Another Quicky 

https://youtu.be/8KgZ1SYxEdg

0 = Disable
1 = Enable

local Handle = mc.mcIoGetHandle (inst, "Keyboard/Enable")

if Handle ~= nil then
    mc.mcIoSetState(Handle,0)
end

Awesome. Thanks again for your work.
Troy

Did you find a way to deactivate keyboard when Mach4 lost focus to?
Keyboard jogging outside Mach4 program is a bit scary 

Could mcGuiSetFocus be used? in that case, how?   I looked around for something like WindowLostFocus() but didnt find anything.
I am a bit supprised that Mach didnt fix this as it can be a bit dangerous...