To help COBOL and C programmers, we provide a COBOL copybook (cbltypes.cpy) and a C header file (svext.h) with COBOL Server. These files contain definitions of the structures and interfaces that you will require to write user exits and custom request handlers.
One of these is the IDP_EXIT_INFO structure, which is used for passing the information required by the exit routines for processing at each exit point. A pointer to this structure, together with the exit point identifier, is passed to each exit routine. The information passed and returned depends on the exit point.
For definitions of the information passed at each exit point see the reference Help topics Exit Points.
For definitions of support functions see the reference Help topics Functions.