Ambarsih, > // add.cpp : Defines the entry point for the DLL application. are you sure that you using the C-Compiler and not the c++ compiler? As much as I know about defaults, that will be a C++ compiled function, which is something totally different then a C compiled function. (and, to my knowledge, a C++ function is not easily callable by PostgreSQL) Harald -- GHUM Harald Massa persuadere et programmare Harald Armin Massa Spielberger Straße 49 70435 Stuttgart 0173/9409607 no fx, no carrier pigeon - %s is too gigantic of an industry to bend to the whims of reality -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general