>>>Returns question mark.
>>>Result should be Ü character, single byte 0xDC. Those 4 bytes per character are returned in WinHttpRequest.ResponseText. How to get 0xDC result ?
>>
>>Possibly the result you are getting is double width text, so you may need to do strconv() twice - first utf8 to double width, then that to 1257, I think the parameter is 2. I think I had cases when I had to do that (in my case, to 1250).
>
>Strconv() Parameter 2 does not accept code page. It requires locale id. Baltic locale id is not documented.
>
>Tried
>
>

>FOR i=1 TO 99999
>  cres='?'
>  ON ERROR note
>  cres = STRCONV( strconv(CHR(0xc3)+CHR(0x83)+ CHR(0xc2)+CHR(0x9c) ,11) ,2,i)
>  ON ERROR
>
>IF cres#'?'
>  ? i, cres
>  ENDIF
>
>ENDFOR
>

>
>This does not return any value.
>How to use your suggestion?

I've found that I've used STRCONV(STRCONV(lcText,11),2) without codepage, relying on it being set as the default (codepage for non-unicode apps in windows control panel).

In some cases, when I had to convert from 1250 to utf8, I had to do this:
lcTekst=Strconv(lcTekst,1)
lcTekst=Strconv(lcTekst,9,1250,1)
the last parameter means that the third parameter is a codepage, or else it may mean locale id. I never had much luck with locale ids.
I think all of 9,10,11 and 12 strconv()'s 2nd parameters take the third and fourth parameter the same way. So perhaps

STRCONV(STRCONV(lcText,11, 1257,1),2)

would be the ticket. Don't have a proper way to test it, but you do.