TypeError on closing window

mottress

Hi All,

Testing on windows [MSVC 19] with Qt 5.15.

I've made a simple application to explain the problem: https://github.com/motters/QtSetContextProperty open the project in QtCreator and run.

Essentially I'm using "setContextProperty" to map across a C++ object to QML. See Test class here.

Test vars;
vars.count(1);
engine.rootContext()->setContextProperty("Test", &vars);

I'm referencing the object in QLM as such

Window {
    id: window
    visible: true
    width: 640
    height: 480
    title: Test.count
...

This works perfectly fine on application boot & run, the data is mapped across as expected. However, when i close the application I get the following error:

qrc:/main.qml:10: TypeError: Cannot read property 'count' of null

Is there something I'm missing here? It's like QML is trying to access the Test object after it was deleted on exit.

Thanks,

Sam

mottress

I can confirm this is a lifetime issues. Moving "Test vars;" outside of main solves the issues.

Does this mean QML engine is closing after the application thread?