读写注册表SetRegisterValue和GetRegisterValue

写注册表

DWORD CUtils::SetRegisterValue(HKEY key, LPCSTR path, LPCSTR name, LPBYTE pData, ULONG nLen, DWORD type)
{
    HKEY hKey = NULL;
    DWORD err = STATUS_SUCCESS;

    do
    {
        long lRet = RegCreateKeyExA(key, (LPCSTR)path, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS | KEY_WOW64_64KEY, NULL, &hKey, NULL);
        if (ERROR_SUCCESS != lRet)
        {
            err = GetLastError();
            DebugPrintA("RegCreateKeyExA error[%d,%D]\n", err, lRet);
            break;
        }

        lRet = RegSetValueExA(hKey, name, 0, type, pData, nLen);
        if (ERROR_SUCCESS != lRet)
        {
            err = GetLastError();
            DebugPrintA("RegSetValueExA error[%d]\n", err);
            break;
        }
    } while (0);

    if (hKey)
    {
        RegCloseKey(hKey);
    }

    return err;
}

读注册表

BOOL CUtils::GetRegisterValue(HKEY key, LPCSTR path, LPCSTR name, std::string& strAccessStream)
{
    HKEY hKey = NULL;
    bool bIsok = false;

    do
    {
        long lRet = RegCreateKeyExA(key, (LPCSTR)path, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_READ | KEY_WOW64_64KEY, NULL, &hKey, NULL);
        if (ERROR_SUCCESS != lRet)
        {
            DebugPrintA("RegCreateKeyExA=%d", GetLastError());
            break;
        }

        DWORD len = 0;
        lRet = RegQueryValueExA(hKey, name, 0, NULL, NULL, &len);
        if (ERROR_SUCCESS != lRet)
        {
            DebugPrintA("RegQueryValueExA=%d", lRet);
            break;
        }

        if (len == 0)
        {
            DebugPrintA("RegQueryValueExA datalen=%d", len);
            break;
        }

        strAccessStream.resize(len);
        BYTE* pData = (BYTE*)&strAccessStream.at(0);
        lRet = RegQueryValueExA(hKey, name, 0, NULL, pData, &len);
        if (ERROR_SUCCESS != lRet)
        {
            DebugPrintA("RegQueryValueExA=%d", lRet);
            break;
        }

        bIsok = true;

    } while (0);

    if (hKey)
    {
        RegCloseKey(hKey);
    }

    return bIsok;
}