Add 3D model to QtCreator GUI and move one part

[ale.fdezsuarez]

Hi. I was wondering if anyone knows how I could perform the following task.

I have a 3D model (.step format) that presents mainly two parts, a structure, painted blue, and a moving part, painted orange as I show below.

What I need to do is that by means of some kind of element that is presented in the graphical interface (C++ GUI) I can move that orange element, for example with a horizontal slider or something like this. Any ideas or advice on how I can do this?

Thanks!