Setting attribute in webpage and press button 'GO'

[appollosputnik]

I am developing a web application. I need to select an option from dropdown in a website and press 'GO' button.

I am connect with the website like as below.

[code]
QNetworkAccessManager m_manager = new QNetworkAccessManager(this);
connect(m_manager, SIGNAL(finished(QNetworkReply)), this, SLOT(replyFinished(QNetworkReply*)));
m_manager->get(QNetworkRequest(QUrl("http://www.mysite.com/")));

m_WebPage = new QWebPage();
m_WebPage->setNetworkAccessManager(m_manager);
QString attr = m_WebPage->mainFrame()->documentElement().setAttribute("Diablo 3 (Diablo III)", "MySelection");
[/code]

but with this my application crashing. Please tell me how can set an attribute in a webpage and press go. How can I get the attribute and the button 'GO' in my application.

Any suggestions is highly appreciated. Thanks Sujan

[appollosputnik]

To select 2 options I do the following. And also click. But the values in my QWebView are not changing based on this. Please help whats wrong going on.

[code]
QWebElement selectBox =
m_WebView->page()->mainFrame()->findFirstElement("select[id=gameid]");

selectBox.setAttribute("value", "187");

QWebElement selectBox2 =
       m_WebView->page()->mainFrame()->findFirstElement("select[id=hostid]");

selectBox2.setAttribute("value", "24351");


QWebElement button = m_WebView->page()->mainFrame()->documentElement().findFirst("input[type=button]");
button.evaluateJavaScript("this.click()");

[/code]