Drawing Tablet integration

Would be great to be able to use a drawing tablet (I have an older Wacom Intuos) which I often use with Wonderdraft or Dungeondraft, or just as a mouse, when my RSI is playing up… which after all the hours I'm putting in in DA uising the mouse (and for other things), it is now!
Using the pen and tablet works for selecting menu items and main sections of DA (Draw Room, object, lighting, menu) but won't let me say, select an object to place on map, or draw a room.