[Interest] Preventing Apple Pencil to be grabbed by a PointHandler when a Flickable is on top

[Shawn Rutledge]

You are welcome to write up a bug about this.  And thanks for the complete reproducer already.

I can reproduce it with my active-stylus touchscreen (or a Wacom tablet, no doubt).  Regardless of hardware there's a series of QTabletEvents, which are little used in Qt Quick so far (although it's been on my backlog to make better use of them, for many years now!) After each unhandled QTabletEvent, a QMouseEvent is sent.  In this case you expect it to behave the same as a series of real mouse events, but it doesn’t for some reason.

On Oct 20, 2025, at 18:02, Nuno Santos via Interest <interest at qt-project.org> wrote:

Hi,

I’m having a problem while handling Apple Pencil events.

If it is interacting with a Flickable that has a PointHandler below, it gets picked by the PointHandler too. This does not happen with TouchEvents or MouseEvents?

What’s the solution for this?

Below is a small example that demonstrates the problem.

Thanks in advance!

Regards,

Nuno


Window {
    id: root
    width: 1024
    height: 768
    visible: true
    color: "lightgrey"
    //visibility: Window.Hidden
    //Component.onCompleted: show()

    Rectangle {
        width: parent.width * 0.5
        height: parent.height * 0.5
        x: parent.width * 0.25
        y: parent.height * 0.25
        color: "red"
        opacity: 0.5

        PointHandler {
            onGrabChanged: (transition, pointEvent) => {
                console.log("Red received", pointEvent, transition)
            }
        }
    }

    Rectangle {
        width: parent.width * 0.5
        height: parent.height * 0.5
        x: parent.width * 0.4
        y: parent.height * 0.4
        color: "yellow"
        opacity: 0.5

        ListView {
            anchors.fill: parent
            model: ["tes", "ting", "one", "two"]
            delegate: Text {
                text: modelData
            }
        }
    }
}

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<test-apple-pencil.zip>

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