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//! [16]
QPushButton *button = new QPushButton();
button->setObjectName("button");
interpreter->addTransientObject(button);
//! [16]


//! [17]
QPushButton *button = new QPushButton();
QScriptValue scriptButton = engine.newQObject(button);
engine.globalObject().setProperty("button", scriptButton);
//! [17]


//! [18]
ModuleFactory::ModuleFactory()
{
    registerClass( "ImageSource", &ImgSource::staticMetaObject);
    ...
}

QObject *ModuleFactory::create( const QString &type,
        			const QVariantList &,
        			QObject * )
{
    if ( type == "ImageSource" )
        return new ImgSource();
    ...
}

...

interpreter.addObjectFactory(new ModuleFactory());
//! [18]


//! [19]
QScriptValue construct_QPushButton(QScriptContext *, QScriptEngine *engine) {
    return engine->newQObject(new QPushButton());
}

...

QScriptValue constructor = engine.newFunction(construct_QPushButton);
QScriptValue value =
    engine.newQMetaObject(&QPushButton::staticMetaObject,
                          constructor);
engine.globalObject().setProperty("QPushButton", value);
//! [19]