protected function checkBrowserQtWebBrowser() {
        if( stripos($this->_agent,'QtWebEngine') !== false ) {
            $aresult  = explode('/',stristr($this->_agent,'QtWebEngine'));
            $aversion = explode('.',$aresult[1]);
            $this->setVersion($aversion[0]);
            $this->setBrowser(self::BROWSER_QTWEB);
            return true;
        }
        return false;
    }