Switch hide flag on Windows with Qt

bool switchHideFlagOnWindows(const QString file)
{
#ifdef Q_OS_WIN32
    LPCWSTR path = (const wchar_t *)file.utf16();
    DWORD attr = GetFileAttributesW(path);

    if(attr == INVALID_FILE_ATTRIBUTES) {
        qDebug() << "Windowssystem error: INVALID_FILE_ATTRIBUTES";
        return false;
    }

    DWORD nattr = attr ^ FILE_ATTRIBUTE_HIDDEN;

    bool ret = SetFileAttributesW(path, nattr);

    if(!ret) {
        qDebug() << "Windowssystem couldn´t switch flag for hide!";
    }

    return ret;
#else
    //On non windows os this function will return always true - so that this function don´t block the process
    Q_UNUSED(file);
    return true;
#endif
}