求助通过WMI获取电脑内存的根数、大小、位置

zjhthefirst 2011-09-23 12:27:01
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!
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一丝晨光 2012-02-14
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.
}


回复
一丝晨光 2012-02-14
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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zjhthefirst 2011-09-23
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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cocoabird 2011-09-23
参考http://blog.csdn.net/norains/archive/2010/02/03/5285737.aspx
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zjhthefirst 2011-09-23
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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Gloveing 2011-09-23
[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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