//! [0]
QDBusReply<QString> reply = interface->call("RemoteMethod");
if (reply.isValid())
    // use the returned value
    useValue(reply.value());
else
    // call failed. Show an error condition.
    showError(reply.error());
//! [0]


//! [1]
QString reply = interface->call("RemoteMethod");
//! [1]