#define _WIN32_DCOM

 #include <iostream>

 #include <comdef.h>

 #include <Wbemidl.h>

 using namespace std;

 #pragma comment(lib, "wbemuuid.lib")

 int main(int argc, char **argv)

 {

     HRESULT hres;

     // 第一步：初始化COM

     hres = CoInitializeEx(, COINIT_MULTITHREADED);

     if (FAILED(hres))

     {

         cout << "Failed to initialize COM library. Error code = 0x"

             << hex << hres << endl;

         return ;                  // Program has failed.

     }

     // 第二步：设置COM安全级别

     hres = CoInitializeSecurity(

         NULL,

         -,                          // COM 认证

         NULL,                        // 服务认证

         NULL,                        // 保留NULL

         RPC_C_AUTHN_LEVEL_DEFAULT,   // 默认权限

         RPC_C_IMP_LEVEL_IMPERSONATE, // 默认模拟

         NULL,                        // 认证信息

         EOAC_NONE,                   // Additional capabilities

         NULL                         // Reserved

         );

     if (FAILED(hres))

     {

         cout << "安全级别初始化失败，错误代码 = 0x" << hex << hres << endl;

         CoUninitialize();

         return ;                    // Program has failed.

     }

     // 第三步：获取初始化本地WMI

     IWbemLocator *pLoc = NULL;

     hres = CoCreateInstance(CLSID_WbemLocator, , CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *)&pLoc);

     if (FAILED(hres))

     {

         cout << "创建IWbemLocator对象失败，错误代码 = 0x" << hex << hres << endl;

         CoUninitialize();

         return ;                 // Program has failed.

     }

     // 第四步：通过 IWbemLocator::ConnectServer 方法连接WMI

     IWbemServices *pSvc = NULL;

     // 使用IWbemServices 连接 root\cimv2 命名空间

     hres = pLoc->ConnectServer(

         _bstr_t(L"ROOT\\CIMV2"), // 对象路径

         NULL,                    // 用户名为空默认当前用户

         NULL,                    // 用户密码为空默认当前密码

         ,                       // 本地，NULL表示当前

         NULL,                    // 安全标志

         ,                       // 授权人

         ,                       // 上下文对象

         &pSvc                    // IWbemServices代理指针

         );

     if (FAILED(hres))

     {

         cout << "无法连接，错误代码 = 0x" << hex << hres << endl;

         pLoc->Release();

         CoUninitialize();

         return ;                // Program has failed.

     }

     cout << "已连接到 ROOT\\CIMV2 WMI 命名空间" << endl;

     // 第五步：设置代理安全级别

     hres = CoSetProxyBlanket(

         pSvc,                        // 要设置的代理指针

         RPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxx

         RPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxx

         NULL,                        // 委托服务名

         RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx

         RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx

         NULL,                        // 客户端身份

         EOAC_NONE                    // 代理能力

         );

     if (FAILED(hres))

     {

         cout << "代理设置失败，错误代码 = 0x" << hex << hres << endl;

         pSvc->Release();

         pLoc->Release();

         CoUninitialize();

         return ;               // Program has failed.

     }

     // 第六步：使用 IWbemServices 指针获取系统名

     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))

     {

         cout << "查询系统名失败，错误代码 = 0x" << hex << hres << endl;

         pSvc->Release();

         pLoc->Release();

         CoUninitialize();

         return ;               // Program has failed.

     }

     // 第七步：获取查询数据

     IWbemClassObject *pclsObj = NULL;

     ULONG uReturn = ;

     while (pEnumerator)

     {

         HRESULT hr = pEnumerator->Next(WBEM_INFINITE, ,&pclsObj, &uReturn);

         if ( == uReturn)

         {

             break;

         }

         VARIANT vtProp;

         // 获取Name属性值

         hr = pclsObj->Get(L"Name", , &vtProp, , );

         wcout << " 系统名 : " << vtProp.bstrVal << endl;

         VariantClear(&vtProp);

         pclsObj->Release();

     }

     // 清理工作

     pSvc->Release();

     pLoc->Release();

     pEnumerator->Release();

     CoUninitialize();

     system("pause");

     return ;   // Program successfully completed.

 }