I have been trying to create qml component from C++, I created it sucessfully, but it did not appear in window.

Thanks in advance

main.qml

Rectangle {
    color: "white"
}

MyRect.qml

Rectangle {
    width: 100
    height: 100
    color: "red"
}

main.cpp

#include <QQuickWidget>
#include <QQmlEngine>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QQuickWidget *quickWidget = new QQuickWidget;
    quickWidget->setResizeMode(QQuickWidget::SizeRootObjectToView);
    quickWidget->resize(1200, 700);
    quickWidget->setSource(QStringLiteral("qrc:/main.qml"));

    quickWidget->show();

    QQmlComponent component(quickWidget->engine(), QUrl("qrc:/MyRect.qml"));
    qDebug() << component.create(quickWidget->rootContext());
    return app.exec();
}