Where are declared and how to make build these c identifiers?

[Adam D. Ruppe]

On Sunday, 24 February 2019 at 12:37:21 UTC, Cleverson Casarin 
Uliana wrote:
> OK, it built the executable, but it doesn't work for every key, 
> e.g. when I try with arrow and function keys, it always returns 
> the same symbol, so I'm unable to distinguish what key has been 
> pressed:

Those don't have printable characters associated, so they all 
look the same. Try writeln(cast(int) code)  - casting it to int 
so you can see the number - and you should see the different 
results.

Or even

  terminal.writeln("You pressed ", cast(KeyboardEvent.Key) ch);

might be a better demo, i should change the docs, since that will 
print the name of most keys!

supported key list: 
http://dpldocs.info/experimental-docs/arsd.terminal.KeyboardEvent.Key.html

(lowest common denominator between windows and linux)