c++ 读取注册表，读取服务安装位置

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bool DogWork::GetServicePath(const TCHAR* name, mm::mstring & path)
{
    bool res = false;
#ifdef WIN32
    // GetServiceDisplayName()
    mm::mstring lpSubKey(TEXT("SYSTEM\\CurrentControlSet\\services\\"));
    lpSubKey += name;
    do
    {
        HKEY hKey;
        //HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\testdog
        DWORD lResult = ::RegOpenKeyEx(HKEY_LOCAL_MACHINE, lpSubKey.c_str(), 0, KEY_READ, &hKey);
        if (lResult != ERROR_SUCCESS)
        {
            if (lResult == ERROR_FILE_NOT_FOUND)
            {
                LOG_ERROR("Key not found.");
                break;
            }
            else
            {
                LOG_ERROR("Error opening key.");
                break;
            }
            break;
        }
        TCHAR dwValue[4096];
        DWORD dwSize = 4096;
        DWORD dwType = REG_EXPAND_SZ;
        if (::RegQueryValueEx(hKey, TEXT("ImagePath"), 0, &dwType, (LPBYTE)&dwValue, &dwSize) != ERROR_SUCCESS)

        {
            LOG_ERROR("RegQueryValueEx ImagePath.");
            RegCloseKey(hKey);
            break;
        }
        RegCloseKey(hKey);
        path= dwValue;
        res = true;

    } while (0);
#endif
    return res;
}