I have already solved this problem, in fact, just call the function to capture the image twice to solve the problem, because the first time only has the background image, the second time is the required image!!

Hi,

I can't answer to that directly.

Can you provide a minimal compilable example that shows that behaviour ?

I found a solution. Please see my stackoverflow post.

@m.sue That's good to know, thanks for the link!

With the techniques used in QOrbitCameraController you cannot yet handle wheel events. This will be implemented in Qt 5.8 AFAIK.

If you want to have something now you will have to implement it the old fashoined way i.e. override the virtual function void Qt3DWindow::wheelEvent(QWheelEvent *ev) and there change the field of view of the camera().

hi did u fix it ,i also encout this problem when delete or add a 3DObject to QT3DWindow.. it seems have no convnient api to do this