WinHttpRequest is used to import bank statement from Nordiget.com containing characters from Windows-1257 code page. For unknown reason, FoxPro does replaces accented chartacters with ? signs. To fix this, COMPROP(WinHttpReq ,"UTF8",1) is added:

      WinHttpReq = CREATEOBJECT("WinHttp.WinHttpRequest.5.1")
      WinHttpReq.Open("GET", "https://ob.nordigen.com/api/v2/accounts/11111-22222-333333-4444-/transactions/", .f.)
      WinHttpReq.setrequestheader('accept', 'application/json')
      WinHttpReq.setrequestheader('Authorization', "Bearer afde554a5sd45a45as4")
      WinHttpReq.Send()
      * If this is removed, acented characters appear as single ? signs:
      COMPROP(WinHttpReq ,"UTF8",1)

Response WinHttpReq.ResponseText contains accented characters represented by 4 bytes. First 3 are same but fourth is different. Those characters are converted by code using

    Function NordigetConvert(cStr)
    cstr = strt( cStr, CHR(0xc3)+CHR(0x83)+ CHR(0xc2)+CHR(0x9c) , 'Ü' ) 
    cstr = strt( cStr, CHR(0xc3)+CHR(0x83)+ CHR(0xc2)+CHR(0xBC) , 'ü' ) 
    cstr = strt( cStr, CHR(0xc3)+CHR(0x83)+ CHR(0xc2)+CHR(0x84) , 'Ä' ) 
    cstr = strt( cStr, CHR(0xc3)+CHR(0x83)+ CHR(0xc2)+CHR(0xB6) , 'ö' ) 
    return cStr

This converts only ÜüÄö. There are much more characters to convert.
How to force FoxPro to perform this conversion automatically?
Or can some FoxPro strconv() or other function or WinAPI call used to preform this conversion?

Posted also in https://stackoverflow.com/questions/75396853/how-to-import-unicode-data-from-winhttpreq