OpenTP1 Version 7 Programming Guide

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3.9 User exit routines

User exit routines are programs which help UAPs with message processing when OpenTP1 is in process of message exchange mode communication.

Either C or C++ is used for coding user exit routines. When the C is used, code the user exit routine in either the ANSI C format or the pre-ANSI K&R format (Classic C). When the C++ is used, code the user exit routine according to the C++ specification.

The figure below shows the relationship between message processing and user exit routines.

Figure 3-20 Positions of user exit routines

[Figure]

Organization of this section
3.9.1 User exit routine that edits input message and application name determination
3.9.2 User exit routine that determines the inheriting timer-start message
3.9.3 User exit routine that edits sequential number of send message
3.9.4 User exit routine that edits output message