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#include <lm.h> #pragma comment (lib,"netapi32.lib") typedef NET_API_STATUS (WINAPI *FNetWkstaGetInfo)(LPWSTR, DWORD, LPBYTE *); typedef NET_API_STATUS (WINAPI *FNetApiBufferFree)(LPVOID); BOOL GetWorkGroupName(LPTSTR lpszGroupName, UINT iLen) { BOOL bRet = FALSE; memset(lpszGroupName, 0, iLen); //NT if (GetVersion() < 0x80000000) { HINSTANCE hDll = NULL; BOOL bLoad = FALSE; FNetWkstaGetInfo fnNetWkstaGetInfo = NULL; FNetApiBufferFree fnNetApiBufferFree = NULL; bLoad = GetProcAddresses( &hDll , "netapi32.dll" , 2 , &fnNetWkstaGetInfo , "NetWkstaGetInfo" , &fnNetApiBufferFree , "NetApiBufferFree"); if (bLoad == TRUE) { WKSTA_INFO_102 *pBuf = NULL; NET_API_STATUS nStatus; nStatus = fnNetWkstaGetInfo(NULL, 102, (LPBYTE *) & pBuf); if (nStatus == NERR_Success) { wcstombs(lpszGroupName, (PCWSTR)pBuf->wki102_langroup, iLen); bRet = TRUE; } if (pBuf != NULL) fnNetApiBufferFree(pBuf); FreeLibrary(hDll); } } // 9X else { HKEY hKey; DWORD dwType = REG_SZ; DWORD dwSize = iLen; LONG lRet; lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE , "System\\CurrentControlSet\\Services\\VxD\\VNETSUP" , 0 , KEY_READ , &hKey); if (lRet == ERROR_SUCCESS) { lRet = RegQueryValueEx( hKey , "Workgroup" , 0 , &dwType , (LPBYTE) lpszGroupName , &dwSize); bRet = (lRet == ERROR_SUCCESS); RegCloseKey(hKey); } } return bRet; }

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