<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Qt 4.3: main.cpp Example File (tutorial/t12/main.cpp)</title> <link href="classic.css" rel="stylesheet" type="text/css" /> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td align="left" valign="top" width="32"><a href="http://www.trolltech.com/products/qt"><img src="images/qt-logo.png" align="left" width="32" height="32" border="0" /></a></td> <td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> · <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a> · <a href="functions.html"><font color="#004faf">Functions</font></a></td> <td align="right" valign="top" width="230"><a href="http://www.trolltech.com"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></a></td></tr></table><h1 align="center">main.cpp Example File<br /><sup><sup>tutorial/t12/main.cpp</sup></sup></h1> <pre><span class="comment"> /**************************************************************************** ** ** 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 1.1, which can be found at ** http://www.trolltech.com/products/qt/gplexception/ and in the file ** GPL_EXCEPTION.txt in this package. ** ** Please review the following information to ensure GNU General ** Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If ** you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** In addition, as a special exception, Trolltech, as the sole ** copyright holder for Qt Designer, grants users of the Qt/Eclipse ** Integration plug-in the right for the Qt/Eclipse Integration to ** link to functionality provided by Qt Designer and its related ** libraries. ** ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly ** granted herein. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/</span> #include <QApplication> #include <QFont> #include <QGridLayout> #include <QHBoxLayout> #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(tr("ANGLE")); angle->setRange(5, 70); LCDRange *force = new LCDRange(tr("FORCE")); 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))); QPushButton *shoot = new QPushButton(tr("&Shoot")); shoot->setFont(QFont("Times", 18, QFont::Bold)); connect(shoot, SIGNAL(clicked()), cannonField, SLOT(shoot())); QHBoxLayout *topLayout = new QHBoxLayout; topLayout->addWidget(shoot); topLayout->addStretch(1); QVBoxLayout *leftLayout = new QVBoxLayout; leftLayout->addWidget(angle); leftLayout->addWidget(force); QGridLayout *gridLayout = new QGridLayout; gridLayout->addWidget(quit, 0, 0); gridLayout->addLayout(topLayout, 0, 1); 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(); }</pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="30%">Copyright © 2008 <a href="trolltech.html">Trolltech</a></td> <td width="40%" align="center"><a href="trademarks.html">Trademarks</a></td> <td width="30%" align="right"><div align="right">Qt 4.3.4</div></td> </tr></table></div></address></body> </html>