box->addButton(QtCriticalMsg, tr("Critical"));
box->addButton(QtFatalMsg, tr("Fatal"));
box->toggle(Trace::level);
connect(box, SIGNAL(buttonClicked(int)),
this, SLOT(onLevelButtonClicked(int)));
box->addButton(QtCriticalMsg, tr("Critical"));
box->addButton(QtFatalMsg, tr("Fatal"));
box->toggle(Trace::level);
connect(box, SIGNAL(buttonClicked(int)),
this, SLOT(onLevelButtonClicked(int)));