Hello

I work for now on small lathe that I have installed tablet touch PC with smooth Stepper, this machine do not have hardware keyboard , only 4 push button for jogging and selector for select rapid, feed or step
for this that work very good...
My problem is for input the number in DRO readout and the Gcode in MDI lines... my tablet pc work on windows 7, I use for now the windows7 virtual keyboard. when I want setup DRO I need to open keyboard before, touch the DRO, and try to input the number on a very small button in small screen...
I will like to create my own keyboard with only the 10 number and important letter (XYZAGMFSIJK). create keyboard was easy, but How Can I create or read an event when I push DRO readout ? when I touch DRO readout, my keyboard need to turn on...
Do you know if mach3 can call external program or macro when I touch a DRO or MDI line


tanks
Fred
Repmo inc