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

    Rectangle {
        id: rectangle
        x: window.width / 2 - width / 2
        y: window.height / 2 - height / 2
        width: window.width / 4
        height: window.height / 4
        color: "#000000"
        scale: 2
    }
}