UPDATE: This is no longer the latest version, I fixed some bugs for Mac users and reposted. To get the latest version click here.
Since I don’t have a touchscreen to test this with, I’m releasing the 01 version with mouse functionality, along with a few GUI functions to change the midi out port and the starting note number. At some point I’ll get a tablet and add the touchscreen functionality, or if someone has a tablet I can pass the source code on and they can test/implement that functionality.