Connect for "proxyAuthenticationRequired" requires for registration of the QNetworkProxy

[TonyR]

I need handle the signal proxyAuthenticationRequired of QNetworkAccessManager and show dialog. I wrote

@ QObject::connect(nam, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)),
mainWin, SLOT(onProxyAuthenticationRequired(QNetworkProxy, QAuthenticator*)));@

where mainWin is a class for main window. But in console i see follow messages

@QObject::connect: Cannot queue arguments of type 'QNetworkProxy'
(Make sure 'QNetworkProxy' is registered using qRegisterMetaType().)@

I knew about typedef and qRegisterMetaType, but I thought that QNetworkProxy should already be registered.

[dangelog]

And instead it's not. :-)
What's the problem in doing that?

[goetz]

I would bet a penny that

@
#include <QNetworkProxy>
// or
#include <QNetworkAccessManager>
@

in the source file that establishes the connection will cure the error.