how to structure a DLL so that Forms can call it?

Can someone tell me exactly how to create a DLL file containing a C++ function that will be called from a Forms program unit? I know we need to use the ORA_FFI package, and we have written the code to call the function, but we have apparently not done something right in creating the DLL. The error we get is that the function cannot be found.

We are using Forms 4.5 (32-bit) and MSVC++ 4.0. Received on Fri Jan 24 1997 - 00:00:00 CET