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# main.cpp Example File
tutorials/tutorial/t7/main.cpp

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

     #include "lcdrange.h"

     class MyWidget : public QWidget
     {
     public:
         MyWidget(QWidget *parent = 0);
     };

     MyWidget::MyWidget(QWidget *parent)
         : QWidget(parent)
     {
         QPushButton *quit = new QPushButton(tr("Quit"));
         quit->setFont(QFont("Times", 18, QFont::Bold));

         connect(quit, SIGNAL(clicked()), qApp, SLOT(quit()));

         QGridLayout *grid = new QGridLayout;
         LCDRange *previousRange = 0;

         for (int row = 0; row < 3; ++row) {
             for (int column = 0; column < 3; ++column) {
                 LCDRange *lcdRange = new LCDRange;
                 grid->addWidget(lcdRange, row, column);
                 if (previousRange)
                     connect(lcdRange, SIGNAL(valueChanged(int)),
                             previousRange, SLOT(setValue(int)));
                 previousRange = lcdRange;
             }
         }
         QVBoxLayout *layout = new QVBoxLayout;
         layout->addWidget(quit);
         layout->addLayout(grid);
         setLayout(layout);
     }

     int main(int argc, char *argv[])
     {
         QApplication app(argc, argv);
         MyWidget widget;
         widget.show();
         return app.exec();
     }