wmi获取硬件信息c语言,【C++】WMI获取系统硬件信息(CPU/DISK/NetWork etc)

#define _WIN32_DCOM

#include 

using namespace std;

#include 

#include 

#pragma comment(lib, "wbemuuid.lib")

int main(int argc, char **argv)

{

HRESULT hres;

// Step 1: --------------------------------------------------

// Initialize COM. ------------------------------------------

hres =  CoInitializeEx(0, COINIT_MULTITHREADED);

if (FAILED(hres))

{

cout <

<

return 1;                  // Program has failed.

}

// Step 2: --------------------------------------------------

// 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))

{

cout <

<

CoUninitialize();

return 1;                    // Program has failed.

}

// Step 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))

{

cout <

<

<

CoUninitialize();

return 1;                 // Program has failed.

}

// Step 4: -----------------------------------------------------

// Connect to WMI through the IWbemLocator::ConnectServer method

IWbemServices *pSvc = NULL;

// 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"), // 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 (for example, Kerberos)

0,                       // Context object

&pSvc                    // pointer to IWbemServices proxy

);

if (FAILED(hres))

{

cout <

<

pLoc->Release();

CoUninitialize();

return 1;                // Program has failed.

}

cout <

// Step 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))

{

cout <

<

pSvc->Release();

pLoc->Release();

CoUninitialize();

return 1;               // Program has failed.

}

// Step 6: --------------------------------------------------

// Use the IWbemServices pointer to make requests of WMI ----

// For example, get the name of the operating system

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 <

<

<

pSvc->Release();

pLoc->Release();

CoUninitialize();

return 1;               // Program has failed.

}

// Step 7: -------------------------------------------------

// Get the data from the query in step 6 -------------------

IWbemClassObject *pclsObj = NULL;

ULONG uReturn = 0;

while (pEnumerator)

{

HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,

&pclsObj, &uReturn);

if(0 == uReturn)

{

break;

}

VARIANT vtProp;

// Get the value of the Name property

hr = pclsObj->Get(L"Name", 0, &vtProp, 0, 0);

wcout <

VariantClear(&vtProp);

pclsObj->Release();

}

// Cleanup

// ========

pSvc->Release();

pLoc->Release();

pEnumerator->Release();

CoUninitialize();

return 0;   // Program successfully completed.

}