int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

QGuiApplication app(argc, argv);

QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
if (engine.rootObjects().isEmpty())
    return -1;
QObject *object = engine.rootObjects().first();

QObject *test= object->findChild<QObject*>("image");

if(test)
{
    QThread::msleep(2000);

    QQmlProperty::write(test, "visible", "false");
    QThread::msleep(2000);

    QQmlProperty::write(test, "visible", "true");
    QThread::msleep(2000);

    QQmlProperty::write(test, "visible", "false");
    QThread::msleep(2000);

    QQmlProperty::write(test, "visible", "true");
}
return app.exec();
}