Re: How to know if a key is pressed without getting it?

[Vinicius Jose Latorre <viniciusjl@ig.com.br>]

>> Does anyone know how to know if a key is pressed without getting it in
>> Emacs (like kbhit like function)?
>>      
> input-pending-p is a built-in function in `C source code'.
>
> (input-pending-p)
>
> Return t if command input is currently available with no wait.
> Actually, the value is nil only if we can be sure that no input is available;
> if there is a doubt, the value is t.
>    

Well, Óscar Fuentes also sent me an email about input-pending-p.

I defined the following function using input-pending-p:

(defun test-input ()
   (read-char "char: ")
   (while (input-pending-p)
     (insert (format "{%S}" unread-command-events)))
   (message "{%S} END" last-input-char))

Execute the function above via: M-: (test-input) RET

Then hold space key.

The only message returned is "{32} END" followed by all spaces that I 
pressed (except the first one).

So, input-pending-p does not work as kbhit function.

I'm thinking that this function is not implemented in Emacs.