SAP VEV SDK: Way to trigger an event when the user drags or zooms

Hello,

I have been looking at the SAP SDK for Visual Enterprise. I have seen mouse events (but they don't seem to have a drag one) and model view events but neither of them seem to trigger when the user changes the view. I would like to be able to tell if the user has zoomed or rotated the 3D image. Are there any tips to make that happen?