Win7下使用WMI获取移动磁盘序列号

    使用WMI方式来获取移动磁盘序列号仅支持Vista及以上系统。网上有些资料显示，在XP系统下能够使用WMI获取序列号，我反正试过了都不行。后来在https://msdn.microsoft.com/en-us/library/aa394132(VS.85).aspx证实了这一点！废话少说，直接上代码：

#include <WbemIdl.h>#include <comdef.h>#pragma comment(lib,"WbemUuid.lib")HRESULT GetSerialNumber(void){IWbemServices* pWbemSvc = NULL;IWbemLocator* pWbemLoc= NULL;HRESULT hRes;hRes = CoInitializeEx(0, COINIT_MULTITHREADED);if (FAILED(hRes)){OutputDebugStr(_T("Failed to initialize COM library!"));return hRes;}hRes = CoInitializeSecurity(NULL, -1,                          // COM authenticationNULL,                        // Authentication servicesNULL,                        // ReservedRPC_C_AUTHN_LEVEL_DEFAULT,   // Default authentication RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation  NULL,                        // Authentication infoEOAC_NONE,                   // Additional capabilities NULL                         // Reserved);if (FAILED(hRes) && RPC_E_TOO_LATE != hRes){OutputDebugStr(_T("Failed to initialize security!"));return hRes;}hRes = CoCreateInstance(CLSID_WbemLocator, 0, \CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *) &pWbemLoc);if (FAILED(hRes)){OutputDebugStr(_T("Failed to create IWbemLocator object!"));CoUninitialize();return hRes;}hRes = pWbemLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), // Object path of WMI namespaceNULL,                    // User name. NULL = current userNULL,                    // User password. NULL = current0,                       // Locale. NULL indicates currentNULL,                    // Security flags.0,                       // Authority (e.g. Kerberos)0,                       // Context object &pWbemSvc                // pointer to IWbemServices proxy);if (FAILED(hRes)){OutputDebugStr(_T("Could not connect!"));pWbemLoc->Release();     CoUninitialize();return hRes;}hRes = CoSetProxyBlanket(pWbemSvc,                    // Indicates the proxy to setRPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxxRPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxxNULL,                        // Server principal name RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxxNULL,                        // client identityEOAC_NONE                    // proxy capabilities );if (FAILED(hRes)){OutputDebugStr(_T("Could not set proxy blanket!"));pWbemSvc->Release();pWbemLoc->Release();     CoUninitialize();return hRes;}USES_CONVERSION;VARIANT vtProp;ULONG uRet = 0;IEnumWbemClassObject* pEnumClsObj = NULL;IWbemClassObject* pWbemClsObj = NULL;CComBSTR strQuery("SELECT * FROM Win32_DiskDrive WHERE InterfaceType='USB'");hRes = pWbemSvc->ExecQuery(CComBSTR("WQL"), strQuery, \WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, \0, &pEnumClsObj);if (FAILED(hRes)){OutputDebugStr(_T("Failed to ExecQuery!"));if (pEnumClsObj != NULL){pEnumClsObj->Release();}pWbemSvc->Release();pWbemLoc->Release();     CoUninitialize();return hRes;  }VariantInit(&vtProp);CStringArray strArray1;CStringArray strArray2;CStringArray strArray3;while (SUCCEEDED(pEnumClsObj->Next(WBEM_INFINITE, 1, &pWbemClsObj, &uRet))){if (uRet <= 0){break;}//获取物理磁盘号:\\.\PHYSICALDRIVE0hRes = pWbemClsObj->Get(CComBSTR(_T("DeviceID")), 0, &vtProp, 0, 0);strArray1.Add(AnalizeVariant(&vtProp));VariantClear(&vtProp);//获取磁盘名称hRes = pWbemClsObj->Get(CComBSTR(_T("Model")), 0, &vtProp, 0, 0);strArray2.Add(AnalizeVariant(&vtProp));VariantClear(&vtProp);//获取磁盘序列号hRes = pWbemClsObj->Get(CComBSTR(_T("SerialNumber")), 0, &vtProp, 0, 0);strArray3.Add(AnalizeVariant(&vtProp));VariantClear(&vtProp);        }VariantClear(&vtProp);if (pEnumClsObj != NULL){pEnumClsObj->Release();pEnumClsObj = NULL;}if (pWbemClsObj != NULL){pWbemClsObj->Release();pWbemClsObj = NULL;}pWbemSvc->Release();pWbemLoc->Release();CoUninitialize();return S_OK;}

    以上代码已在Win7 + VS 2008上测试通过。