main.cpp Example File
tutorial/t10/main.cpp
/****************************************************************************
**
** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
**
** This file is part of the documentation of the Qt Toolkit.
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** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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#include <QApplication>
#include <QFont>
#include <QGridLayout>
#include <QPushButton>
#include <QVBoxLayout>
#include "cannonfield.h"
#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()));
LCDRange *angle = new LCDRange;
angle->setRange(5, 70);
LCDRange *force = new LCDRange;
force->setRange(10, 50);
CannonField *cannonField = new CannonField;
connect(angle, SIGNAL(valueChanged(int)),
cannonField, SLOT(setAngle(int)));
connect(cannonField, SIGNAL(angleChanged(int)),
angle, SLOT(setValue(int)));
connect(force, SIGNAL(valueChanged(int)),
cannonField, SLOT(setForce(int)));
connect(cannonField, SIGNAL(forceChanged(int)),
force, SLOT(setValue(int)));
QVBoxLayout *leftLayout = new QVBoxLayout;
leftLayout->addWidget(angle);
leftLayout->addWidget(force);
QGridLayout *gridLayout = new QGridLayout;
gridLayout->addWidget(quit, 0, 0);
gridLayout->addLayout(leftLayout, 1, 0);
gridLayout->addWidget(cannonField, 1, 1, 2, 1);
gridLayout->setColumnStretch(1, 10);
setLayout(gridLayout);
angle->setValue(60);
force->setValue(25);
angle->setFocus();
}
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MyWidget widget;
widget.setGeometry(100, 100, 500, 355);
widget.show();
return app.exec();
}