如何测试字符串的长度?
Function CheckStringLength(txt)
txt=trim(txt)
x = len(txt)
y = 0
for ii = 1 to x
if asc(mid(txt,ii,1)) < 0 or asc(mid(txt,ii,1)) >255 then
' 如果是中文.
y = y + 2
else
y = y + 1
end if
next
CheckStringLength = y
End Function