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main.cpp Example File
tutorial/t6/main.cpp

    /****************************************************************
    **
    ** Qt tutorial 6
    **
    ****************************************************************/

    #include <QApplication>
    #include <QFont>
    #include <QGridWidget>
    #include <QLCDNumber>
    #include <QPushButton>
    #include <QSlider>
    #include <QVBoxWidget>

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

    LCDRange::LCDRange(QWidget *parent)
        : QVBoxWidget(parent)
    {
        QLCDNumber *lcd = new QLCDNumber(2, this);
        QSlider *slider = new QSlider(Qt::Horizontal, this);
        slider->setRange(0, 99);
        slider->setValue(0);
        connect(slider, SIGNAL(valueChanged(int)),
                lcd, SLOT(display(int)));
    }

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

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

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

        QGridWidget *grid = new QGridWidget(4, this);
        for (int row = 0; row < 4; ++row) {
            for (int column = 0; column < 4; ++column) {
                (void) new LCDRange(grid);
            }
        }
    }

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


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Qt 4.0.0-b1