RtlUpperChar (was: some ntdll functions) [Virus checked]

"Dmitry Timoshkov"  wrote:
> > IMHO RtlUpperChar has nothing to do for unicode chars.
> > Is there a way to use Wine internal code page to do the conversion

without
> > converting to unicode and back?
>
> Wine has only unicode case conversion tables and currently there is no

way
> to avoid forth and back conversions.

My solution for this is:

/**************************************************************************
 *   RtlUpperChar   (NTDLL.@)
 */
CHAR WINAPI RtlUpperChar( CHAR ch )
{
    WCHAR wch;

wch = toupperW(((WCHAR) ch) & 0xff);
    if (wch >> 8) {
        return ch;
    } else {
        return (CHAR) wch;
    }
}

This would mean: Some ISO Latin 1 characters would be converted
additionally
to 'a' .. 'z'.

I did a test on w2k trying to convert all chars between 0 and 255.
The result was:

Just 'a' .. 'z' are converted to 'A' .. 'Z', all other characters remain
unchanged.

I switched the machine between 'EN' (English) and 'DE' (German) and no
difference.
May be this was the wrong place to switch the locale / code pages ...
My guess is:

RtlUpperChar does not take the locale into account. It always convertes
just
'a' .. 'z' and nothing else.

Is this the right direction or did I miss something?

Greetings
Thomas