Detecting CAPSLOCK/NUMLOCK led status with Leonardo/ProMicro

[jumpjack]

In this thread there is the needed source to add this feature to HID.cpp and keyboard.cpp, but I don't know how to implement it:
https://forum.arduino.cc/index.php?topic=173583.new#new

[NicoHood]

See https://github.com/NicoHood/HID

https://github.com/NicoHood/HID/blob/master/examples/Keyboard/KeyboardLed/KeyboardLed.ino

[jumpjack]

Can it also read other keys than xxxLock?

[NicoHood]

I think numlock also works. The first 3 leds should work, but i dont remember. Please look at the source.