[Solved] How set user-agent in QWebView?

[Pawelitel]

How can I change HTTP_USER_AGENT used by QWebView?
In half-measure I can change name and version of application, such as
@ app.setApplicationName(QString("Chrome"));
app.setApplicationVersion(QString("15.0.874.121"));@
but I can not change version of WebKit and OS. Ideally I would like to completely change HTTP_USER_AGENT and HTTP_ACCEPT_LANGUAGE to arbitrary values ​​for QWebView.

I can download individual pages by using the
@void load ( const QNetworkRequest & request, QNetworkAccessManager::Operation operation = QNetworkAccessManager::GetOperation, const QByteArray & body = QByteArray() )@
and in QNetworkRequest change setRawHeader
but how do I replace HTTP_USER_AGENT for any user action?
As alternative i can make proxy, which changes HTTP_USER_AGENT and HTTP_ACCEPT_LANGUAGE

UPDATE
Volker, thanks, it work
My implementation:
@class QWebPageChrome : public QWebPage
{
Q_OBJECT
public:
QString userAgentForUrl ( const QUrl & url ) const;
};

class QWebPageFirefox : public QWebPage
{
Q_OBJECT
public:
QString userAgentForUrl ( const QUrl & url ) const;
};@

@QString QWebPageChrome::userAgentForUrl ( const QUrl & url ) const
{
return "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2";
}
QString QWebPageFirefox::userAgentForUrl ( const QUrl & url ) const
{
return "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0";
}@

@ QWebView *chromeView = new QWebView(this);
QWebView *firefoxView = new QWebView(this);
QWebPageChrome *pageChrome= new QWebPageChrome();
QWebPageFirefox *pageFirefox= new QWebPageFirefox();
chromeView->setPage(pageChrome);
firefoxView->setPage(pageFirefox);@

[goetz]

Have a look at "QWebPage::userAgentForUrl() ":http://doc.qt.nokia.com/4.7/qwebpage.html#userAgentForUrl

[dv879]

I just wanted to thank you guys! Volker, for sharing your knowledge and Pawelitel for sharing his implementation. Works like a charm! :)