Changing styling of Mesh, throws: CRITICAL Qt : Cannot create accessible child interface for object: QTreeWidget(0x55f81daded20, name = "mColormapTreeWidget") index: 8

[rduivenvoorde]

What is the bug or the crash?

When loading a netcdf in current Master (self compiled) and playing with styling, I get the following Qt errors:

CRITICAL    Qt : Cannot create accessible child interface for object: QTreeWidget(0x55f81daded20, name = "mColormapTreeWidget") index: 8

See image

Steps to reproduce the issue

Load the nc.test from this nc.zip:

test.zip

Enable the Temporal Controller:

Try out some different interpolation and color ramps. And THEN click in one of the classes in the list (below I clicked in the first/orange symbol):

Versions

QGIS version	3.29.0-Master	QGIS code revision	5c604061bce
Qt version	5.15.6
Python version	3.10.8
GDAL/OGR version	3.5.3
PROJ version	9.1.0
EPSG Registry database version	v10.074 (2022-08-01)
GEOS version	3.11.0-CAPI-1.17.0
SQLite version	3.39.4
PostgreSQL client version	unknown
SpatiaLite version	5.0.1
QWT version	6.1.4
QScintilla2 version	2.11.6
OS version	Debian GNU/Linux bookworm/sid

Supported QGIS version

• [X] I'm running a supported QGIS version according to the roadmap.

New profile

• [X] I tried with a new QGIS profile

Additional context

No response

[alexbruy]

Can't reproduce with the master (b4c24c72e986c6de621bba0a6201466e27401bcf), is this still valid?

[rduivenvoorde]

@alexbruy yes, I just compiled master of today. Note that this is a Qt warning so only visible if you build DEBUG version.

This is what I see in my terminal

/home/richard/bin/qgis_/master/debug/bin/qgis(+0xe32a)[0x55937480632a]
/home/richard/bin/qgis_/master/debug/bin/qgis(+0xeb2b)[0x559374806b2b]
/lib/x86_64-linux-gnu/libQt5Core.so.5(+0xc3b50)[0x7efd3dec3b50]
/lib/x86_64-linux-gnu/libQt5Core.so.5(qt_message_output(QtMsgType, QMessageLogContext const&, QString const&)+0xd)[0x7efd3dec50fd]
/lib/x86_64-linux-gnu/libQt5Core.so.5(QDebug::~QDebug()+0x68)[0x7efd3dfc6fa8]
/lib/x86_64-linux-gnu/libQt5Gui.so.5(QAccessibleEvent::accessibleInterface() const+0x23b)[0x7efd3e506a3b]
/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5(+0xed0b9)[0x7efca617b0b9]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(QTreeView::selectionChanged(QItemSelection const&, QItemSelection const&)+0xe1)[0x7efd3f04f5f1]
/lib/x86_64-linux-gnu/libQt5Core.so.5(+0x2e8f7c)[0x7efd3e0e8f7c]
/lib/x86_64-linux-gnu/libQt5Core.so.5(QItemSelectionModel::selectionChanged(QItemSelection const&, QItemSelection const&)+0x37)[0x7efd3e05bc47]
/lib/x86_64-linux-gnu/libQt5Core.so.5(QItemSelectionModel::select(QItemSelection const&, QFlags<QItemSelectionModel::SelectionFlag>)+0x216)[0x7efd3e064716]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(QTreeViewPrivate::select(QModelIndex const&, QModelIndex const&, QFlags<QItemSelectionModel::SelectionFlag>)+0x6a2)[0x7efd3f049112]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(QTreeView::setSelection(QRect const&, QFlags<QItemSelectionModel::SelectionFlag>)+0x17f)[0x7efd3f049a3f]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(QAbstractItemView::mousePressEvent(QMouseEvent*)+0x2f3)[0x7efd3efd50c3]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(QWidget::event(QEvent*)+0x1a8)[0x7efd3eda4db8]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(QFrame::event(QEvent*)+0x1e)[0x7efd3ee5048e]
/lib/x86_64-linux-gnu/libQt5Core.so.5(QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*)+0x8b)[0x7efd3e0b147b]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(QApplicationPrivate::notify_helper(QObject*, QEvent*)+0x6e)[0x7efd3ed62f9e]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(QApplication::notify(QObject*, QEvent*)+0x13c2)[0x7efd3ed6b552]

And this in QGIS:

Note that you have to click on one of the color classes.

But maybe it is a Qt(version?) hickup and not important?

These are my versions

QGIS version	3.35.0-Master	QGIS code revision	36c53ea14ce
Qt version	5.15.8
Python version	3.11.2
GDAL/OGR version	3.6.2
PROJ version	9.1.1
EPSG Registry database version	v10.076 (2022-08-31)
GEOS version	3.11.1-CAPI-1.17.1
SQLite version	3.40.1
PDAL version	2.5.6
PostgreSQL client version	15.3 (Debian 15.3-0+deb12u1)
SpatiaLite version	5.0.1
QWT version	6.1.4
QScintilla2 version	2.13.3
OS version	Debian GNU/Linux 12 (bookworm)