for(;;)
    {
        if (info->FileNameLength>=sizeof(WCHAR))
        {
            std::wstring path(root_dir);
            path.append(info->FileName, info->FileNameLength/sizeof(WCHAR));
            _listener->OnFSChanged(info->Action, path);
        }

        if (!info->NextEntryOffset) break;
        info = (PFILE_NOTIFY_INFORMATION)(((ULONG_PTR)info)+info->NextEntryOffset);
    }