How can I automatically detect a proxy?

Question

For one of my projects, I made a QWebView. Everything is working fine, but when I use it at school, I get an error because the proxy is not defined. How would I make it possible to auto detect the proxy, like in Firefox and IE?

I've found this in QNetworkProxyFactory:

setUseSystemConfiguration(bool enable)

But I can't find how to use it.

Answer 1

Since setUseSystemConfiguration is a static method, the following might do what you need:

QNetworkProxyFactory::setUseSystemConfiguration(true);

Answer 2

Here is a working example of using the system defined proxy:

QNetworkProxyQuery npq(QUrl("http://www.google.com"));
QList<QNetworkProxy> listOfProxies = QNetworkProxyFactory::systemProxyForQuery(npq);
if (listOfProxies.size())
    QNetworkProxy::setApplicationProxy(listOfProxies[0]);