有关WMI的一个程序问题？？？

Question

下面的这段代码是msdn上的一个完整的代码，网上也都说过，我 有两个问题请问：
1）_bstr_t(".."),通不过编译，老是提示：
        fatal error C1001: INTERNAL COMPILER ERROR
        (compiler file 'msc1.cpp', line 1786) 
         Please choose the Technical Support command on the Visual C++ 
         Help menu, or open the Technical Support help file for more information
2）我把_bstr_t该为BSTR后通过编译，但结果只显示连接到ROOT\CIMV2，而没有显示我想要的硬件信息。
代码如下：

Answer 1

#define _WIN32_DCOM
#include <iostream>
using namespace std;#include <Wbemidl.h>
//#include <comdef.h>
#include <string>
#include <objbase.h>
#pragma comment(lib, "wbemuuid.lib")
#pragma comment(lib, "ole32.lib") 
int main(int argc, char **argv)
{
    HRESULT hres;    // Initialize COM.
    hres =  CoInitializeEx(0, COINIT_MULTITHREADED); 
    if (FAILED(hres))
    {
        cout << "Failed to initialize COM library. " 
            << "Error code = 0x" 
            << hex << hres << endl;
        return 1;              // Program has failed.
    }    // Initialize 
    hres =  CoInitializeSecurity(
        NULL,     
        -1,      // COM negotiates service                  
        NULL,    // Authentication services
        NULL,    // Reserved
        RPC_C_AUTHN_LEVEL_DEFAULT,    // authentication
        RPC_C_IMP_LEVEL_IMPERSONATE,  // Impersonation
        NULL,             // Authentication info 
        EOAC_NONE,        // Additional capabilities
        NULL              // Reserved
        );                      
    if (FAILED(hres))
    {
        cout << "Failed to initialize security. " 
            << "Error code = 0x" 
            << hex << hres << endl;
        CoUninitialize();
        return 1;          // Program has failed.
    }    // Obtain the initial locator to Windows Management
    // on a particular host computer.
    IWbemLocator *pLoc = 0;    hres = CoCreateInstance(
        CLSID_WbemLocator,             
        0, 
        CLSCTX_INPROC_SERVER, 
        IID_IWbemLocator, (LPVOID *) &pLoc);
 
    if (FAILED(hres))
    {
        cout << "Failed to create IWbemLocator object. "
            << "Error code = 0x"
            << hex << hres << endl;
        CoUninitialize();
        return 1;       // Program has failed.
    }    IWbemServices *pSvc = 0;    // Connect to the root\cimv2 namespace with the
    // current user and obtain pointer pSvc
    // to make IWbemServices calls.    hres = pLoc->ConnectServer(
        
        BSTR(L"ROOT\\CIMV2"), // WMI namespace
        NULL,                    // User name
        NULL,                    // User password
        0,                       // Locale
        NULL,                    // Security flags                 
        0,                       // Authority       
        0,                       // Context object
        &pSvc                    // IWbemServices proxy
        );                              
    
    if (FAILED(hres))
    {
        cout << "Could not connect. Error code = 0x" 
            << hex << hres << endl;
        pLoc->Release();     
        CoUninitialize();
        return 1;                // Program has failed.
    }    cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;

Answer 2

hres = CoSetProxyBlanket(
       
       pSvc,                         // the proxy to set
       RPC_C_AUTHN_WINNT,            // authentication service
       RPC_C_AUTHZ_NONE,             // authorization service
       NULL,                         // Server principal name
       RPC_C_AUTHN_LEVEL_CALL,       // authentication level
       RPC_C_IMP_LEVEL_IMPERSONATE,  // impersonation level
       NULL,                         // client identity 
       EOAC_NONE                     // proxy capabilities     
    );
   
    if (FAILED(hres))
    {
        cout << "Could not set proxy blanket. Error code = 0x" 
             << hex << hres << endl;
        pSvc->Release();
        pLoc->Release();     
        CoUninitialize();
        return 1;               // Program has failed.
    }
    // Use the IWbemServices pointer to make requests of WMI. 
    // Make requests here:    // For example, query for all the running processes
    IEnumWbemClassObject* pEnumerator = NULL;
    hres = pSvc->ExecQuery(
        BSTR("WQL"), 
        BSTR("SELECT * FROM Win32_Process"),
        WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, 
        NULL,
        &pEnumerator);
    
    if (FAILED(hres))
    {
        cout << "Query for processes failed. "
             << "Error code = 0x" 
             << hex << hres << endl;
        pSvc->Release();
        pLoc->Release();     
        CoUninitialize();
        return 1;               // Program has failed.
    }
    else
    { 
        IWbemClassObject *pclsObj;
        ULONG uReturn = 0;
       
        while (pEnumerator)
        {    
            hres = pEnumerator->Next(WBEM_INFINITE, 1, 
                &pclsObj, &uReturn);
             
            if(0 == uReturn)
            {
                break;
            }
           
            VARIANT vtProp;
            
            // Get the value of the Name property
            hres = pclsObj->Get(L"Name", 0, &vtProp, 0, 0);
            wcout << "Process Name : " << vtProp.bstrVal << endl;

            VariantClear(&vtProp);
        }
         
    }
 
    // Cleanup
    // ========    pSvc->Release();
    pLoc->Release();     
    CoUninitialize();    return 0;   // Program successfully completed.
}

Answer 3

有兴趣的朋友看下，我用的是WINXP。多谢大家帮忙了