VC WMI应用获取SMBios中的信息

来源：互联网发布：厦门公安局网络刻章编辑：程序博客网时间：2024/06/05 17:37

首先关于WMI 的基本使用

请参考：http://blog.csdn.net/breaksoftware/article/details/8439975

在那里你可以找到系列连贯的文章，笔者写的很好很细腻，就是代码缺少了微量细节，其实这样也好，让你动动脑，杜绝“拿来主义”。

参考他的文章http://blog.csdn.net/breaksoftware/article/details/8821025，我们可以获取到很多常用信息

但有时我们需要获取SMBios中的一些OEM字段信息，而文章中并没有提到。

比如一个公司的PC有多个子品牌，对于他们的区分通常会存在SMBios中的OEM数据段的标志位里，如何获取这些信息呢？

于是我又为代码增加了几个函数：

HRESULT CWMI::GetSMBiosDataBlock(){HRESULT hr = E_FAIL;CComPtr<IWbemLocator> pLoc = NULL;CComPtr<IWbemServices> pSvc = NULL;do {hr = InitialCom();CHECKHR(hr);hr = SetComSecLevels();CHECKHR(hr);hr = ObtainLocator2WMI(pLoc);CHECKHR(hr);hr = Connect2WMI(pLoc, pSvc);CHECKHR(hr);hr = SetProxySecLevels(pSvc);CHECKHR(hr);hr = ExcuteGetData(pSvc);CHECKHR(hr);} while (0);return hr;}

HRESULT CSynQuery::ExcuteGetData(CComPtr<IWbemServices> pSvc){HRESULT hr = WBEM_S_FALSE;do {CComPtr<IEnumWbemClassObject> pEnumerator = NULL;hr = pSvc->CreateInstanceEnum(L"MSSMBios_RawSMBiosTables", 0, NULL,&pEnumerator);CHECKWMIHR(hr);ULONG uReturn = 0;while (pEnumerator) {CComPtr<IWbemClassObject> pclsObj = NULL;HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj, &uReturn);if ( 0 == uReturn) {break;}DealWithIWbemClassObject_GetBiosData(pclsObj);}} while (0);return hr;}HRESULT CSynQuery::DealWithIWbemClassObject_GetBiosData( CComPtr<IWbemClassObject> pclsObj ){HRESULT hr = WBEM_S_NO_ERROR; VARIANT data;CIMTYPE type;VariantInit(&data);do  {hr = pclsObj->Get(bstr_t("SmbiosMajorVersion"), 0,  &data, &type, NULL); CHECKWMIHR(hr);m_EPS.SMBIOSMajorVersion = data.bVal;hr = pclsObj->Get(bstr_t("SmbiosMinorVersion"), 0,  &data, &type, NULL); CHECKWMIHR(hr);m_EPS.SMBIOSMinorVersion = data.bVal;hr = pclsObj->Get(bstr_t("SMBiosData"), 0,  &data, &type, NULL); CHECKWMIHR(hr);UCHAR HUGEP *u_TempHugep;m_EPS.SmbiosData = data.parray; m_EPS.Length = m_EPS.SmbiosData->rgsabound[0].cElements;SafeArrayAccessData(data.parray, (void HUGEP *FAR *)&u_TempHugep);for(UINT i=0; i < m_EPS.Length; i++){m_BiosDataBlock[i] = u_TempHugep[i];}SafeArrayUnaccessData(data.parray);VariantClear(&data);} while (0);if(SUCCEEDED(hr))PrintfBiosDataBlock();return hr;}VOID CSynQuery::PrintfBiosDataBlock(){int i = 0;wprintf(L"---------SMBios data block---------\n---------Data Length %d---------\n---------Version:%d.%d---------\n",m_EPS.Length,m_EPS.SMBIOSMajorVersion,m_EPS.SMBIOSMinorVersion);system("pause");for (i = 0; i < m_EPS.Length; i ++){//8列if(i% 8 == 0)wprintf(L"\n");if((47 < m_BiosDataBlock[i] && m_BiosDataBlock[i] < 58) || (64 < m_BiosDataBlock[i] && m_BiosDataBlock[i] < 91) || (96 < m_BiosDataBlock[i] && m_BiosDataBlock[i] < 123))wprintf(L"%c", m_BiosDataBlock[i]);elsewprintf(L"0x%0.2X", m_BiosDataBlock[i]);wprintf(L"\t");}wprintf(L"\n");}

CSynQueryData的函数被我移到CSynQuery中。

typedef struct StructEPS{UCHAR         SMBIOSMajorVersion;UCHAR         SMBIOSMinorVersion;UINT          Length;SAFEARRAY     *SmbiosData;}EPS;

使用时的区别

void GetBaseboardInfo(){CSynQuery tSynQuery(L"ROOT\\CIMV2",L"SELECT * FROM Win32_BaseBoard");tSynQuery.ExcuteFun();}void GetSMBiosDataBlock(){CSynQuery tSynQuery(L"ROOT\\WMI",L"");tSynQuery.GetSMBiosDataBlock();}

可以看出我用的是DELL的机器，呵呵。

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