If the QML loaded by QtQuickView for some reason wants to exit the application, via Qt.quit() as per normal, this does nothing, just the following warning:

Signal QQmlEngine::quit() emitted, but no receivers connected to handle it. 

Steps

1. Load one of the QtQuickView examples, e.g. qtquickview_java or _kotlin
2. Modify a QML button to call Qt.quit() on click
3. Click the button.