Qt on PlayBook hello world QML code

import QtQuick 1.1
import com.nokia.symbian 1.1

Rectangle {
    width: 1024
    height: 600
    color: "pink"

    Text {
        id: sometext
        text: "Tap and drag NAO!"
        horizontalAlignment: Text.AlignHCenter
        transformOrigin: Item.Center
        font.pointSize: 36
        font.family: "Verdana"
        smooth: false
        scale: 1
        x: (parent.width - width) / 2
        y: (parent.height - height) / 2

        Component.onCompleted: {
            myanim.start()
        }

    }

    ListView {
        id: grid
        anchors.centerIn: parent

        width: parent.width
        height: parent.height

        maximumFlickVelocity: 3000
        model: gallery

        delegate:
             Component {
                      id: fruitDelegate
                      Row {
                          height: childrenRect.height
                          spacing: 10
                          Button{ text: "Btn Cmpnt"}
                          Text { color: "white" ; text: name }
                          Text { color: "white" ; text: '$' + cost }
                      }
                  }
        }


    ListModel {
         id: gallery
         ListElement {
             name: "Apple"
             cost: 2.45
         }
         ListElement {
             name: "Orange"
             cost: 3.25
         }
         ListElement {
             name: "Banana"
             cost: 1.95
         }
     }


    MouseArea {
        x: 0
        y: 0
        width: 1024
        height: 600
        anchors.rightMargin: 20
        anchors.bottomMargin: 20
        anchors.leftMargin: 20
        anchors.topMargin: 20
        anchors.fill: parent
        onPositionChanged: {
            sometext.x = mouse.x - sometext.width / 2
            sometext.y = mouse.y - sometext.height / 2
        }
    }

    SequentialAnimation {
        id: myanim
        loops: Animation.Infinite

        ParallelAnimation {
            NumberAnimation { target: sometext; property: "rotation";
                from: 0; to: 360; duration: 1000; easing.type: Easing.OutBack;
            }
            NumberAnimation { target: sometext; property: "opacity";
                from: 0.2; to: 1; duration: 2000; easing.type: Easing.InQuad;
            }
        }

        ParallelAnimation {
            NumberAnimation { target: sometext; property: "rotation";
                from: 0; to: 360; duration: 2000; easing.type: Easing.OutBack;
            }
            NumberAnimation { target: sometext; property: "opacity";
                to: 0.2; duration: 2000; easing.type: Easing.InQuart;
            }
        }
    }

}