Re: [AD] Problems with ureadkey() under X

[salvador <salvador@xxxxxxxxxx>]

Hi Michael:

Now I investigated it better:

> I think no.  Some games need all keys to be accessible, so Allegro
> tries to get all key presses and releases and usually do all necessary
> translations itself.

Can it be optional?

> I think it is possible to instruct Allegro to
> combine some keys into accented character (have not tried it though).

But this will solve my particular problem, but my program (made with Allegro)
won't work in other systems.

> BTW, what does your program return when you try to enter accented
> character?  Does it return both keys you type, or only one key, or
> something else?

Now I adde some printf to xwin.c and here is what I found:

1) When I press ' Allegro gets a key event  message with code == 0x30 (no idea
what exactly means)
2) When I release it Allegro correctly gets the release event.
3) Until here Allegro doesn't report any key to ureadkey() (same for ureadkey()).

4) Now I press the a key.
5) Allegro gets an event with code 0x26.
6) Allegro reports unicode: 0x61, scan 0x01
7) I release the key and Allegro gets the release event.

As Allegro didn't report the first keypress I added this code to xwin.c:

 len = XLookupString(&event->xkey, kbuf, sizeof(kbuf), &keysym, NULL);

And printed the keysym, it is 0xFE51, and that's "dead acute accent"
So in fact Allegro is decomposing the keystrokes, I see Allegro gets "this is an
acute accent, wait for the key" and then "a". But:

1) It harms my keyboard layout.
2) It doesn't help Allegro to recover the ' accent key.

In fact I can't:

1) Get accents.
2) Get the ' key (simple quote)!

It makes Allegro useless. My keyboard is using only single quotes (really needed
for C coding), but it could be even worst, most spanish layouts to use an
US keyboard for latin-1 also uses double quote, circumflex symbol, tilde and
reverse single quote. It means all these keys fails to work as the user spect
*and* aren't reported at all.
I know nothing about X and I know you know about it. Do you know if I can try to
fix it trying something?

SET

P.S. I'll investigate some more details.

--
Salvador Eduardo Tropea (SET). (Electronics Engineer)
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