doc/src/snippets/statemachine/main.cpp
author Eckhart Koeppen <eckhart.koppen@nokia.com>
Thu, 08 Apr 2010 14:19:33 +0300
branchRCL_3
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtGui>
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int main(int argv, char **args)
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{
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    QApplication app(argv, args);
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    QLabel *label = new QLabel;
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//![0]
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    QStateMachine machine;
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    QState *s1 = new QState();
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    QState *s2 = new QState();
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    QState *s3 = new QState();
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//![0]
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//![4]
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    s1->assignProperty(label, "text", "In state s1");
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    s2->assignProperty(label, "text", "In state s2");
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    s3->assignProperty(label, "text", "In state s3");
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//![4]
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//![5]
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    QObject::connect(s3, SIGNAL(entered()), button, SLOT(showMaximized()));
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    QObject::connect(s3, SIGNAL(exited()), button, SLOT(showMinimized()));
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//![5]
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//![1]
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    s1->addTransition(button, SIGNAL(clicked()), s2);
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    s2->addTransition(button, SIGNAL(clicked()), s3);
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    s3->addTransition(button, SIGNAL(clicked()), s1);
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//![1]
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//![2]
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    machine.addState(s1);
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    machine.addState(s2);
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    machine.addState(s3);
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    machine.setInitialState(s1);
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//![2]
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//![3]
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    machine.start();
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//![3]
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    label->show();
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    return app.exec();
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}