求助通过WMI获取电脑内存的根数、大小、位置

[zjhthefirst]

前辈们,弱弱的問問，通过wmi打开哪一个namespace可以找到和电脑内存相关的信息啊！从Win32_MemoryDevice里面怎么读取memory的信息。谢谢！

[Gloveing]

[Quote=引用 2 楼 zjhthefirst 的回复:]

請問通过Win32_MemoryDevice这个class可以获取memory的信息吗？怎么获取？谢谢！
[/Quote]

用GlobalMemoryStatus
The GlobalMemoryStatus function obtains information about the computer system's current usage of both physical and virtual memory.

VOID GlobalMemoryStatus(
LPMEMORYSTATUS lpBuffer // pointer to the memory status structure
);

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[zjhthefirst]

如果我的电脑上插2根内存条，我怎么获取每一根内存条的大小，以及是插在哪个插槽？用wmi的方式怎么获取这些信息？api函数是哪些？谢谢！

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[cocoabird]

参考http://blog.csdn.net/norains/archive/2010/02/03/5285737.aspx

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[zjhthefirst]

請問通过Win32_MemoryDevice这个class可以获取memory的信息吗？怎么获取？谢谢！

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[一丝晨光]

msdn有例子的：

#define _WIN32_DCOM #include <iostream> using namespace std; #include <comdef.h> #include <Wbemidl.h> # pragma comment(lib, "wbemuuid.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_t(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; // Set the IWbemServices proxy so that impersonation // of the user (client) occurs. 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_t("WQL"), bstr_t("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. }

还可以参考：
http://topic.csdn.net/u/20081030/09/26ee7996-6bb7-4614-b75d-62db34fc42d4.html

一个用VB获取内存信息的：
http://blog.chinaunix.net/space.php?uid=199788&do=blog&id=99524

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[一丝晨光]

也可以参考：
http://www.codeproject.com/KB/system/Using_WMI_in_Visual_C__.aspx?display=PrintAll&fid=31435&df=90&mpp=25&noise=3&sort=Position&view=Quick&select=1699353&fr=26

刚刚发的代码格式有问题，重发下；

#define _WIN32_DCOM
#include <iostream>
using namespace std;
#include <comdef.h>
#include <Wbemidl.h>

# pragma comment(lib, "wbemuuid.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_t(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;

    // Set the IWbemServices proxy so that impersonation
    // of the user (client) occurs.
    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_t("WQL"), 
        bstr_t("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.
}

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