C++获取CPU/硬盘序列号

#include "StdAfx.h"
#include "./puiddisk.h"
#define _WIN32_DCOM
#include <iostream>
using namespace std;
#include <comdef.h>
#include <Wbemidl.h>

# pragma comment(lib, "wbemuuid.lib")
CpuIDDisk::CpuIDDisk(void)
{
    GetInfomation();
}

CpuIDDisk::~CpuIDDisk(void)
{
}
int CpuIDDisk::GetInfomation(void)
{
    HRESULT hres;
    //步骤1：不是必须的，COM只须也只能初始化一次
     hres =  CoInitializeEx(0, COINIT_MULTITHREADED );
    if (FAILED(hres))
    {
        return 1; //初始化COM异常：注意，COM只须也只能初始化一次
    }
    //步骤2：不是必须的，COM只须也只能设置一次
    //Set general COM security levels
    hres =  CoInitializeSecurity(
        NULL, 
        -1,                          // COM authentication
        NULL,                        // Authentication services
        NULL,                        // Reserved
        RPC_C_AUTHN_LEVEL_DEFAULT,   // Default authentication 
        RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation  
        NULL,                        // Authentication info
        EOAC_NONE,                   // Additional capabilities 
        NULL                         // Reserved
        );
                      
    if (FAILED(hres))
    {
        CoUninitialize();
        return 1;                    // Program has failed.
    }
    
    //以上不是必须的，若已有“::COMInit();”，则要跳过
    //步骤3： Obtain the initial locator to WMI 
    IWbemLocator *pLoc = NULL;
    hres = CoCreateInstance(
        CLSID_WbemLocator,             
        0, 
        CLSCTX_INPROC_SERVER, 
        IID_IWbemLocator, (LPVOID *) &pLoc);
 
    if (FAILED(hres))
    {
        CoUninitialize();
        return 1;//Failed to create IWbemLocator object
    }

    //步骤4：Connect to WMI through the IWbemLocator::ConnectServer method
    IWbemServices *pSvc = NULL;
    hres = pLoc->ConnectServer(
         _bstr_t(L"ROOT//CIMV2"), // Object path of WMI namespace
         NULL,                    // User name. NULL = current user
         NULL,                    // User password. NULL = current
         0,                       // Locale. NULL indicates current
         NULL,                    // Security flags.
         0,                       // Authority (e.g. Kerberos)
         0,                       // Context object 
         &pSvc                    // pointer to IWbemServices proxy
         );
    
    if (FAILED(hres))
    {
        pLoc->Release();     
        CoUninitialize();
        return 1;                // Program has failed.
    }
    // 步骤5： Set security levels on the proxy
    hres = CoSetProxyBlanket(
       pSvc,                        // Indicates the proxy to set
       RPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxx
       RPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxx
       NULL,                        // Server principal name 
       RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx 
       RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
       NULL,                        // client identity
       EOAC_NONE                    // proxy capabilities 
    );

    if (FAILED(hres))
    {
        pSvc->Release();
        pLoc->Release();     
        CoUninitialize();
        return 1; 
    }

    // 步骤6：Use the IWbemServices pointer to make requests of WMI ----
    IEnumWbemClassObject* pEnumerator = NULL;
    //计算CPUID
    hres = pSvc->ExecQuery(
        bstr_t("WQL"), 
        bstr_t("SELECT * FROM Win32_Processor"),//Win32_OperatingSystem
        WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, 
        NULL,
        &pEnumerator);
    
    if (FAILED(hres))
    {
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return 1;
    }
    // 步骤7：Get the data from the query 
    IWbemClassObject *pclsObj;
    ULONG uReturn = 0;
    while (pEnumerator)
    {
        HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, 
            &pclsObj, &uReturn);

        if(0 == uReturn)
        {
            break;
        }
        VARIANT vtProp;
        VariantInit(&vtProp);
        hr = pclsObj->Get(L"ProcessorId", 0, &vtProp, 0, 0);
        strProcessID=_com_util::ConvertBSTRToString(vtProp.bstrVal);//strProcessID：类级变量
    }

    //计算硬盘系列号
    hres = pSvc->ExecQuery(
        bstr_t("WQL"), 
        bstr_t("SELECT * FROM Win32_DiskDrive"),
        WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, 
        NULL,
        &pEnumerator);

    if (FAILED(hres))
    {
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return 1; 
    }
    while (pEnumerator)
    {
        HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, 
            &pclsObj, &uReturn);

        if(0 == uReturn)
        {
            break;
        }

        VARIANT vtProp;
        VariantInit(&vtProp);
        hr = pclsObj->Get(L"PNPDeviceID", 0, &vtProp, 0, 0);
    strDisk=_com_util::ConvertBSTRToString(vtProp.bstrVal);
    }

    pSvc->Release();
    pLoc->Release();
    pEnumerator->Release();
    pclsObj->Release();
    CoUninitialize();

    return 0;