app.qml Example File

declarative/tutorials/extending/chapter2-methods/app.qml
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 import Charts 1.0
 import QtQuick 1.0

 Item {
     width: 300; height: 200

     PieChart {
         id: aPieChart
         anchors.centerIn: parent
         width: 100; height: 100
         color: "red"

         onChartCleared: console.log("The chart has been cleared")
     }

     MouseArea {
         anchors.fill: parent
         onClicked: aPieChart.clearChart()
     }

     Text {
         anchors { bottom: parent.bottom; horizontalCenter: parent.horizontalCenter; bottomMargin: 20 }
         text: "Click anywhere to clear the chart"
     }
 }