Problem embedding Qt3DWIndow using createWindowContainer in a MainWindow

  • Hi Everybody,
    I would like to use Qt3D in one of my projects but I am a bit stuck with stability problems.
    The compiler I am using is MSVC2015 64 bit and I have tried Qt 5.8.0 and 5.9.0 beta and I have different errors when compiling a simple application in which I have embedded a 3D widget using this code in the MainWIndow constructor generated by QtCreator for an application managed by QtDesigner:

        window3d=new Qt3DExtras::Qt3DWindow();

    I have added no additional code.
    The application crashes randomly mostly when closing it and without any message in Qt 5.8.0 and ,I have the compile-time error "QOpenGLContext::swapBuffers() called with non-exposed window, behavior is undefined" with Qt 5.9.0 beta.

    This happens both in debug an release mode.

    Any hint on how to "stabilize" my application or of what am I doing wrong?

    Thanks in advance for your help,


  • It's not a compile-time error, it's a runtime error, and it happens only once at the very first draw of the window.

    It goes away if you call Qt3DWindow::show() right after window creation.

  • Thanks a lot...of course you are right... It is a runtime error not a compile error... Thanks for the workaround...
    I will test it asap...

Log in to reply

Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.