameOf(relative_pidl, PInvoke.SHGNO.Normal,
            out strret);
      PInvoke.StrRetToBuf(ref strret, relative_pidl, sb, 260);
      string name = sb.ToString();

      return String.IsNullOrEmpty(name) ? Strings.RecycleBin : name;
   }
   finally { PInvoke.ILFree(absolute_pidl); }
}

static class PInvoke
{
   [DllImport("shell32.dll")]
   public static extern int SHGetFolderLocation(IntPtr hwndOwner,
         CSIDL nFolder, IntPtr hToken, uint dwReserved, out IntPtr ppidl);

   [DllImport("shell32.dll")]
   public static extern int SHBindToParent(IntPtr lpifq, [In] ref Guid riid,
         out IntPtr ppv, out IntPtr pidlLast);

   [DllImport("shlwapi.dll")]
   public static extern Int32 StrRetToBuf(ref STRRET pstr, IntPtr pidl,
         StringBuilder pszBuf, uint cchBuf);

   [DllImport("shell32.dll")]
   public static extern void ILFree([In] IntPtr pidl);

   [ComImport]
   [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
   [Guid("000214E6-0000-0000-C000-000000000046")]
   public interface IShellFolder
   {
      [PreserveSig]
      Int32 CompareIDs(Int32 lParam, IntPtr pidl1, IntPtr pidl2);
      void ParseDisplayName(IntPtr hwnd, IntPtr pbc, String pszDisplayName,
            UInt32 pchEaten, out IntPtr ppidl, UInt32 pdwAttributes);
      void EnumObjects(IntPtr hwnd, int grfFlags,
            out IntPtr ppenumIDList);
      void BindToObject(IntPtr pidl, IntPtr pbc, [In] ref Guid riid,
            out IntPtr ppv);
      void BindToStorage(IntPtr pidl, IntPtr pbc, [In] ref Guid riid,
            out IntPtr ppv);
      void CreateViewObject(IntPtr hwndOwner, [In] ref Guid riid,
            out IntPtr ppv);
      void GetAttributesOf(UInt32 cidl,
            [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 0)]
         IntPtr[] apidl, ref uint rgfInOut);
      void GetUIObjectOf(IntPtr hwndOwner, UInt32 cidl,
            [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
         IntPtr[] apidl, [In] ref Guid riid, UInt32 rgfReserved,
         out IntPtr ppv);
      void GetDisplayNameOf(IntPtr pidl, SHGNO uFlags, out STRRET pName);
      void SetNameOf(IntPtr hwnd, IntPtr pidl, string pszName,
            int uFlags, out IntPtr ppidlOut);
   }

   public enum CSIDL
   {
      BitBucket = 0x000a,
   }

   public enum SHGNO
   {
      Normal = 0x0000, ForParsing = 0x8000,
   }

   [StructLayout(LayoutKind.Explicit, Size = 520)]
   public struct STRRETinternal
   {
      [FieldOffset(0)] public IntPtr pOleStr;
      [FieldOffset(0)] public IntPtr pStr;
      [FieldOffset(0)] public uint uOffset;
   }

   [StructLayout(LayoutKind.Sequential)]
   public struct STRRET
   {
      public uint uType;
      public STRRETinternal data;
   }

   public class Guids
   {
      public static Guid IID_IShellFolder =
            new Guid("{000214E6-0000-0000-C000-000000000046}");
   }
}

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