No way to use mouse-functions using graphics tablet

[0ion9]

I got the impression from the preferences dialog that I could, for example, adjust zoom by holding RMB and LMB-dragging, or adjust rotation by holding RMB+Alt and LMB-dragging. AFAICS though there is actually no way at all to access these without a scroll wheel.

It would be nice if this were an option, as otherwise it's impossible to access the mouse-functions with tablets whose stylus has no scroll wheel (ie. most of them)