RegistryHelper::valueExists

bool RegistryHelper::valueExists(wstring key, wstring valuename)
{
    HKEY keyHandle = openKey(key, KEY_QUERY_VALUE | KEY_WOW64_64KEY);

    DWORD type;
    DWORD bufSize;
    LSTATUS status = RegQueryValueExW(keyHandle, valuename.c_str(), NULL, &type, NULL, &bufSize);
    RegCloseKey(keyHandle);
    return status == ERROR_SUCCESS;
}