QUiLoader and ignored dynamic properties - qt

Question

I'm loading the .ui file, where one of the widgets (QComboBox) has a dynamic property (http://qt-project.org/doc/qt-5/properties.html#dynamic-properties). The UI file looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>PopulateScriptConfig</class>
<widget class="QWidget" name="PopulateScriptConfig">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>300</height>
</rect>
</property>
<property name="windowTitle">
<string>Form</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<widget class="QGroupBox" name="langGroup">
<property name="title">
<string>Language</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout_3">
<item>
<widget class="QComboBox" name="langCombo">
<property name="ScriptingLangCombo" stdset="0">
<bool>true</bool>
</property>
</widget>
</item>
</layout>
</widget>
</item>
<item>
<widget class="QGroupBox" name="codeGroup">
<property name="title">
<string>Implementation</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout_2">
<item>
<widget class="QPlainTextEdit" name="codeEdit"/>
</item>
</layout>
</widget>
</item>
</layout>
</widget>
<resources/>
<connections/>
</ui>
The important part is:
<widget class="QComboBox" name="langCombo">
<property name="ScriptingLangCombo" stdset="0">
<bool>true</bool>
</property>
</widget>
I'm loading the file with QUiLoader::load(). I have extended the QUiLoader class, but only to access createWidget() method, where I can query each widget like this:
QWidget* UiLoader::createWidget(const QString& className, QWidget* parent, const QString& name)
{
QWidget* w = QUiLoader::createWidget(className, parent, name);
qDebug() << w->dynamicPropertyNames();
return w;
}
As a result I see empty list displayed, so it seems like the dynamic property is completly ignored.
Note, that UI editor in QtCreator recognizes this dynamic property correclty.
This question was already asked/reported 2 times before, but no solution was provided:
https://bugreports.qt-project.org/browse/QTBUG-11791?page=com.atlassian.streams.streams-jira-plugin:activity-stream-issue-tab
http://www.qtcentre.org/threads/32013-QUiLoader-Problem-No-Dynamic-Properties-Support
Any ideas?
P.S. I've made sure that I load correct file. 3 times.

Answer 1

It turned out it was my mistake and Qt is working correctly. Rookie mistake.
The problem is that I tried to access dynamic properties in overriden method of QUiLoader::createWidget(), but this is invoked for each subwidget and dynamic properties are set after all widgets were created. Dynamic properties are not yet available at the moment of createWidget() call.
The very simple project I did for testing this (I mentioned it in the comment) was also working correctly, I just made a mistake while printing debug information (I was printing it from wrong widget). That's all.
QUiLoader works just fine with dynamic properties after all.