[SDL] Some keys cancel each other with 1.2.10(notthetypicalkeyboard bug)

[James Haley]

Ah, I see. So the difference is primarily coming from the difference in 
drivers being used.

Whatever happens, I hope that the shift/alt + arrows issue doesn't return, 
because it
makes it a wee bit difficult to run or strafe in a first person shooter game 
when this
combination of keys cannot be used ^_^

James Haley

>From: "Alex Volkov" <avcp-sdlmail at usa.net>
>Reply-To: "A list for developers using the SDL library. 
>(includesSDL-announce)" <sdl at libsdl.org>
>To: "'A list for developers using the SDL library. 
>(includesSDL-announce)'"<sdl at libsdl.org>
>Subject: Re: [SDL] Some keys cancel each other with 
>1.2.10(notthetypicalkeyboard bug)
>Date: Fri, 2 Jun 2006 11:53:51 -0400
>
>James Haley wrote:
>
> > It appears that modifiers + arrow keys are fixed under 1.2.10, as you
> > say pressing shift now works, and for me, pressing alt now works.
> > However, for the other keys, like alphanumerics, it is not fixed.
>
>I am not so sure it is "fixed", but see below.
>
>Martin Lange wrote:
> > But then came SDL 1.2.10 and the problem disappeared. I have just
> > (like in "now") tested it both with SDL 1.2.9 and 1.2.10 So I can't
> > see it any other way, than this is a SDL-thing.
>
>Could be the same "fixed" issue, but see below.
>
> > So, the question is, what is the difference in how SDL is handling
> > modifier keys from how it is handling other keys, and what between
> > 1.2.9 and 1.2.10 was changed to make this difference?
>
>The biggest difference is that SDL 1.2.10 ships with Windib driver being
>default, while 1.2.9 had DirectX as default. Unfortunately, it appears that
>Windib keyboard handling did not receive enough testing originally 
>(probably
>because everyone was using DirectX so far), so it still has some quirks in
>1.2.10. A number of Windib keyboard things have been fixed in SVN since
>1.2.10 release (see http://bugzilla.libsdl.org/show_bug.cgi?id=164).
>The handling of keyboard events in Windib and DirectX drivers is very
>different: DirectX uses scancodes only, and Windib uses Windows virtual
>keys.
>
>Note that on my Win2k system, both drivers in both SDL versions are working
>fine with shift + arrow keys and J + arrow keys.
>
>If you really want to test what got fixed and what got broken, you should
>force the driver with SDL_VIDEODRIVER envvar:
>C> set SDL_VIDEODRIVER=directx    (or windib)
>C> my_app.exe
>
>-Alex.
>
>
>
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