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Annotation of mstools/samples/nwlink/testlib/geterror.c, revision 1.1.1.1

1.1       root        1: /****************************************************************************\
                      2: *  geterror.c -- sample program demonstrating NWLink.
                      3: *
                      4: *       Original code from Micro Computer Systems, Inc.
                      5: *       Copyright(c) 1992  All Rights Reserved.
                      6: *       Microsoft Developer Support
                      7: *       Copyright (c) 1992, 1993 Microsoft Corporation
                      8: *
                      9: *  Demonstrates basic sockets programming with the Windows Sockets API
                     10: *  using the NWLink transport.
                     11: * 
                     12: ****************************************************************************/
                     13: #include <winsock.h>
                     14: #include <stdio.h>
                     15: #include "externs.h"
                     16: 
                     17: #define WSAERRGAP1 28
                     18: #define WSAERRGAP2 19
                     19:  
                     20: extern ERROR_STRUCT errlist[];
                     21: 
                     22: /****************************************************************************
                     23: *
                     24: *    FUNCTION:  get_error_text( int error )
                     25: *
                     26: *    PURPOSE:   Gets the text string explaining the error number passed in.
                     27: *                  If the error number is 0, or is not found, a respective
                     28: *                              message is returned.
                     29: *
                     30: *    ARGUMENTS:        int     error number to look up
                     31: *                
                     32: *       RETURNS:   LPCSTR      => char string having error message
                     33: *                              
                     34: *\***************************************************************************/
                     35: LPCSTR get_error_text(int error)
                     36: {
                     37:     int search = 0;
                     38: 
                     39: 
                     40:     /*
                     41:     *   No error
                     42:     */
                     43: 
                     44:     if (!error)
                     45:         return (LPCSTR)msg_no_error;
                     46: 
                     47:     /* 
                     48:     *   Search through our array of error number / string pairs
                     49:     *   until we find a matching error number or get to the end
                     50:     *   of our list.  If we found a matching error number, 
                     51:     *   return a LPSTR to the corresponding string.
                     52:     */
                     53: 
                     54:     while (errlist[search].errstr) {
                     55:         if (error == errlist[search].errnum)
                     56:             return errlist[search].errstr;
                     57:         search++;
                     58:     }
                     59: 
                     60:     /*
                     61:     * If we didn't have the error in our list, return unkown 
                     62:     */
                     63: 
                     64:     return (LPCSTR)msg_unknown_error;
                     65: }
                     66: 
                     67:     

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