Emulating keyboard doesn't work

[Dremaro]

Hey,
I tried to use this adafruit libraries to simulate a keyboard with simple buttons. I don't want to use it for what it was originally made (retrogames etc). For instance, I just need the button to write an "a" on a text editor if I press a button. Is this supposed to work with this adafruit librarie or is it specifically made for retrogames ?

The button I made doesn't make anything to the computer... though it tried the button with raspi-gpio get commands and the button works fine. The problem must be somewhere else.

I'm using raspberry pi 3, with 1 button for now. I have followed step by step the tutorials without errors I assume...

Thanks for your answers guys