import Qt 4.7 import Qt.test 1.0 QtObject { property variant obj obj: MyQmlObject { id: myObject value: 92 } property bool test1: false property bool test2: false property bool test3: false property bool test4: false Component.onCompleted: { test1 = myObject.value == 92; test2 = obj.value == 92; myObject.deleteOnSet = 1; test3 = myObject == null test4 = obj == null } }