dbcoltype() , char and nchar

Hi,
there is in db-lib function dbcoltype, which returns result column datatype.
on CHAR column it returns SQLCHAR (SYBCHAR)
on VARCHAR it returns also SQLCHAR
on NCHAR, NVARCHAR it returns also SQLCHAR ... but here I need 
distinguish between CHAR and NCHAR (NATIONAL CHAR - UNICODE CHAR)
Is there any way how to get this more detailed column info (in example 
below is it wtype/wsize, column "nchar_field" is defined as nchar(10))?
If not, is there way how to extend (dbcolinfo?) and/or add some function 
or parameter which will solve this problem ?
(I am writing SQLConnector component for FreePascal project, which is 
going to use FreeTDS db-lib and I need this info to correctly create 
Fields in client DataSet)

freetds.log:
IF CLIENT CHARSET IS "ISO-8859-1":
...
token.c:1542:tds7_get_data_info:
    colname = nchar_field (11 bytes)
    type = 47 (char)
    server's type = 239 (x UCS-2 char)
    column_varint_size = 2
    column_size = 10 (20 on server)
token.c:1612: name                 size/wsize      type/wtype      utype 
token.c:1613: -------------------- --------------- --------------- -------
token.c:1623: nchar_field               10/20           47/239           0
...
IF CLIENT CHARSET IS "UTF-8":
...
token.c:1542:tds7_get_data_info:
    colname = nchar_field (11 bytes)
    type = 47 (char)
    server's type = 239 (x UCS-2 char)
    column_varint_size = 2
    column_size = 40 (20 on server)
token.c:1612: name                 size/wsize      type/wtype      utype 
token.c:1613: -------------------- --------------- --------------- -------
token.c:1623: nchar_field               40/20           47/239           0
...

Please let me know
Thanks
-Laco.

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