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  1. Qt
  2. QTBUG-127475

qmllint's error messages should be easier to understand

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    • Icon: Suggestion Suggestion
    • Resolution: Unresolved
    • Icon: P2: Important P2: Important
    • 6.11
    • 6.7.1
    • QML: Tooling
    • None

      I've tried qmllint for the coffee machine example in Qt 6.7.1 and got so many errors which are difficult to fix just based on the provided error message. If it's so difficult even for Qt employees, it would be much more difficult for new Qt users to actually fix the issues pointed out by qmllint.

      Here's one example:

      Error: C:/Qt/Examples/Qt-6.7.1/demos/coffee/Insert.qml:6:5: 'continueButton' is used but it is not resolved [unresolved-type]
    continueButton.onClicked: applicationFlow.continueButton()
    ^^^^^^^^^^^^^^
Error: C:/Qt/Examples/Qt-6.7.1/demos/coffee/Insert.qml:7:5: 'cancelButton' is used but it is not resolved [unresolved-type]
    cancelButton.onClicked: applicationFlow.cancelButton()

      It says "continueButton" cannot be resolved.
      When you check Insert.qml, you see this code:

      InsertForm {
    continueButton.onClicked: applicationFlow.continueButton()
    cancelButton.onClicked: applicationFlow.cancelButton()
}

      cancelButton is atually declared in InsertForm.ui.qml:

              CustomButton {
            id: cancelButton
            Layout.alignment: Qt.AlignHCenter | Qt.AlignTop
            Layout.minimumWidth: 150
            Layout.minimumHeight: 40
            showIcon: false
            buttonText: "Cancel"
        }

      and it's aliased like so:

      Item {
    id: root
    property alias continueButton: continueButton
    property alias cancelButton: cancelButton

      This seems to be totally okay and I personally cannot figure out how I'm supposed to resolve this issue.

      Here's another example:

      Error: C:/Qt/Examples/Qt-6.7.1/demos/coffee/Home.qml:7:9: Property "grid.states" does not exist [missing-property]
        State {
        ^^^^^

      When you check Home.qml, you see this code:

      HomeForm {
    grid.states: [
        State {
            name: "small"
            when: ((Screen.height * Screen.devicePixelRatio)
                   + (Screen.width * Screen.devicePixelRatio)) < 2000
            PropertyChanges {
                target: header
                font.pixelSize: 28
            }
            PropertyChanges {
                target: caption
                font.pixelSize: 14
            }
        }
    ]
}

      HomeForm.ui.qml has grid inside:

      Item {
    id: home
    property alias getStartedbutton: getStartedButton
    property alias grid: grid
    property alias header: header
    property alias caption: caption

      and grid is GridLayout which inherits Item therefore has to have states property:

          GridLayout {
        id: grid
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.top: home.top
        flow: GridLayout.TopToBottom
        Image {
            id: image

      Again, I cannot understand how I can resolve this issue.

       

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            qtqmlteam Qt Qml Team User
            mikio_hirai Mikio Hirai
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              Created:
              Updated:

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