main.cpp Example File
tutorial/t5/main.cpp
/****************************************************************************
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** This file is part of the documentation of the Qt Toolkit.
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/****************************************************************
**
** Qt tutorial 5
**
****************************************************************/
#include <QApplication>
#include <QFont>
#include <QLCDNumber>
#include <QPushButton>
#include <QSlider>
#include <QVBoxLayout>
#include <QWidget>
class MyWidget : public QWidget
{
public:
MyWidget(QWidget *parent = 0);
};
MyWidget::MyWidget(QWidget *parent)
: QWidget(parent)
{
QPushButton *quit = new QPushButton("Quit");
quit->setFont(QFont("Times", 18, QFont::Bold));
QLCDNumber *lcd = new QLCDNumber(2);
QSlider *slider = new QSlider(Qt::Horizontal);
slider->setRange(0, 99);
slider->setValue(0);
connect(quit, SIGNAL(clicked()), qApp, SLOT(quit()));
connect(slider, SIGNAL(valueChanged(int)),
lcd, SLOT(display(int)));
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(quit);
layout->addWidget(lcd);
layout->addWidget(slider);
setLayout(layout);
}
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MyWidget widget;
widget.show();
return app.exec();
}