app.qml Example File

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import Charts 1.0
import QtQuick 2.0

Item {
    width: 300; height: 200

    Row {
        anchors.centerIn: parent
        spacing: 20

        PieChart {
            id: chartA
            width: 100; height: 100
            color: "red"
        }

        PieChart {
            id: chartB
            width: 100; height: 100
            color: chartA.color
        }
    }

    MouseArea {
        anchors.fill: parent
        onClicked: { chartA.color = "blue" }
    }

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