qt4_1

#include <QApplication>

#include <QFont>

#include <QPushButton>

int main(int argc, char* argv[])

{

    QApplication app(argc, argv);

    QPushButton quit("Quit");

    quit.resize(75, 30);

    quit.setFont(QFont("Times", 18, QFont::Bold));

    QObject::connect(&quit, SIGNAL(clicked()), &app, SLOT(quit()));

    quit.show();

    return app.exec();

}