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  1. Qt
  2. QTBUG-91706

QML: Subclassing a QQuickItem that has revisioned properties fails

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    • Linux/X11, macOS
    • c3999f96536ac359ba94d80755230e85238d578a

      QQuickTableView has some properties with a revision, e.g:

      Q_PROPERTY(int topRow READ topRow NOTIFY topRowChanged REVISION(6, 0))

      But if you subclass QQuickTableView from outside Qt (e.g like we do in Qt for TreeView), those revisioned properties will not be available from QML. E.g, if you do:

      #include <QtQuick/private/qquicktableview_p.h>

class TreeView : public QQuickTableView
{
    Q_OBJECT
    QML_ELEMENT

public:
    TreeView(QQuickItem *parent = nullptr)
        : QQuickTableView(parent)
    {}
};

      ...and then use it:

      import QtQuick
import QtQuick.Window
import TreeView

Window {
    width: 480
    height: 640
    visible: true

    TreeView {
        anchors.fill: parent
        model: 10
        rowSpacing: 1
        delegate: Rectangle {
            implicitWidth: 100
            implicitHeight: 20
            color: "green"
        }

        onTopRowChanged: print(topRow)
    }
}

      You will get an error that says:

      qrc:/main.qml:20:9: "TreeView.onTopRowChanged" is not available in TreeView 6.0.

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            max.goldstein Maximilian Goldstein
            richard Richard Moe Gustavsen
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              Created:
              Updated:
              Resolved: