diff -r 000000000000 -r 1918ee327afb examples/statemachine/pingpong/main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/statemachine/pingpong/main.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,140 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore>
+#include <stdio.h>
+
+//! [0]
+class PingEvent : public QEvent
+{
+public:
+    PingEvent() : QEvent(QEvent::Type(QEvent::User+2))
+        {}
+};
+
+class PongEvent : public QEvent
+{
+public:
+    PongEvent() : QEvent(QEvent::Type(QEvent::User+3))
+        {}
+};
+//! [0]
+
+//! [1]
+class Pinger : public QState
+{
+public:
+    Pinger(QState *parent)
+        : QState(parent) {}
+
+protected:
+    virtual void onEntry(QEvent *)
+    {
+        machine()->postEvent(new PingEvent());
+        fprintf(stdout, "ping?\n");
+    }
+};
+//! [1]
+
+//! [3]
+class PongTransition : public QAbstractTransition
+{
+public:
+    PongTransition() {}
+
+protected:
+    virtual bool eventTest(QEvent *e) {
+        return (e->type() == QEvent::User+3);
+    }
+    virtual void onTransition(QEvent *)
+    {
+        machine()->postDelayedEvent(new PingEvent(), 500);
+        fprintf(stdout, "ping?\n");
+    }
+};
+//! [3]
+
+//! [2]
+class PingTransition : public QAbstractTransition
+{
+public:
+    PingTransition() {}
+
+protected:
+    virtual bool eventTest(QEvent *e) {
+        return (e->type() == QEvent::User+2);
+    }
+    virtual void onTransition(QEvent *)
+    {
+        machine()->postDelayedEvent(new PongEvent(), 500);
+        fprintf(stdout, "pong!\n");
+    }
+};
+//! [2]
+
+//! [4]
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+
+    QStateMachine machine;
+    QState *group = new QState(QState::ParallelStates);
+    group->setObjectName("group");
+//! [4]
+
+//! [5]
+    Pinger *pinger = new Pinger(group);
+    pinger->setObjectName("pinger");
+    pinger->addTransition(new PongTransition());
+
+    QState *ponger = new QState(group);
+    ponger->setObjectName("ponger");
+    ponger->addTransition(new PingTransition());
+//! [5]
+
+//! [6]
+    machine.addState(group);
+    machine.setInitialState(group);
+    machine.start();
+
+    return app.exec();
+}
+//! [6]