Program to list the names of systems connected on a network/workgroup

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Introduction

This program acts as a "Network Neighbourhood" which shows all the systems connected to a network of a particular workgroup. You can use this code as a part of a your networking program.

Using the code

Before using this code include Netapi32.lib in Project Settings(Alt+F7)->Links->Object/library modules. Also include the header file "netserv.h" and "netservDlg.h". The main function or class used is NetServerEnum.

#include "netserv.h"
#include "netservDlg.h"

LPSERVER_INFO_101 pBuf = NULL; //allocate buffer
DWORD dwServerType = SV_TYPE_SERVER; // all servers
NET_API_STATUS nStatus;

nStatus = NetServerEnum(NULL,
 dwLevel,
 (LPBYTE *) &pBuf,
 dwPrefMaxLen,
 &dwEntriesRead,
 &dwTotalEntries,
 dwServerType,
 NULL,
 &dwResumeHandle);

If the call succeeds it will return a BOOL value in the form of NET_API_STATUS. All the names would be taken into a buffer and then listed in the list box.

Points of Interest

1. After NetServerEnum() call, convert pTmpBuf->sv101_name to wchar_t type using swprintf().

       <br>
       wchar_t szWcharBuf[100];

   <br>
       swprintf(szWcharBuf, L"Name: %s\n", pTmpBuf->sv101_name); 

2. Use this wchar_t buffer in WideCharToMultiByte() API. The second argument should be this flag WC_NO_BEST_FIT_CHARS. That's it; you will get the ANSI string as out parameter.

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