C++ 设置自动启动

WCHAR pFileName[MAX_PATH] = {};
        //得到程序自身的全路径
        DWORD dwRet = GetModuleFileName(NULL, pFileName, MAX_PATH); 

        HKEY hKey;
        REGSAM flag = KEY_WOW64_64KEY;
        DWORD dwDisposition = REG_OPENED_EXISTING_KEY;
        LONG lRet = RegOpenKeyEx(HKEY_LOCAL_MACHINE, L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", , KEY_ALL_ACCESS | flag, &hKey);
        if ( ERROR_SUCCESS != lRet){
            AfxMessageBox(L"打开注册表失败");
            return;
        }

        lRet = ::RegSetValueEx(hKey, TEXT("TaiSau_SmartCam"), NULL, REG_SZ, (LPBYTE)pFileName, wcslen(pFileName) * sizeof(WCHAR) + ); //设置注册表项
        if ( ERROR_SUCCESS != lRet){
            AfxMessageBox(L"写注册表失败");
            return;
        }

        ::RegCloseKey(hKey); //与RegCreateKeyEx配对写