Source code for child.cpp

    1: #define WIN32_LEAN_AND_MEAN
    2: #include <windows.h>
    3: #include <stdio.h>
    4: #include <stdlib.h>
    5: #include "sharedmem.h"
    6: 
    7: #define MEM_NAME        "ParentChildSharedMemory"
    8: 
    9: typedef struct _DATA  {
   10:     int  value;
   11:     char sText[ 50 ];
   12: } DATA, *PDATA;
   13: 
   14: 
   15: void main( void )
   16: {
   17:     SharedMem sm;
   18: 
   19:     if ( !sm.Create( sizeof( DATA ), MEM_NAME ) )  {
   20:         printf( "Unable to create shared memory buffer! Error#: %d\n",
   21:                 sm.ErrorNumber() );
   22:         exit( EXIT_FAILURE );
   23:     }
   24: 
   25:     PDATA pdata = (PDATA) sm.GetMem();
   26: 
   27:     // put some random number and some text in shared memory
   28:     srand( GetTickCount() );
   29:     pdata->value = rand();
   30:     strcpy( pdata->sText, "Hi, dad!" );
   31: 
   32:     printf( "Child put the following in shared memory:\n"
   33:             "Value: %d\nText:  %s\n\n", pdata->value, 
   34:             pdata->sText );
   35: }
   36: 
   37: