HKEY hKey;
    TCHAR Nick;
    DWORD Nick_data = sizeof Nick;

    if (RegOpenKeyEx(HKEY_CURRENT_USER, TEXT("Software//SAMP"), NULL, KEY_READ, &hKey) == ERROR_SUCCESS)
    {
        if (RegQueryValueEx(hKey, TEXT("PlayerName"), NULL, NULL, (BYTE*)Nick, &Nick_data) == ERROR_SUCCESS) return Nick;
    }
    MessageBox(NULL, (LPCWSTR)Nick, (LPCWSTR)L"Тест", MB_ICONEXCLAMATION);