WheelHandler not eating events

fcarney

import QtQuick 2.15
import QtQuick.Window 2.15

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Wheel Handler Issue")

    WheelHandler {
        objectName: "handler1"

        onWheel: {
            console.log(objectName)

            event.accepted = true
        }
    }

    WheelHandler {
        objectName: "handler2"

        onWheel: {
            console.log(objectName)

            event.accepted = true
        }
    }
}

Output:

qml: handler2
qml: handler1

Shouldn't the "event.accepted = true" keep the first wheel handler from firing?

fcarney

Okay, feeling a little bit better about this. My test case is something that shouldn't happen anyway:

import QtQuick 2.15
import QtQuick.Window 2.15

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Wheel Handler Issue")

    Item {
        anchors.fill: parent

        WheelHandler {
            objectName: "handler1"

            onWheel: {
                console.log(objectName)

                event.accepted = true
            }
        }
    }

    Item {
        anchors.fill: parent

        WheelHandler {
            objectName: "handler2"

            onWheel: {
                console.log(objectName)

                event.accepted = true
            }
        }
    }
}

Item precedence solves the need to redefine WheelHandler if needed.
result:

qml: handler2

Handler 1 no longer fires. Yay!