Show who is the room admin on join (no tested, also I don't like how it is done via server warnings, but it seems there's no other solution compatible with .17)
#include <QtGui/QApplication>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}