app crashes when a qquickwidget is set into QGraphicsScene

[JoeCFD]

A quickwidget is created with a qml file. For testing purpose, it has only a rectangle with an image. It is wrapped in a QWidget streamwidget with some settings for it. This streamwidget can be displayed in a layout of widgets without any problem. But the app crashes when the quickwidget is added to a QGraphicsScene
QGraphicsScene->setWidget( streamwidget ); ==> crash
Does anyone have the same problem? I will try a small test later.

Qt: 5.15.2 and Ubuntu 18.04

[SGaist]

@JoeCFD no, not wrapping anything, setting the viewport. See the QGraphicsView details.

[SGaist]

Hi,

Do you have the same issue if you use an OpenGL viewport for your view ?

[JoeCFD]

@SGaist Thanks for your reply. I will try to wrap it in a OpenGL widget and add it to view port of QGraphicsView. Is this what you suggest?

I have a QGraphicsScene which has a bunch of items and it is set in QGraphicsView. Before, it was a graphics widget and no problem to add it to the scene. Now I replace it with qquickwidget and it can not be added to the scene anymore.

[SGaist]

@JoeCFD no, not wrapping anything, setting the viewport. See the QGraphicsView details.

[JoeCFD]

@SGaist Actually I set an empty OpenGLWidget in the viewport. I will try to set the quickwidget there and see what will happen. Will let you know.

[JoeCFD]

@SGaist I set the wrapper widget to the viewport and it works. Thanks a lot.