QML QQuickText: Cannot anchor to an item that isn't a parent or sibling

Question

When I use TumblerColumn in my Tumbler, I get QML QQuickText: Cannot anchor to an item that isn't a parent or sibling, When I use Tumbler alone the error doesn't appear. I can't figure out what is the problem with TumblerColumn.

Here is my Dialog code

import QtQuick 2.9
import QtQuick.Controls 2.2
import QtQuick.Dialogs 1.2
import QtQuick.Extras 1.2

Dialog {
    id: customTimerInputDialog
    title: "Custom timer"
    height: 150
    width: 300
    standardButtons: StandardButton.Ok | StandardButton.Cancel
    onAccepted: {

    }

    onRejected: {
        console.log("Rejected")
    }

    Column {
        anchors.fill: parent
        Text {
            text: "Timer"
            height: 40
        }

        Tumbler {
            id: tumbler
            TumblerColumn {
                model: 10
            }

            TumblerColumn {
                model: 60
            }
        }
    }
}

TumblerColumn (TumblerStyle.qml) complete source code

...
// line 294
property Component delegate: Item {
    implicitHeight: (control.height - padding.top - padding.bottom) / tumblerStyle.visibleItemCount

    Text {
        id: label
        text: styleData.value
        color: "#666666"
        opacity: 0.4 + Math.max(0, 1 - Math.abs(styleData.displacement)) * 0.6
        font.pixelSize: Math.round(TextSingleton.font.pixelSize * 1.25)
        anchors.centerIn: parent
    }
}
...

Error message

UPDATE

I get the same error with Popup QML Type

Popup {
    id: popup
    x: 100
    y: 100
    width: 200
    height: 300
    modal: true
    focus: true
    closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutsideParent

    Tumbler {
        id: intervalPicker
        TumblerColumn {
            model: 10
        }

        TumblerColumn {
            model: 60
        }
    }
}

@HiI'mFrogatto yes, but I'm not anchoring in my `TumblerColumn` — Junius L, Dec 17 '17 at 10:29
@julekgwa Could you please post source code of `TumblerColumn`? — frogatto, Dec 17 '17 at 10:30
Well someone is trying to do anchoring, how and why cannot be established without posting the relevant code. — dtech, Dec 17 '17 at 10:36
`Dialog` is supposed to have only one child element (i.e. `contentItem`). Please note that `Dialog` itself does not lay out its children. — frogatto, Dec 17 '17 at 10:38
@dtech I'm not trying to anchor anything, I'm using the code from qt. — Junius L, Dec 17 '17 at 10:38
@HiI'mFrogatto `Tumbler` is inside `Column` I was debugging and put it outside of `Column` and forgot to put it back. — Junius L, Dec 17 '17 at 10:43
I'm not sure though, Please use another id instead of `tumbler` for the `Tumbler` element. Does it fix the problem? — frogatto, Dec 17 '17 at 10:59

score -1 · Answer 1 · answered Dec 20 '17 at 15:37

You are mixing Qt Quick Controls 1 and 2. In your Dialog/Popup you import QtQuick.Controls 2.2 and QtQuick.Extras 1.2. Both imports define a Tumbler, but the one from Qt Quick Extras is made to work with Qt Quick Controls 1 (see the imports in TumblerStyle.qml).

If you want to use TumblerColumn and TumblerStyle, you have to use the Tumbler from Qt Quick Extras 1.2.

If you want to use the Tumbler from Qt Quick Controls 2, you cannot use any of the tumbler facility from Qt Quick Extras 1.2.

If you need to have both Qt Quick Extras 1.2 and Qt Quick Controls 2 imported in a qml file, you need to use the as qualifier:

import QtQuick.Extras 1.2 as Extra
import QtQuick.Controls 2.2 as Controls2

...
Extra.Tumbler 
{
...
}

Controls2.Tumbler 
{
...
}
...

QML QQuickText: Cannot anchor to an item that isn't a parent or sibling

1 Answers1