WMI网络连接状态及连接类型检测

[OneOnce]

如何检测当前计算机网络连接状态：
1. 实时监测有线网络拔插（用线程）
2. 检测当前是有线连接还是WIFI或者其他方式如3G连接等

以下代码红色标记部分应如何传递参数才能实现，请高手指点。

BOOL lantest::ManageWMI(char *str)
{
    HRESULT hres;
    char szTmp[40960];

	//http://www.189works.com/article-9608-1.html


    // Step 1: --------------------------------------------------
    // Initialize COM. ------------------------------------------

    hres = CoInitializeEx(NULL, COINIT_MULTITHREADED);

    // 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)) {
        sprintf(str,"Failed to initialize security. Error code = 0x%X/r/n",hres);
        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)) {
        sprintf(str,"Failed to create IWbemLocator object. Err code = 0x%X/r/n",hres);
        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)) {
        sprintf(str,"Could not connect. Error code = 0x%X/r/n",hres);
        pLoc->Release();
        CoUninitialize();
        return 1; // Program has failed.
    }

    sprintf(str,"Connected to ROOT//CIMV2 WMI namespace");
   
    // 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)) {
        sprintf(str,"Could not set proxy blanket. Error code = 0x%X/r/n",hres);
        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;
    IWbemClassObject *pclsObj;
    ULONG uReturn = 0;

    // get baseboard's infomation
   

    hres = pSvc->ExecQuery(
						bstr_t("WQL"),
						//bstr_t("SELECT * FROM Win32_BaseBoard"),// WHERE IPEnabled = 'TRUE'"),
						//bstr_t("SELECT * FROM Win32_Process"),
						//bstr_t("SELECT * FROM Win32_NetworkAdapter"),
						bstr_t("SELECT * FROM Win32_NetworkAdapterConfiguration"),
						WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
						NULL,
						&pEnumerator);
    if (FAILED(hres)) {
        sprintf(str,"Query for BaseBoard's infomation failed. Error code = 0x%X/r/n", hres);
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return 1; // Program has failed.
    }

    uReturn = 0;
	BSTR strClassProp = SysAllocString(L"__CLASS");

	//http://msdn.microsoft.com/en-us/library/windows/desktop/aa394216(v=vs.85).aspx
	//http://blog.csdn.net/wangjieest/article/details/7320572

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

		if(0 == uReturn)
		{
			break;
		}
		VARIANT vtProp;
		VariantInit(&vtProp);
		hr = pclsObj->Get(L"IPXMediaType", 0, &vtProp, 0, 0);
		//hr = pclsObj->Get(L"Name", 0, &vtProp, 0, 0);//当前运行进程

		if (vtProp.bstrVal)
		{
			NdisMediaConnectStatus++;
		}
		VariantClear(&vtProp);
	}
 

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

    return 0; // Program successfully completed.

}

以下2句应该参数应如何设置：
bstr_t("SELECT * FROM Win32_NetworkAdapterConfiguration")
hr = pclsObj->Get(L"IPXMediaType", 0, &vtProp, 0, 0);

[OneOnce]

咋无人问津呢~~