static QByteArray toWindowsIdLiteral(quint16 windowsIdKey)
{
    for (quint16 i = 0; i < windowsDataTableSize; ++i) {
        const QWindowsData *data = windowsData(i);
        if (data->windowsIdKey == windowsIdKey)
            return windowsId(data);
    }
    return QByteArray();
}
static quint16 toWindowsIdKey(const QByteArray &winId)
{
    for (quint16 i = 0; i < windowsDataTableSize; ++i) {
        const QWindowsData *data = windowsData(i);
        if (windowsId(data) == winId)
            return data->windowsIdKey;
    }
    return 0;
}