Also, for the mouse emulation, how about keep checking forever whether mouse is down, and fire only mouse-up and mouse-down events (so no constant firing probably), however that would be done, because i'd guess broadcast messages won't work on a pen-based OS but could be wrong.
Otherwise maybe you can just dedicate some keys to mouse movement (possibly arrow keys), and one key for click.
Also, for the mouse emulation, how about keep checking forever whether mouse is down, and fire only mouse-up and mouse-down events (so no constant firing probably), however that would be done, because i'd guess broadcast messages won't work on a pen-based OS but could be wrong.
Otherwise maybe you can just dedicate some keys to mouse movement (possibly arrow keys), and one key for click.