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main.cpp

/****************************************************************************
**
** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file.  Alternatively you may (at
** your option) use any later version of the GNU General Public
** License if such license has been publicly approved by Trolltech ASA
** (or its successors, if any) and the KDE Free Qt Foundation. In
** addition, as a special exception, Trolltech gives you certain
** additional rights. These rights are described in the Trolltech GPL
** Exception version 1.2, which can be found at
** http://www.trolltech.com/products/qt/gplexception/ and in the file
** GPL_EXCEPTION.txt in this package.
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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****************************************************************************/

//! [0]
#include <QApplication>
#include <QFont>
#include <QGridLayout>
#include <QLCDNumber>
#include <QPushButton>
#include <QSlider>
#include <QVBoxLayout>
#include <QWidget>

//! [1]
class LCDRange : public QWidget
{
public:
    LCDRange(QWidget *parent = 0);
};
//! [0] //! [1] //! [2]

//! [3]
LCDRange::LCDRange(QWidget *parent)
    : QWidget(parent)
{
    QLCDNumber *lcd = new QLCDNumber(2);
    lcd->setSegmentStyle(QLCDNumber::Filled);

    QSlider *slider = new QSlider(Qt::Horizontal);
    slider->setRange(0, 99);
    slider->setValue(0);
    connect(slider, SIGNAL(valueChanged(int)),
            lcd, SLOT(display(int)));

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(lcd);
    layout->addWidget(slider);
    setLayout(layout);
}
//! [2] //! [3] //! [4]

//! [5]
class MyWidget : public QWidget
{
public:
    MyWidget(QWidget *parent = 0);
};
//! [4] //! [5]

//! [6] //! [7]
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()));
//! [7]

//! [8]
    QGridLayout *grid = new QGridLayout;
//! [8] //! [9]
    for (int row = 0; row < 3; ++row) {
//! [9] //! [10]
        for (int column = 0; column < 3; ++column) {
//! [10] //! [11]
            LCDRange *lcdRange = new LCDRange;
//! [11] //! [12]
            grid->addWidget(lcdRange, row, column);
        }
//! [12] //! [13]
    }
//! [13]

//! [14]
    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(quit);
    layout->addLayout(grid);
    setLayout(layout);
}
//! [6] //! [14]

//! [15]
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MyWidget widget;
    widget.show();
    return app.exec();
}
//! [15]

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