int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);

     QX11EmbedContainer container;
     container.show();

    qDebug() << container.winId();

     return app.exec();
 }

int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);

     if (app.arguments().count() != 2) {
         qFatal("Error - expected window id as argument");
         return 1;
     }

     QString windowId(app.arguments()[1]);
     EmbedWidget window;
     window.embedInto(windowId.toULong());
     window.show();

     return app.exec();
 }