Move images in perl tkx

Dear All,
I'm developing an interface for a project where we should move cars
(that are images) from one point in the layout to another point. This
means that, using the mouse, we should be able to move it. To develop
this layout we have used the perl module tkx. Do you know the way to
move them using it? is there some example around that we can take a
look?

Thanks a lot
Antonio