判断文章中文字符数量

dim WINNT_CHINESE
WINNT_CHINESE = (len("论坛")=2)

function strLength(str)
ON ERROR RESUME NEXT
if WINNT_CHINESE then
dim l,t,c
dim i
l=len(str)
t=l
for i=1 to l
c=asc(mid(str,i,1))
if c<0 then c=c+65536 if c>255 then
t=t+1
end if
next
strLength=t
else
strLength=len(str)
end if
if err.number<>0 then err.clear
end function