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Код


#include <windows.h>
#include <stdio.h>
#define BUFSIZE 1024
int  main()
{
   LPTSTR lpszSystemInfo;      // pointer to system information string
   DWORD cchBuff = BUFSIZE;    // size of computer or user name
   TCHAR tchBuffer[BUFSIZE];   // buffer for string
   DWORD dwResult;             // function return value
 
   lpszSystemInfo = tchBuffer; 
 
   // Get and display the name of the computer.
 
   if( GetComputerName(lpszSystemInfo, &cchBuff) ) 
      printf("Computer name:  %s\n", lpszSystemInfo); 
 
   // Get and display the user name.
   cchBuff = BUFSIZE; 
   if( GetUserName(lpszSystemInfo, &cchBuff) )
      printf("User name:  %s\n\n", lpszSystemInfo);
 
   // Get and display the system directory.
 
   if( GetSystemDirectory(lpszSystemInfo, MAX_PATH+1) ) 
      printf("System directory:  %s\n", lpszSystemInfo); 
   // Get and display the Windows directory.
 
   if( GetWindowsDirectory(lpszSystemInfo, MAX_PATH+1) )
      printf("Windows directory:  %s\n\n", lpszSystemInfo);
 
   // Display the "environment variables" header.
 
   printf("Environment variables (partial list): \n"); 
 
   // Expand the OS environment variable.
 
   dwResult = ExpandEnvironmentStrings( 
                 "OS=%OS%",
                 lpszSystemInfo, 
                 BUFSIZE);
   if( dwResult <= BUFSIZE )
      printf("  %s\n", lpszSystemInfo);
 
   // Expand the PATH environment variable.
 
   dwResult = ExpandEnvironmentStrings( 
                 "PATH=%PATH%", 
                 lpszSystemInfo, 
                 BUFSIZE);
   if( dwResult <= BUFSIZE )
      printf("  %s\n", lpszSystemInfo);
 
   // Expand the TMP environment variable.
  
   dwResult = ExpandEnvironmentStrings( 
               "TEMP=%TEMP%",
               lpszSystemInfo, 
               BUFSIZE);
   if( dwResult <= BUFSIZE )
      printf("  %s\n", lpszSystemInfo);
  SYSTEM_INFO siSysInfo;
   // info about "metall" coping into structure SYSTEM_INFO.
   GetSystemInfo(&siSysInfo);
   // printing SYSTEM_INFO.
   printf("Hardware information: \n");
   printf("  OEM ID: %u\n", siSysInfo.dwOemId);
   printf("  Number of processors: %u\n",
      siSysInfo.dwNumberOfProcessors);
   printf("  Page size: %u\n", siSysInfo.dwPageSize);
   printf("  Processor type: %u\n", siSysInfo.dwProcessorType);
   printf("  Minimum application address: %lx\n",
      siSysInfo.lpMinimumApplicationAddress);
   printf("  Maximum application address: %lx\n",
      siSysInfo.lpMaximumApplicationAddress);
   printf("  Active processor mask: %u\n",
      siSysInfo.dwActiveProcessorMask);
getchar();
}

Код


#define _WIN32_DCOM
#include <iostream>
#include <comdef.h>
#include <Wbemidl.h>

#pragma comment(lib, "wbemuuid.lib")

int main(int argc, char **argv)
{
    CoInitialize(NULL);
    
    if(CoInitializeSecurity( NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_PKT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, 0) != S_OK)
        return 1;

    IWbemLocator* pIWbemLocator        = NULL;
    IWbemServices* pWbemServices        = NULL;
    IEnumWbemClassObject* pEnumObject    = NULL;

    BSTR bstrNamespace = (L"root\\cimv2");

    HRESULT hRes = CoCreateInstance(
        CLSID_WbemAdministrativeLocator,
        NULL,
        CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER,
        IID_IUnknown,
        (void**)&pIWbemLocator);

    if (SUCCEEDED(hRes))
    {
        hRes = pIWbemLocator->ConnectServer(bstrNamespace,
            NULL,
            NULL,
            NULL,
            0,
            NULL,
            NULL,
            &pWbemServices);
    }

    hRes = pWbemServices->ExecQuery(L"WQL", L"Select * from Win32_BaseBoard", WBEM_FLAG_RETURN_IMMEDIATELY,NULL,&pEnumObject);
    ULONG uCount = 1, uReturned;
    IWbemClassObject * pClassObject = NULL;
    hRes = pEnumObject->Reset();
    hRes = pEnumObject->Next(WBEM_INFINITE,uCount, &pClassObject, &uReturned);
    VARIANT v;
    BSTR strClassProp = SysAllocString(L"SerialNumber");
    hRes = pClassObject->Get(strClassProp, 0, &v, 0, 0);
    SysFreeString(strClassProp);

    _bstr_t bstrPath = &v;

    char* strPath=(char*)bstrPath;
    if (SUCCEEDED(hRes))
        std::cout << strPath << std::endl;
    else
        std::cerr << "Error getting object" << std::endl;
    
    VariantClear( &v );
    pIWbemLocator->Release();
    pWbemServices->Release();
    pEnumObject->Release();
    pClassObject->Release();
    CoUninitialize();
}

Цитата(bigturtle @ 28.7.2009, 09:47

)

Хотелось бы узнать как это работает (шутка)

Цитата

В итоге Windows предоставляет эту информацию, мы просто ее берем.

Цитата(jonie @ 28.7.2009, 23:58

)

... а значит можем и подменить...