Unicode函数

一、计算unicode字符串的Ansi编码的长度

Function strUnicodeLen(asContents)

    asContents1="a" & asContents

    len1=len(asContents1)

    k=0

    for i=1 to len1

        asc1=asc(mid(asContents1,i,1))

        if asc1<0 then asc1=65536+asc1

        if asc1>255 then

            k=k+2

        else

            k=k+1

        end if

    next

    strUnicodeLen=k-1

End Function

二、将Unicode编码的字符串转换为Ansi编码的字符串

Function strUnicode2Ansi(asContents)

    strUnicode2Ansi:='';

    len1=len(asContents)

    For i=1 to len1

        varchar=Mid(asContents1,i,1) 

        varasc=Asc(varchar)  

        If varasc<0 then varasc=varasc+65536

        If varasc>255 then

            varHex=Hex(varasc)

            varlow=left(varHex,2)

            varHigh=Right(varHex,2)

            strUnicode2Ansi=strUnicode2Ansi & chrB("&H" & varlow) & chrB("&H" & varhigh)

        Else

            strUnicode2Ansi=strUnicode2Ansi & chrB(varasc)        

        End If

    Next

End Function

三、将Ansi编码的字符串转换为unicode编码的字符串

Function strAnsi2Unicode(asContents)

    strAnsi2Unicode=""

    If IsNull(asContents) or asContents="" then

        Exit Function

    For i=1 to len1

        varchar=MidB(asContents1,i,1) 

        varasc=AscB(varchar)  

        If varasc>127 then

            If MidB(asContens,i+1,1)<>"" then

                strAnsi2Unicode=strAnsi2Unicode& chr(AscW(MidB(asContents,i+1,1) & varchar))

            End If

            i=i+1

        Else

            strAnsi2Unicode=strAnsi2Unicode& chr(varasc)  

        End If      

     Next

End Function