internal ShellItem(ShellBrowser browser, ShellAPI.CSIDL specialFolder)
        {
            IntPtr pidl = IntPtr.Zero;
            ShellAPI.SHGetSpecialFolderLocation(IntPtr.Zero, specialFolder, out pidl);
            //
            IntPtr shellFolderPtr;
            this.browser = browser;
            //
            if (specialFolder == ShellAPI.CSIDL.DESKTOP)
            {
                ShellAPI.SHGetDesktopFolder(out shellFolderPtr);
                //
                this.shellFolderPtr = shellFolderPtr;
                this.shellFolder = (IShellFolder)Marshal.GetTypedObjectForIUnknown(shellFolderPtr, typeof(IShellFolder));
            }
            else
            {
                this.shellFolder = GetShellFolderFromPidl(pidl, out shellFolderPtr);
                //
                this.parentItem = browser.DesktopItem;
            }
            //
            subFiles = new ShellItemCollection(this);
            subFolders = new ShellItemCollection(this);

            pidlRel = new PIDL(pidl, false);

            ShellAPI.SHFILEINFO info = new ShellAPI.SHFILEINFO();
            ShellAPI.SHGetFileInfo(pidlRel.Ptr, 0, ref info, ShellAPI.cbFileInfo,
                ShellAPI.SHGFI.PIDL | ShellAPI.SHGFI.TYPENAME | ShellAPI.SHGFI.SYSICONINDEX | ShellAPI.SHGFI.DISPLAYNAME);

            type = info.szTypeName;
            text = info.szDisplayName;
            //
            StringBuilder pathBuilder = new StringBuilder(ShellAPI.MAX_PATH);
            ShellAPI.SHGetFolderPath(
                    IntPtr.Zero, specialFolder,
                    IntPtr.Zero, ShellAPI.SHGFP.TYPE_CURRENT, pathBuilder);
            this.path = pathBuilder.ToString();
            //
            if (specialFolder == ShellAPI.CSIDL.DESKTOP)
            {
                ShellImageList.SetIconIndex(this, info.iIcon, false);
                ShellImageList.SetIconIndex(this, info.iIcon, true);
                //
                SetAttributesDesktop(this);
            }
            else
            {
                SetAttributesFolder(this);
                SetInfo(this);
            }
            sortFlag = 1;
        }
 public static extern bool GetMenuItemInfo(
     IntPtr hMenu,
     uint uItem,
     bool fByPos,
     ref ShellAPI.MENUITEMINFO lpmii);
 public static DateTime FileTimeToDateTime(ShellAPI.FILETIME fileTime)
 {
     long ticks = (((long)fileTime.dwHighDateTime) << 32) + (long)fileTime.dwLowDateTime;
     return DateTime.FromFileTimeUtc(ticks);
 }
 internal ShellItem GetSpecialFolderShellItem(ShellAPI.CSIDL rootFolder)
 {
     return new ShellItem(this, rootFolder);
 }