import QtQuick 2.0 import Qt.test.qobjectApi 1.0 as QObjectApi Item { property int variantCanary: 5 property var varCanary: 12 Component.onCompleted: { QObjectApi.QObject.qobjectTestWritableProperty = 42; } Component.onDestruction: { QObjectApi.QObject.qobjectTestWritableProperty = 43; } }