Hi Stuart,
Most of the buttons have the action string "e, null" which need to be assigned commands. WIP.
I don't think it matters that you are doing it in the dgnlib or not.
Screen menus are big improvement on the old digitiser menus. It would be good to have some 'finished.' -with some hierarchial menus- templates delivered with Mstn, which the user can adapt, and not have to start from scratch. More documentation and examples will of course also be welcome.
Should be interesting to combine with the new gestures stuff.... :-)