Is it possible to programmatically flash the lights on the keyboard?

Question

Programming

Caps, scroll and num lock, but without switching the state of the keys themselves.
Once upon a time, I definitely had a plugin for QIP that allowed me to do this. Naturally, neither his name nor the plugin itself has been preserved. Needless to say, it was already on windows xp, and it is quite possible that by the tenth this opportunity was cut out. Actually, does anyone know how? If there is an example in C ++, it will be generally gorgeous.

Answer 1

Software switching is definitely possible. The built-in on-screen keyboard in win10 can do this

Answer 2

maybe
I won’t give an example in C, I don’t have it,
but if it’s implementable under Bash, then it means writing in C too - just spit,
man xset

Answer 3

Maybe. We had a laboratory in Assembler at the university - just blink a light on the keyboard )

Answer 4

Your problem is that there are NO LIGHTS on the keyboard!!! Of course, due to the lack of blinking, they will not work. But flash the LED indicators as much as you want