qt-everywhere-src-5.15.1/qtcharts/examples/charts/qmloscilloscope/qml/qmloscilloscope/MultiButton.qml

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import QtQuick 2.0
import QtQuick.Controls 1.0
import QtQuick.Controls.Styles 1.0

Item {
    id: button

    property string text: "Option: "
    property variant items: ["first"]
    property int currentSelection: 0
    signal selectionChanged(variant selection)

    signal clicked

    implicitWidth: buttonText.implicitWidth + 5
    implicitHeight: buttonText.implicitHeight + 10

    Button {
        id: buttonText
        width: parent.width
        height: parent.height

        style: ButtonStyle {
            label: Component {
                Text {
                    text: button.text + button.items[currentSelection]
                    clip: true
                    wrapMode: Text.WordWrap
                    verticalAlignment: Text.AlignVCenter
                    horizontalAlignment: Text.AlignHCenter
                    anchors.fill: parent
                }
            }
        }
        onClicked: {
            currentSelection = (currentSelection + 1) % items.length;
            selectionChanged(button.items[currentSelection]);
        }
    }
}