Re: [AD] key scan codes have changed?

[AJ <aj@xxxxxxxxxx>]

now holding the ALT key produces a readkey() event.
im not sure that is right.

but the alt A-z and  A-z  are different.. yeah!




Elias Pschernig wrote:
> Hm, posting this from windows with gmail.. and of course, my reply I
> sent this morning isn't here (which is really odd, since the archiv on
> SF has it..)
>
> Anyway, the attached patch should make Alt+key always return 0 as
> ascii code for readkey().
>
>
> ------------------------------------------------------------------------
>
> Index: src/win/wkeybd.c
> ===================================================================
> RCS file: /cvsroot/alleg/allegro/src/win/wkeybd.c,v
> retrieving revision 1.32
> diff -u -p -r1.32 wkeybd.c
> --- src/win/wkeybd.c	8 Apr 2005 16:08:04 -0000	1.32
> +++ src/win/wkeybd.c	25 Apr 2005 13:33:50 -0000
> @@ -256,23 +256,29 @@ static void handle_key_press(unsigned ch
>           vkey = VK_RETURN;
>     }
>  
> -   /* TODO: is there an advantage using this? maybe it would allow chinese and so on
> -    * characters? For now, always ToAscii is used. */
> -   //n = ToUnicode(vkey, scancode, keystate, chars, 16, 0);
> -   n = ToAscii(vkey, scancode, keystate, (WORD *)chars, 0);
> -   if (n == 1)
> -   {
> -      WCHAR wstr[2];
> -      MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, (LPCSTR)chars, n, wstr, 2);
> -      unicode = wstr[0];
> +   /* When alt key is pressed, any key always must return ASCII 0 in Allegro. */
> +   if (keystate[VK_LMENU] & 0x80) {
> +      unicode = 0;
>     }
> -   else
> -   {
> -      /* Don't generate key presses for modifier keys. */
> -      if (mycode >= KEY_MODIFIERS || n != 0)
> -         unicode = -1;
> +   else {
> +      /* TODO: is there an advantage using ToUnicode? maybe it would allow
> +       * Chinese and so on characters? For now, always ToAscii is used. */
> +      //n = ToUnicode(vkey, scancode, keystate, chars, 16, 0);
> +      n = ToAscii(vkey, scancode, keystate, (WORD *)chars, 0);
> +      if (n == 1)
> +      {
> +	 WCHAR wstr[2];
> +	 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, (LPCSTR)chars, n, wstr, 2);
> +	 unicode = wstr[0];
> +      }
>        else
> -         unicode = 0;
> +      {
> +	 /* Don't generate key presses for modifier keys or dead keys */
> +	 if (mycode >= KEY_MODIFIERS || n != 0)
> +	    unicode = -1;
> +	 else
> +	    unicode = 0;
> +      }
>     }
>  
>     _handle_key_press(unicode, mycode);