> (using D7e and FB1.0.3.972)
> Hi
>
> Can you direct me to the place to find information on UDFs and this
> version of FB? My problem is that some UDF's that worked with IB
> 6.0.2 don't work any more. My udf library is written in Delphi and is
> originally based on FreeUDF.
>
> For example f_LRtrim does not work. I know that the function is coded
> into the dll because I code and compile the dll myself. The external
> function is present in the database after having been declared. It's
> is there amongst all the others, and bear in mind that some of the
> other functions do work, even returning strings, so it is should not
> be a parameter passing issue. So what is the problem?
>
> this works: select f_Ltrim(lastname) from contacts
> this does not work: select f_LRtrim(lastname) from contacts
>
> this is the error message:
> Error at line1 - invalid request BLR at offset 63
> function F_LRTRIM is not defined
> module name or entrypoint could not be found
>
> Can you can help or send me to the place where I can read up about
> this please.
>
> Regards Q

I'd suggest looking again at your definition again. The error message is not
suggesting that it's failing at the execution, but that it's not being found
at the definition point.
Alan
(read it again closely
DECLARE EXTERNAL FUNCTION F_LRTRIM
CSTRING(254)
RETURNS CSTRING(254) FREE_IT
ENTRY_POINT 'lrTrim' MODULE_NAME 'FreeUDFLib.dll'