How To Create Components Dynamically In Qml

How to dynamically add components in QML? I refered this link to add a component(Rectangle component) into main.qml window upon a button click in same window. 'Ubuntu.Components' i

Solution 1:

main.qml

importQtQuick2.6importQtQuick.Window2.2importQtQuick.Controls1.4Window {
    id:appWindow
    visible: true
    width: 640height: 480title: qsTr("Hello World")
    property int count: 0
    signal forward
    function fun1(argument1){
     console.log("A function fun1()in the main QML file is invoked by dynmic object")
     console.log("Returned parameter from the QML dynamic objects = ", argument1)
     }

    Item {
        id: root
        width: parent.width
        height: parent.width
        function createItem() {
            Qt.createQmlObject("import QtQuick 2.5; Rectangle { x: 100; y: 100; width: 100; height: 100; color: \"blue\" }", root, "dynamicItem");
        }
    }

    Button{
        width: 200height: 50text:"Click Me"y:400x:350onClicked: {
            count++
            if(count==1)
            Qt.createComponent("Sprite.qml").createObject(appWindow, {"x": 100, "y": 100});
            if(count===2){
                appWindow.forward()
            }
       }
   }
   onForward:console.log("forward signal is emitted in main QML")
}

Sprite.qml

import QtQuick 2.0

Rectangle {
    id:idRect
    signal buttonClicked()
    width: 80;
    height: 50;
    color: "red";
    x:10;
    y:100
    property string fromCallee:'This value is send signal argument'
    signal send(string pass);
    MouseArea {
                  id: leftMouseArea
                  anchors.fill: parent
                  onClicked:idRect.buttonClicked()
              }
     Component.onCompleted:{
     forward.connect(fun2);
     send.connect(fun1);
     send(fromCallee);
     }
      function fun2(){
          console.log('signal received at dynamic object')
          console.log("value of main qml property 'count'="+count)
      }
}