need to call repaint during animation

[TheClassic]

Something I’m doing with an animation (QPropertyAnimation) causes an artifact that can be resolved by calling repaint for the region. However a) I don’t know when the animation is complete and b) I’d like to call repaint for each step of the animation. Can anybody point me in the right direction as far as what I need to be able to do in order to be able to call repaint during an animation? Thanks