QtQuick's PinchArea seems unresponsive

[laerne]

In the below code,

@import QtQuick 2.0

Item {

width: 320
height: 480

Rectangle {
    id: gisview
    anchors.fill: parent
    color: "black"
}
PinchArea {
    anchors.fill: gisview
    enabled: true
    onPinchStarted: {
        console.log("pinch ON !...")
    }
    onPinchUpdated: {
        console.log("and ON...")
    }
    onPinchFinished: {
        console.log("and finally off.")
    }

}

}@

When I click&drag on the window, nothing is written to the console. Am I missing what is PinchArea for or should I specify more properties to have it working ?