注册表操作

int CSysInfoHelper::RegisterStartFunction(const CString &valueName, 
                                          const CString &commondLine,
                                          HKEY hKey, 
                                          LPCTSTR lpSubKey)
{
    //写入注册表,开机自启动 
    HKEY hkResult = NULL; 

    int result = -1;

    do 
    {
        DWORD dwDisposition = 0;
        LONG lRet = RegCreateKeyEx(hKey, lpSubKey, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, 
            NULL, &hkResult, &dwDisposition);
        if (ERROR_SUCCESS != lRet)
        {
            break;
        }

        lRet = RegSetValueEx(hkResult, valueName, 0, REG_SZ, (BYTE*)(const wchar_t*)commondLine, commondLine.GetLength() * sizeof(wchar_t));
        if (ERROR_SUCCESS != lRet)
        {
            break;
        }

        result = 1;

    } while (false);

    if (hkResult != NULL)
    {
        //关闭注册表 
        RegCloseKey(hkResult); 
    }

    return result;
}

int CSysInfoHelper::IsFindKeyInRegedit(const CString &valueName, 
                                       HKEY hKey, 
                                       LPCTSTR lpSubKey)
{
    //写入注册表,开机自启动 
    HKEY hkResult = NULL; 

    int result = -1;

    do 
    {
        LONG lRet = RegOpenKeyEx(hKey, lpSubKey, 0, KEY_READ, &hkResult);
        if (ERROR_SUCCESS != lRet)
        {
            break;
        }

        DWORD dwSize=0;
        DWORD dwType=0;
        lRet = RegQueryValueEx(hkResult, valueName, 0, &dwType, NULL, &dwSize);
        if (ERROR_SUCCESS != lRet)
        {
            break;
        }

        result = 1;

    } while (false);

    if (hkResult != NULL)
    {
        //关闭注册表 
        RegCloseKey(hkResult); 
    }

    return result;
}