Untitled

int main (int argc, char *argv[]) {
	QApplication mainApp (argc, argv);
	QWidget *mainWindow = new QWidget;
	mainWindow->setWindowTitle("Poseidon GUI");

	QPushButton *quitBtn = new QPushButton ("Quit", mainWindow);
	quitBtn->setGeometry (10, 10, 60, 30);
	quitBtn->setFont(QFont("Arial", 10));
	QObject::connect (quitBtn, SIGNAL (clicked()), mainApp, SLOT (quit()));

	QLabel *mnLb = new QLabel;
	mnLb->setGeometry (70, 40, 80, 50);
	mnLb->setText("first line\nsecond line");

	QHBoxLayout *mnlayout = new QHBoxLayout;
	mnlayout->addWidget(quitBtn);
	mnlayout->addWidget(mnLb);

	mainWindow->setLayout(mnlayout);
	mainWindow->show();
	return mainApp.exec();
}