QT 连接SQLServer数据库

QString sConnectionName = pBasicInfoCfg.value("DataBaseCfg/ConnectionName").toString();
    QString sHostName = pBasicInfoCfg.value("DataBaseCfg/HostName").toString();
    QString sDatabaseName = pBasicInfoCfg.value("DataBaseCfg/DatabaseName").toString();
    QString sUserName = pBasicInfoCfg.value("DataBaseCfg/UserName").toString();
    QString sUPassword = pBasicInfoCfg.value("DataBaseCfg/Password").toString();
    m_db = QSqlDatabase::addDatabase("QODBC", sConnectionName);
    m_db.setDatabaseName(QString("DRIVER={SQL SERVER};"
                                         "SERVER=%1;" 
                                         "DATABASE=%2;"
                                         "UID=%3;"     
                                         "PWD=%4;"       
                                         )
                                 .arg(sHostName)
                                 .arg(sDatabaseName)
                                 .arg(sUserName)
                                 .arg(sUPassword)
                                 );

    if(!m_db.open())
    {
        QHelper::setLog("QCapacity::InitDataBase()" + m_db.lastError().text());
        return false;
    }
    qDebug() << "succeed";
    return true;

网上常用的方法连接需要设置ODBC数据源，本方法不用。