I confirmed that. In exkeys, when i pressed the ALT GR key, the Left
control got a keypress too. This could stuck the Esc key too.
I'm in Windows 2000 with a ABNT2 brazilian keyboard.
Victor Williams Stafusa da Silva
--- Andrei Ellman <ae-a-alleg@xxxxxxxxxx> escreveu:
aj wrote:
> can these problems be demonstrated/or not in the
/examples/exkeys.exe ?
I just tried exkeys.exe (only under Windows 2000) and at first, the
problem does not appear. However, on closer inspection of the code,
the
bit where it tests the key_shifts variable is immediately preceded by
a
ureadkey(NULL); I tried adding readkey(NULL) to my example program,
and although it now stops and waits for a regular key (letter,
number,
etc) to be pressed before reading key_shifts, when I press a regular
key, the key_shifts variable is updated with the correct state of the
shift-keys. From this, I conclude that the windows version only
updates
key_shifts when a regular key is pressed, but the DOS version keeps
key_shifts in sync with the state of the keyboard. If exkeys.exe had
a
portion where it just displayed the key_shifts variable without
waiting
for readkey(), then the problem will be demonstrated.
A manifestation of the problem where ESC does not work when the
CTRL/ALT keys are 'stuck' in exkeys.exe is where I cannot press ESC
to
continue unless I press some other key first.
Also, in exkeys, when I press ALT-GR, in the table of keys on the
right
of the screen, it says I've pressed both ALT-GR and CTRL when I've
not
pressed CTRL. If CTRL is held down, the values for both ALT-GR and
CTRL
are correct. However, if I hold down RCONTROL when I'm holding down
ALT-GR, then the indicator for CTRL becomes un-set, although if I'm
holding down all 3 keys at once, the indicators are at their correct
values. None of this happens with the regular ALT key.
I have a UK keyboard. According to the Windows Input-locales section
of
the regional options applet, the input-language is "English (United
Kingdom)", and the Keyboard layout / IME is "United Kingdom".
BTW. I added the following lines inside the main loop of my test
program
if(keyboard_needs_poll())
{
poll_keyboard();
}
and the results are still the same - even if I get rid of the if and
just call poll_keyboard()
AE.
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