GL graphics system

[in_dbasu]

I have integrated a QtQuick 3D code (CAR 3D) to be called from qt code. But when it is run, only half the items are on the screen and this is the error I get
" GL graphics system is not active; cannot use 3D items"

How can it be solved?

[d_stranz]

Maybe you're missing a call to QGLWidget::glInit() somewhere?