Joined an organization a couple years ago – client server application. Client is VB6 to IBM interspace to CICS client to CICS on a windows sever running COBOL server applications and Oracle DB. They hired us to support the application written by a consulting service. Problem is the Interspace S/W hides some of it’s stuff so it is not real clear what is being passed between the client and so the COBOL people will say they sent something and the VB will say no or visa versa.

I am COBOL but have played with VB a little so know enough to be dangerous so this may be obvious to most of you. I want to write a VB DLL that will trap, intercept, wrapper, whatever you want to call it, between the IBM interspace and IBM client S/W. Both probably C++. This would allow be to display or write out precisely what is being sent and returned. Perhaps allow the user to edit, resend, etc – but I’ll deal with that later.

I have identified the interspace component that calls the client and the client dll being called – first with Editpad then with the Pedump program I got from Microsoft. I need to 1) figure the parameters passed to the Client API then 2) understand how to write a VB Dll that is called by the interspace C++ dll and will then call the client C++ dll. I changed the name of the external name in the interspace DLL but it would not load I am guessing because the Client pieces were missing. I tried to add a define function to call the client DLL but I could not get it defined as an import.

Any help appreciated.

Thanks,
Clark