// static extern uint SHGetPathFromIDList(IntPtr pidl, [MarshalAs(UnmanagedType.LPWStr)]

        static extern bool SHGetPathFromIDList(IntPtr pidl, IntPtr pszPath);

                if (SHGetPathFromIDList(lp, pathPtr))

                if (true != SHGetPathFromIDList(pidl, bufferAddress))

/// Converts an item identifier list to a file system path. (Note: SHGetPathFromIDList calls the ANSI version, must call SHGetPathFromIDListW for .NET)

public static extern bool SHGetPathFromIDListW(IntPtr pidl, [MarshalAs(UnmanagedType.LPTStr)] StringBuilder pszPath);

''' Converts an item identifier list to a file system path. (Note: SHGetPathFromIDList calls the ANSI version, must call SHGetPathFromIDListW for .NET)

<DllImport("shell32.dll", EntryPoint:="SHGetPathFromIDListW", SetLastError:=true, CharSet:=CharSet.Unicode)> _

Public Function SHGetPathFromIDList(pidl As IntPtr, _

Public Declare Function SHGetPathFromIDList Lib "shell32.dll" Alias "SHGetPathFromIDListA" _

            if (true == SHGetPathFromIDListW(ptrDirVideo, sbDirVideo))

        public static extern bool SHGetPathFromIDListW(IntPtr pidl, [MarshalAs(UnmanagedType.LPTStr)] StringBuilder pszPath);