怎么样用c＋＋通过wmi实现内存监控，CPU监控，硬盘使用情况的监控，网络速度监控。

[conzero]

怎么样用c＋＋通过wmi实现内存监控，CPU监控，硬盘使用情况的监控，网络速度监控。

[healer_kx]

MARK

[Jerry3385]

//修改代码中的 “SELECT * FROM Win32_OperatingSystem”获得结果集合
//hr = pclsObj->Get(L"Name", 0, &vtProp, 0, 0); 修改L“name”得到你想要的项


#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;

// Step 1: --------------------------------------------------
// 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.
}

// Step 2: --------------------------------------------------
// Set general COM security levels --------------------------
// Note: If you are using Windows 2000, you need to specify -
// the default authentication credentials for a user by using
// a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----
// parameter of CoInitializeSecurity ------------------------

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 << "Failed to initialize security. Error code = 0x"
<< hex << hres << endl;
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 << "Failed to create IWbemLocator object."
<< " Err code = 0x"
<< hex << hres << endl;
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 (e.g. Kerberos)
0, // Context object
&pSvc // pointer to 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;


// 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 << "Could not set proxy blanket. Error code = 0x"
<< hex << hres << endl;
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 << "Query for operating system name failed."
<< " Error code = 0x"
<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}

// Step 7: -------------------------------------------------
// Get the data from the query in step 6 -------------------

IWbemClassObject *pclsObj;
ULONG uReturn = 0;

while (pEnumerator)
{
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,
&pclsObj, &uReturn);

if(0 == uReturn)
{
break;
}

VARIANT vtProp;
VariantInit(&vtProp);

// Get the value of the Name property
hr = pclsObj->Get(L"Name", 0, &vtProp, 0, 0);
wcout << " OS Name : " << vtProp.bstrVal << endl;
VariantClear(&vtProp);
}

// Cleanup
// ========

pSvc->Release();
pLoc->Release();
pEnumerator->Release();
pclsObj->Release();
CoUninitialize();

return 0; // Program successfully completed.

}

[thinkinnight]

mark

[iu_81]

初始化 COM 接口:
访问 WMI, 必须先初始化 COM 接口, 在程序的一开始调用 CoInitialize(NULL)初始化, 在结束时调用CoUninitialize()释放资源。
这两个函数在 #include <comdef.h> 里面定义。

② 获取访问 WMI 权限:
CoInitializeSecurity(NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_PKT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, 0);
如果这个函数返回 S_OK 获取权限成功, 否则为失败。

③ 通过 IWbemLocator 和 IWbemServices 这两个 COM 接口访问 WMI, 获取系统信息。
这个函数的参数: lpList 返回信息, wsClass 为要查找的系统信息类。
这些COM接口在 #include <wbemidl.h> 里定义。

void GetWmiInfo(TStrings *lpList, WideString wsClass)
{
IWbemLocator *pWbemLocator = NULL;
if(CoCreateInstance(CLSID_WbemAdministrativeLocator, NULL, CLSCTX_INPROC_SERVER|CLSCTX_LOCAL_SERVER, IID_IUnknown, (void**)&pWbemLocator) == S_OK)
{
IWbemServices *pWbemServices = NULL;
WideString wsNamespace = (L"root\\cimv2");
if(pWbemLocator->ConnectServer(wsNamespace, NULL, NULL, NULL, 0, NULL, NULL, &pWbemServices) == S_OK)
{
IEnumWbemClassObject *pEnumClassObject = NULL;
WideString wsWQL=L"WQL", wsQuery=WideString(L"Select * from ")+wsClass;
if(pWbemServices->ExecQuery(wsWQL, wsQuery, WBEM_FLAG_RETURN_IMMEDIATELY,NULL, &pEnumClassObject) == S_OK)
{
IWbemClassObject *pClassObject = NULL;
ULONG uCount = 1, uReturned;
if(pEnumClassObject->Reset() == S_OK)
{
int iEnumIdx = 0;
while(pEnumClassObject->Next(WBEM_INFINITE, uCount, &pClassObject, &uReturned) == S_OK)
{
lpList->Add("---------------- ["+IntToStr(iEnumIdx)+"] -----------------");

SAFEARRAY *pvNames = NULL;
if(pClassObject->GetNames(NULL, WBEM_FLAG_ALWAYS | WBEM_MASK_CONDITION_ORIGIN, NULL, &pvNames) == S_OK)
{
long vbl, vbu;
SafeArrayGetLBound(pvNames, 1, &vbl);
SafeArrayGetUBound(pvNames, 1, &vbu);
for(long idx=vbl; idx<=vbu; idx++)
{
long aidx = idx;
wchar_t *wsName = 0;
VARIANT vValue;
VariantInit(&vValue);
SafeArrayGetElement(pvNames, &aidx, &wsName);

BSTR bs = SysAllocString(wsName);
HRESULT hRes = pClassObject->Get(bs, 0, &vValue, NULL, 0);
SysFreeString(bs);

if(hRes == S_OK)
{
AnsiString s;
Variant v = *(Variant*)&vValue;
if(v.IsArray())
{
for(int i=v.ArrayLowBound(); i<=v.ArrayHighBound(); i++)
{
Variant a = v.GetElement(i);
if(!s.IsEmpty())
s+=", ";
s+=VarToStr(a);
}
}
else
{
s = VarToStr(v);
}
lpList->Add(AnsiString(wsName)+"="+s);
}

VariantClear(&vValue);
SysFreeString(wsName);
}
}
if(pvNames)SafeArrayDestroy(pvNames);
iEnumIdx++;
}
}
if(pClassObject)pClassObject->Release();
}
if(pEnumClassObject)pEnumClassObject->Release();
}
if(pWbemServices)pWbemServices->Release();
}
if(pWbemLocator)pWbemLocator->Release();
}
//---------------------------------------------------------------------------

// 通过 WIN32_bios 获取 BIOS 信息:
void __fastcall TForm1::Button1Click(TObject *Sender)
{
Memo1->Lines->Add("================== [WIN32_bios] =================");
GetWmiInfo(Memo1->Lines, "WIN32_bios");
Memo1->Lines->Add("");
}

[freshui]

呵呵 不清楚 学习学习

[iu_81]

可以访问的信息类型有:
Win32_1394Controller
Win32_BaseBoard
Win32_Battery
Win32_BIOS
Win32_Bus
Win32_CacheMemory
Win32_CDROMDrive
Win32_CurrentProbe
Win32_DesktopMonitor
Win32_DeviceMemoryAddress
Win32_DiskDrive
Win32_DisplayConfiguration
Win32_DisplayControllerConfiguration
Win32_DMAChannel
Win32_Fan
Win32_FloppyController
Win32_FloppyDrive
Win32_HeatPipe
Win32_IDEController
Win32_InfraredDevice
Win32_IRQResource
Win32_Keyboard
Win32_MemoryArray
Win32_MemoryDevice
Win32_MotherboardDevice
Win32_NetworkAdapter
Win32_NetworkAdapterConfiguration
Win32_OnBoardDevice
Win32_ParallelPort
Win32_PCMCIAController
Win32_PhysicalMemory
Win32_PhysicalMemoryArray
Win32_PnPEntity
Win32_PointingDevice
Win32_PortableBattery
Win32_PortConnector
Win32_PortResource
Win32_POTSModem
Win32_PowerManagementEvent
Win32_Printer
Win32_PrinterConfiguration
Win32_PrintJob
Win32_Processor
Win32_Refrigeration
Win32_SerialPort
Win32_SerialPortConfiguration
Win32_SMBIOSMemory
Win32_SoundDevice
Win32_SystemEnclosure
Win32_SystemMemoryResource
Win32_SystemSlot
Win32_TapeDrive
Win32_TemperatureProbe
Win32_UninterruptiblePowerSupply
Win32_USBController
Win32_VideoConfiguration
Win32_VideoController
Win32_VoltageProbe

以上类型(字符串值)通过前面写的函数 GetWmiInfo 可以得到相应的信息, 例如 GetWmiInfo(Memo1->Lines, "WIN32_bios");

[todototry]

mark之

[theendname]

mark

[rongcanf]

学习

[HewpKanXue]

学习

[cyvan]

太牛了

[libadingzi]

这篇文章内容很丰富，写得有水平，对技术开发帮助很大，一千万个顶了

[wil90]

学习了~~

[liu163169]

真是神人是也～～

[runryan]

抄msdn的代码

[至善者善之敌]

你们的回答太霸道了！！