MultiObjectRegistryRef QML Type

// In a QML file, register something that gets created multiple times (e.g. a repeater delegate)
Repeater {
    model: 4
    Rectangle {
        id: qmlRepeaterDelegate
        required property int index
        x: 50 * index
        width: 40
        height: 40
        MouseArea {
            property int repeaterIndex: qmlRepeaterDelegate.index
            anchors.fill: parent
            ObjectRegistry.key: "RepeatedMouseArea"
        }
    }
}

// In another QML file, refer to the registered objects
MultiObjectRegistryRef {
    id: repeaterRef
    key: "RepeatedMouseArea"

    onObjectAdded: (object)=> {
        // Connect each object's clicked signal as they are added
        object.clicked.connect(function (mouse) { clickedHandler(object); })
    }

    function clickedHandler(object) {
        console.log("Index clicked: " + object.repeaterIndex)
    }
}