title: Touchpad's absolute touch coordinates
body: <p>Is it possible to read input directly from a Alps touchpad? I am trying to turn my touchpad into a cheap drawing tablet so I need to read the raw unprocessed x and y coordinates of where it was touched relative to the physical touchpad. So if I touch the bottom left corner of the  touchpad, it should correspond to (0,0) etc.</p>
  
  <p>I am trying to do this with Windows by the way.</p>
  
  <p>I can already do this with a Synaptics touchpad, but that's only because Synaptics has a nice SDK that gave me full control of the device. I couldn't find a similar thing for Alps. Is there anyway to do this using the windows api or directinput or whatever?</p>