/****************************************************************************

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** contained in the Technology Preview License Agreement accompanying

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** General Public License version 2.1 as published by the Free Software

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** packaging of this file.  Please review the following information to

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****************************************************************************/

#include <QtGui>

//! [0]

class Window : public QWidget

{

public:

    Window(QWidget *parent = 0)

        : QWidget(parent)

    {

        QPushButton *button = new QPushButton(this);

        button->setGeometry(QRect(100, 100, 100, 100));

//! [0]

//! [1]

        QStateMachine *machine = new QStateMachine(this);

        QState *s1 = new QState();

        s1->assignProperty(button, "text", "Outside");

        QState *s2 = new QState();

        s2->assignProperty(button, "text", "Inside");

//! [1]

//! [2]

        QEventTransition *enterTransition = new QEventTransition(button, QEvent::Enter);

        enterTransition->setTargetState(s2);

        s1->addTransition(enterTransition);

//! [2]

//! [3]

        QEventTransition *leaveTransition = new QEventTransition(button, QEvent::Leave);

        leaveTransition->setTargetState(s1);

        s2->addTransition(leaveTransition);

//! [3]

//! [4]

        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);

//! [4]

//! [5]

        machine->addState(s1);

        machine->addState(s2);

        machine->addState(s3);

        machine->setInitialState(s1);

        machine->start();

    }

};

//! [5]

//! [6]

int main(int argc, char **argv)

{

    QApplication app(argc, argv);

    Window window;

    window.resize(300, 300);

    window.show();

    return app.exec();

}

//! [6]