About The CPI-C Guide

The Microsoft SNA Server CPI-C Programmer's Guide provides information required to develop C-language applications that use the Common Programming Interface for Communications (CPI-C) to exchange data in a Systems Network Architecture (SNA) environment.

This guide is intended for the programmer writing applications that use CPI-C to exchange data. It provides conceptual information and detailed reference information.

To use this guide effectively, you should be familiar with:

• Microsoft® SNA Server.
• One of the following operating environments:
  • Microsoft® Windows NT®
  • Microsoft® Windows® 95
  • Microsoft Windows graphical environment version 3.0 or later
  • IBM OS/2 version 1.2 or later
• SNA concepts.

This guide covers the following topics:

Introduction to CPI-C

Introduces the fundamental concepts of CPI-C.

Writing CPI-C Applications

Contains general information about writing CPI-C applications.

CPI-C Calls

Describes each CPI-C call in detail.

Extensions for the Windows Environment

Describes extensions to Windows CPI-C.

Common Return Codes

Lists all of the return codes in integer order.

Sample CPI-C TPs in the SDK

Describes the CPI-C transaction program samples in the SNA Server SDK.