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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#ifdef QT_STATEMACHINE_SOLUTION
+#include <qstatemachine.h>
+#include <qstate.h>
+#include <qeventtransition.h>
+#endif
+
+class Window : public QWidget
+{
+public:
+ Window(QWidget *parent = 0)
+ : QWidget(parent)
+ {
+ QPushButton *button = new QPushButton(this);
+ button->setGeometry(QRect(100, 100, 100, 100));
+
+ QStateMachine *machine = new QStateMachine(this);
+
+ QState *s1 = new QState();
+ s1->assignProperty(button, "text", "Outside");
+
+ QState *s2 = new QState();
+ s2->assignProperty(button, "text", "Inside");
+
+ QEventTransition *enterTransition = new QEventTransition(button, QEvent::Enter);
+ enterTransition->setTargetState(s2);
+ s1->addTransition(enterTransition);
+
+ QEventTransition *leaveTransition = new QEventTransition(button, QEvent::Leave);
+ leaveTransition->setTargetState(s1);
+ s2->addTransition(leaveTransition);
+
+ QState *s3 = new QState();
+ s3->assignProperty(button, "text", "Pressing...");
+
+ QEventTransition *pressTransition = new QEventTransition(button, QEvent::MouseButtonPress);
+ pressTransition->setTargetState(s3);
+ s2->addTransition(pressTransition);
+
+ QEventTransition *releaseTransition = new QEventTransition(button, QEvent::MouseButtonRelease);
+ releaseTransition->setTargetState(s2);
+ s3->addTransition(releaseTransition);
+
+ machine->addState(s1);
+ machine->addState(s2);
+ machine->addState(s3);
+ machine->setInitialState(s1);
+ QObject::connect(machine, SIGNAL(finished()), qApp, SLOT(quit()));
+ machine->start();
+ }
+};
+
+int main(int argc, char **argv)
+{
+ QApplication app(argc, argv);
+ Window window;
+ window.resize(300, 300);
+ window.show();
+
+ return app.exec();
+}