Make stringlistmodel example workl with ListView not being the top level item

[HJPVVV]

I would love to see this example stringlistmodel work with the ListView not being the top level item.
The C++ code sets the initial property "model" of QQuickView. This does not work if the ListView is wrapped in e.g. some layout item. How could I make this work?

[HJPVVV]

I managed to find out myself. Here is the code, in case others might want the same:

C++

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QStringList>

#include <qqmlengine.h>
#include <qqmlcontext.h>
#include <qqml.h>
#include <QtQuick/qquickitem.h>
#include <QtQuick/qquickview.h>

int main(int argc, char ** argv)
{
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    const QUrl url(QStringLiteral("qrc:/view.qml"));
    QObject::connect(
               &engine,
               &QQmlApplicationEngine::objectCreated,
               &app,
               [url](QObject *obj, const QUrl &objUrl) {if (!obj && url == objUrl) QCoreApplication::exit(-1);}, Qt::QueuedConnection);
    engine.load(url);

    //  get the root object of the loaded QML
    QList<QObject*> root_objects(engine.rootObjects());

    QStringList projectList = {
        "Project 1",
        "Project 2",
        "Project 3",
        "Project 4"
    };

    const QObjectList& children(root_objects[0]->children());
    if (!children.isEmpty())
    {
        QList<QObject*> lists(root_objects[0]->findChildren<QObject*>("listViewProjects"));
        if (!lists.isEmpty())
            lists.first()->setProperty("model", QVariant::fromValue(projectList));
    }

    return app.exec();
}

QML

import QtQuick 2.4
import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Window 2.5

Window {
    id: window
    visible: true
    width: 640
    height: 480
    title: qsTr("ListView")

    ListView {
        id: listViewProjects
        objectName: "listViewProjects"
        anchors.fill: parent

        delegate: Item {
            id: project
            required property string modelData
            required property int index
            height: 30
            width: parent.width
            Text {
                anchors.verticalCenter: parent.verticalCenter
                text: parent.modelData
            }
            MouseArea {
                anchors.fill: parent
                onClicked: listViewProjects.currentIndex = parent.index
            }
        }
        highlight: Rectangle { color: "lightsteelblue"; radius: 2 }
        focus: true
    }
}

It also shows how to use the index variable for setting the selection with the mouse: once a required property is declared (modelData), you must declare all properties you intend to use. This is not shown in any other example I could find. If you fail to do this, index is undefined.