import QtQuick 2.1 import QtQuick.Window 2.1 Window { id: window1; objectName: "window1"; width: 100; height: 100; visible: true color: "blue" property alias win2: window2 property alias win3: window3 property alias win4: window4 property alias win5: window5 Window { id: window2; objectName: "window2"; width: 100; height: 100; visible: true color: "green" Window { id: window3; objectName: "window3"; width: 100; height: 100; visible: true } Window { //Is invisible by default id: window4 objectName: "window4"; height: 200 width: 200 color: "black" Window { id: window5 objectName: "window5"; height: 200 width: 200 visible: true } } } }