Hi all, Could someone explain QObject ownershiping aspects, please.
According to http://doc-snapshots.qt.io/qt5-dev/qtqml-cppintegration-data.html when data is transferred from C++ to QML, the ownership of the data always remains with C++. The exception to this rule is when a QObject is returned from an explicit C++ method call. And it works for c++ functions that return "single" QObject*. But what to do with QObjectList-based models ( https://doc-snapshots.qt.io/qt5-5.9/qtquick-modelviewsdata-cppmodels.html)? Let say in c++ application creates list of new objects: Q_INVOKABLE QList<QObject *> workers(); and qml set this as the model for ListView or Combobox. But these objects will never be destroyed. How to force qml own this objects properly? I did try QQmlEngine::setObjectOwnership(list[i], QQmlEngine::JavaScriptOwnership) in loop before returning list, but qml can destroy them immediately despite that Combobox is still displayed. -- With regards, Oleg.
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