unicode - Alternative of ChrW function

Question

Is there any alternative function/solution of the ChrW() which accepts value not in range is -32768–65535 like for character code 􀂇 which leads to "??". Using ChrW() gives error

"Invalid procedure call or argument"

So I want an alternative solution to convert the charactercode to the actual character.

Code:

Function HTMLDecode(sText)
    Dim regEx
    Dim matches
    Dim match
    sText = Replace(sText, """, Chr(34))
    sText = Replace(sText, "<"  , Chr(60))
    sText = Replace(sText, ">"  , Chr(62))
    sText = Replace(sText, "&" , Chr(38))
    sText = Replace(sText, " ", Chr(32))

    Set regEx= New RegExp

    With regEx
     .Pattern = "&#(d+);" 'Match html unicode escapes
     .Global = True
    End With

    Set matches = regEx.Execute(sText)

    'Iterate over matches
    For Each match In matches
        'For each unicode match, replace the whole match, with the ChrW of the digits.
        sText = Replace(sText, match.Value, ChrW(match.SubMatches(0)))
    Next

    HTMLDecode = sText
End Function

Answer 1

' https://en.wikipedia.org/wiki/UTF-16#Description
function Utf16Encode(byval unicode_code_point)
    if (unicode_code_point >= 0 and unicode_code_point <= &hD7FF&) or (unicode_code_point >= &hE000& and unicode_code_point <= &hFFFF&) Then
        Utf16Encode = ChrW(unicode_code_point)
    else    
        unicode_code_point = unicode_code_point - &h10000&
        Utf16Encode = ChrW(&hD800 Or (unicode_code_point  &h400&)) & ChrW(&hDC00 Or (unicode_code_point And &h3FF&))
    end if
end function

For Each match In matches
    'For each unicode match, replace the whole match, with the ChrW of the digits.
    sText = Replace(sText, match.Value, Utf16Encode(CLng(match.SubMatches(0))))
Next