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# main.cpp Example File
tutorial/t3/main.cpp

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     #include <QApplication>
     #include <QFont>
     #include <QPushButton>
     #include <QWidget>

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

         QWidget window;
         window.resize(200, 120);

         QPushButton quit("Quit", &window);
         quit.setFont(QFont("Times", 18, QFont::Bold));
         quit.setGeometry(10, 40, 180, 40);
         QObject::connect(&quit, SIGNAL(clicked()), &app, SLOT(quit()));

         window.show();
         return app.exec();
     }