windows下WMI使用C++查询用户硬件信息

最近需要做下用户信息统计，发现WMI真是个好东西，同时觉得COM这东西，还真不能少>_<！！

下面是源码：

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/********************************************************************     created:    2014/02/18     author:     baesky           purpose:    Gater user infomation *********************************************************************/ #include <comdef.h> #include <Wbemidl.h>   # pragma comment(lib, "wbemuuid.lib")   struct UserInfo {     /** your spec*/ };   /** video card and OS */ bool GetUserInfo(UserInfo& Info) {     HRESULT hres;       hres =  CoInitialize( NULL );     if (FAILED(hres))     {         return false;                     }       hres =  CoInitializeSecurity(         NULL,         -1,                                  NULL,                                NULL,                                RPC_C_AUTHN_LEVEL_DEFAULT,           RPC_C_IMP_LEVEL_IMPERSONATE,         NULL,                                EOAC_NONE,                           NULL                                 );         if (FAILED(hres))     {         CoUninitialize();         return false;                       }       IWbemLocator *pLoc = NULL;       hres = CoCreateInstance(         CLSID_WbemLocator,                     0,         CLSCTX_INPROC_SERVER,         IID_IWbemLocator, (LPVOID *) &pLoc);       if (FAILED(hres))     {         CoUninitialize();         return false;                     }       IWbemServices *pSvc = NULL;       hres = pLoc->ConnectServer(         _bstr_t(L"ROOT\\CIMV2"),         NULL,                            NULL,                            0,                               NULL,                            0,                               0,                               &pSvc                            );       if (FAILED(hres))     {         pLoc->Release();             CoUninitialize();         return false;                   }       hres = CoSetProxyBlanket(         pSvc,                                RPC_C_AUTHN_WINNT,                   RPC_C_AUTHZ_NONE,                    NULL,                                RPC_C_AUTHN_LEVEL_CALL,              RPC_C_IMP_LEVEL_IMPERSONATE,         NULL,                                EOAC_NONE                            );       if (FAILED(hres))     {         pSvc->Release();         pLoc->Release();             CoUninitialize();         return false;                   }       IEnumWbemClassObject* pEnumerator = NULL;     hres = pSvc->ExecQuery(         bstr_t("WQL"),         bstr_t("SELECT * FROM Win32_OperatingSystem"),         WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,         NULL,         &pEnumerator);       if (FAILED(hres))     {         pSvc->Release();         pLoc->Release();         CoUninitialize();         return false;                   }       IWbemClassObject *pclsObj;     ULONG uReturn = 0;       while (pEnumerator)     {         HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,             &pclsObj, &uReturn);           if(0 == uReturn)         {             break;         }           VARIANT vtProp;           hr = pclsObj->Get(L"Caption", 0, &vtProp, 0, 0);  //os         //vtProp.bstrVal is what you need.           //VariantClear(&vtProp);         //hr = pclsObj->Get(L"CSDVersion", 0, &vtProp, 0, 0); // example "sp3"         //VariantClear(&vtProp);         //hr = pclsObj->Get(L"OSArchitecture", 0, &vtProp, 0, 0); // example x64         //VariantClear(&vtProp);           pclsObj->Release();     }           pEnumerator->Release();     pEnumerator=NULL;     hres = pSvc->ExecQuery(         bstr_t("WQL"),         bstr_t("SELECT * FROM Win32_VideoController"),         WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,         NULL,         &pEnumerator);       if (FAILED(hres))     {         pSvc->Release();         pLoc->Release();         CoUninitialize();         return false;                   }       while (pEnumerator)     {         HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,             &pclsObj, &uReturn);           if(0 == uReturn)         {             break;         }           VARIANT vtProp;           hr = pclsObj->Get(L"Caption", 0, &vtProp, 0, 0);  //video desc                 /**                   .,,,,,,,,,,,,,,,,,,,,,,your logic                  */         VariantClear(&vtProp);         pclsObj->Release();     }       pEnumerator->Release();     pEnumerator=NULL;     hres = pSvc->ExecQuery(         bstr_t("WQL"),         bstr_t("SELECT * FROM Win32_Processor"),         WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,         NULL,         &pEnumerator);       if (FAILED(hres))     {         pSvc->Release();         pLoc->Release();         CoUninitialize();         return false;                   }       while (pEnumerator)     {         HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,             &pclsObj, &uReturn);           if(0 == uReturn)         {             break;         }           VARIANT vtProp;           hr = pclsObj->Get(L"Name", 0, &vtProp, 0, 0);  //video desc          /**                   .,,,,,,,,,,,,,,,,,,,,,,your logic                  */         VariantClear(&vtProp);         pclsObj->Release();     }           pSvc->Release();     pLoc->Release();     pEnumerator->Release();           CoUninitialize();       return true; }