CPI-C Calls in C Programs

This implementation of CPI-C is available to programs written in Microsoft® C version 5.1 or later.

The WINCPIC.H header file defines the prototypes for each CPI-C function. Other definitions include:

• Types specifically defined for use by CPI-C parameters.
• The structure of the side information entries.
• Symbolic names defined for integer parameters.

To use CPI-C calls, the C program must include WINCPIC.H and declare the variables to be used in passing parameters on CPI-C calls. Note that you must define WINDOWS, WIN32 or DOS5 before including WINCPIC.H. For example:

Windows 3.x clients:
        #define WINDOWS
        #include <wincpic.h>

OS/2 clients:
        #define DOS5
        #include <wincpic.h>

Windows NT and Windows 95 clients:
        #define WIN32
        #include <wincpic.h>
 

In the case of strings, the program must also determine the desired string length.