COM实现系统SENS接口获取网络断开事件

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文章标签：

#网络 #interface #windows #object #network #system

本文详细介绍了ISensNetworkInterface接口及其在Windows系统中的应用，如何通过ATL类实现事件订阅，并解析了各个事件方法的用途。此外，还提供了一个包含事件订阅实例的源代码段落。

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ISensNetwork Interface

从MSDN拷贝的关于ISensNetwork说明。查看实现源码。

The ISensNetwork interface handles network events fired by the System Event Notification Service (SENS).

When To Implement

Implement this interface on your sink object if you subscribe to any of the SENS network events. Each event corresponds to a method in this interface. This interface is an outgoing interface defined by SENS and implemented by the subscriber application as a dispatch interface.

When To Use

SENS and the COM Event System call the ISensNetwork methods on your sink object to fire the corresponding event.

Starting with applications designed for Windows Vista and Windows Server 2008, developers should consider using the Network List Manager instead of this interface.

Methods

The ISensNetwork interface inherits the methods of the IDispatch interface.

In addition, ISensNetwork defines the following methods.

MethodDescription

ConnectionMade

Specified connection has been established.

ConnectionMadeNoQOCInfo

Specified connection has been established with no Quality of Connection information available.

ConnectionLost

Specified connection has been dropped.

 

Windows中系统提供了System Event Notification Service(SENS)，系统事件通告服务。

我们用它可以得到：

  • TCP/IP网络事件，例如TCP/IP网络连接状态或连接质量信息。
  • 用户登入事件。
  • 电池和电源事件。

使用VC向导增加一个ATL类，

在头文件中导入Sens.dll。VC会自动生成头文件，包括Sens接口的定义。

 

// SensNetEvents.h : Declaration of the CSensNetEvents

#pragma once

#include "resource.h"       // main symbols
#include "StockInfo_i.h"
#import "C:\WINDOWS\System32\SENS.DLL" raw_interfaces_only, raw_native_types, no_namespace, named_guids 


#if defined(_WIN32_WCE) && !defined(_CE_DCOM) && !defined(_CE_ALLOW_SINGLE_THREADED_OBJECTS_IN_MTA)
#error "Single-threaded COM objects are not properly supported on Windows CE platform, such as the Windows Mobile platforms that do not include full DCOM support. Define _CE_ALLOW_SINGLE_THREADED_OBJECTS_IN_MTA to force ATL to support creating single-thread COM object's and allow use of it's single-threaded COM object implementations. The threading model in your rgs file was set to 'Free' as that is the only threading model supported in non DCOM Windows CE platforms."
#endif

// CSensNetEvents

class ATL_NO_VTABLE CSensNetEvents :
  public CComObjectRootEx<CComSingleThreadModel>,
  public CComCoClass<CSensNetEvents, &CLSID_SensNetEvents>,
  public IDispatchImpl<ISensNetEvents, &IID_ISensNetEvents, &LIBID_StockInfoLib, /*wMajor =*/ 1, /*wMinor =*/ 0>,
  public IDispatchImpl<ISensOnNow, &IID_ISensOnNow, &LIBID_SensEvents>,
  public IDispatchImpl<ISensLogon, &IID_ISensLogon, &LIBID_SensEvents>,
  public IDispatchImpl<ISensLogon2, &IID_ISensLogon2, &LIBID_SensEvents>,
  public IDispatchImpl<ISensNetwork, &IID_ISensNetwork, &LIBID_SensEvents>
{
public:
  CSensNetEvents();

  HRESULT FinalConstruct();
  void FinalRelease();

DECLARE_PROTECT_FINAL_CONSTRUCT()
DECLARE_REGISTRY_RESOURCEID(IDR_SENSNETEVENTS)

BEGIN_COM_MAP(CSensNetEvents)
  COM_INTERFACE_ENTRY(ISensOnNow)
  COM_INTERFACE_ENTRY(ISensLogon)
  COM_INTERFACE_ENTRY(ISensLogon2)
  COM_INTERFACE_ENTRY(ISensNetwork)
  COM_INTERFACE_ENTRY(ISensNetEvents)
  COM_INTERFACE_ENTRY2(IDispatch, ISensNetEvents)
END_COM_MAP()

// ISensNetEvents property
public:
  STDMETHOD (get_OwnerWindow)(OLE_HANDLE* pVal);
  STDMETHOD (put_OwnerWindow)(OLE_HANDLE newVal);

// ISensNetEvents methods
public:
  STDMETHOD (StartMonitor)(OLE_HANDLE hWnd);
  STDMETHOD (StopMonitor)(void);

public:
  // ISensNetwork
  STDMETHOD (ConnectionMade)(BSTR, unsigned long, struct SENS_QOCINFO *);
  STDMETHOD (ConnectionMadeNoQOCInfo)(BSTR, unsigned long);
  STDMETHOD (ConnectionLost)(BSTR, unsigned long);
  STDMETHOD (DestinationReachable)(BSTR,BSTR, unsigned long, struct SENS_QOCINFO *);
  STDMETHOD (DestinationReachableNoQOCInfo)(BSTR, BSTR, unsigned long);

public:
  // ISensOnNow
  STDMETHOD (OnACPower)();
  STDMETHOD (OnBatteryPower)(unsigned long);
  STDMETHOD (BatteryLow)(unsigned long);
  
public:
  // ISensLogon
  STDMETHOD (Logon)(BSTR);
  STDMETHOD (Logoff)(BSTR);
  STDMETHOD (StartShell)(BSTR);
  STDMETHOD (DisplayLock)(BSTR);
  STDMETHOD (DisplayUnlock)(BSTR);
  STDMETHOD (StartScreenSaver)(BSTR);
  STDMETHOD (StopScreenSaver)(BSTR);
  
public:
  // ISensLogon2
  STDMETHOD (Logon)(BSTR, unsigned long);
  STDMETHOD (Logoff)(BSTR, unsigned long);
  STDMETHOD (SessionDisconnect)(BSTR, unsigned long);
  STDMETHOD (SessionReconnect)(BSTR, unsigned long);
  STDMETHOD (PostShell)(BSTR, unsigned long);

private:
  HWND m_hOwnerWnd;
  CComPtr<IEventSystem> m_EventSys;

};

typedef struct tagSensNetSubscribe
{
  const GUID Id;
  LPCSTR Name;
  LPCSTR Method;
  const GUID classId;
} SENSNET_SUBSCRIBE, *PSENSNET_SUBSCRIBE;

extern const __declspec(selectany) SENSNET_SUBSCRIBE SensNet_Subscribe_Array[] =
{
  // ---------------------------------ISensNetwork ---------------------------------
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x00 } },
    "ISensNetwork::ConnectionMade",
    "ConnectionMade",
    { 0xd5978620, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x01 } },
    "ISensNetwork::ConnectionMadeNoQOCInfo",
    "ConnectionMadeNoQOCInfo",
    { 0xd5978620, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x02 } },
    "ISensNetwork::ConnectionLost",
    "ConnectionLost",
    { 0xd5978620, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x03 } },
    "ISensNetwork::DestinationReachable",
    "DestinationReachable",
    { 0xd5978620, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x04 } },
    "ISensNetwork::DestinationReachableNoQOCInfo",
    "DestinationReachableNoQOCInfo",
    { 0xd5978620, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },

  // -----------------------------------ISensOnNow -----------------------------------
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x05 } },
    "ISensOnNow::OnACPower",
    "OnACPower",
    { 0xd5978640, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x06 } },
    "ISensOnNow::OnBatteryPower",
    "OnBatteryPower",
    { 0xd5978640, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x07 } },
    "ISensOnNow::BatteryLow",
    "BatteryLow",
    { 0xd5978640, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  
  // -----------------------------------ISensLogon-----------------------------------
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x08 } },
    "ISensLogon::Logon",
    "Logon",
    { 0xd5978630, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x09 } },
    "ISensLogon::Logoff",
    "Logoff",
    { 0xd5978630, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x0a } },
    "ISensLogon::StartShell",
    "StartShell",
    { 0xd5978630, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x0b } },
    "ISensLogon::DisplayLock",
    "DisplayLock",
    { 0xd5978630, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x0c } },
    "ISensLogon::DisplayUnlock",
    "DisplayUnlock",
    { 0xd5978630, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x0d } },
    "ISensLogon::StartScreenSaver",
    "StartScreenSaver",
    { 0xd5978630, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x0e } },
    "ISensLogon::StopScreenSaver",
    "StopScreenSaver",
    { 0xd5978630, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },

  // -----------------------------------ISensLogon2-----------------------------------
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x0f } },
    "ISensLogon2::Logon",
    "Logon",
    { 0xd5978650, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x10 } },
    "ISensLogon2::Logoff",
    "Logoff",
    { 0xd5978650, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x11 } },
    "ISensLogon2::SessionDisconnect",
    "SessionDisconnect",
    { 0xd5978650, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x12 } },
    "ISensLogon2::SessionReconnect",
    "SessionReconnect",
    { 0xd5978650, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
  {
    { 0x7bf4904f, 0xf525, 0x4173, { 0xb6, 0x10, 0x24, 0x6e, 0x1, 0x99, 0x1a, 0x13 } },
    "ISensLogon2::PostShell",
    "PostShell",
    { 0xd5978650, 0x5b9f, 0x11d1, { 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e} }
  },
};

#define SUBSCRIBE_COUNT (sizeof(SensNet_Subscribe_Array) / sizeof(SENSNET_SUBSCRIBE))

OBJECT_ENTRY_AUTO(__uuidof(SensNetEvents), CSensNetEvents)


 

源文件：

#include "stdafx.h"
#include "SensNetEvents.h"

//IEventSystem* pEventSys = NULL;

CSensNetEvents::CSensNetEvents():
  m_hOwnerWnd(NULL),
  m_EventSys(NULL)
{
  ATLTRACE("CSensNetEvents::CSensNetEvents");

}

HRESULT CSensNetEvents::FinalConstruct()
{
  ATLTRACE("CSensNetEvents::FinalConstruct");

  StopMonitor();

  return S_OK;
}

void CSensNetEvents::FinalRelease()
{
  ATLTRACE("CSensNetEvents::FinalRelease");

}

STDMETHODIMP CSensNetEvents::ConnectionMade(
    BSTR bstrConnection, 
    ULONG ulType, 
    SENS_QOCINFO * lpQOCInfo)
{
  ATLTRACE("CSensNetEvents::ConnectionMade");
  
  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::ConnectionMadeNoQOCInfo(
    BSTR bstrConnection, 
    ULONG ulType)
{
  ATLTRACE("CSensNetEvents::ConnectionMadeNoQOCInfo");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::ConnectionLost(
    BSTR bstrConnection, 
    ULONG ulType)
{
  ATLTRACE("CSensNetEvents::ConnectionLost");
  
  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::DestinationReachable(
    BSTR bstrDestination, 
    BSTR bstrConnection, 
    ULONG ulType, 
    SENS_QOCINFO * lpQOCInfo)
{
  ATLTRACE("CSensNetEvents::DestinationReachable");
  
  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::DestinationReachableNoQOCInfo(
    BSTR bstrDestination, 
    BSTR bstrConnection, 
    ULONG ulType)
{
  ATLTRACE("CSensNetEvents::DestinationReachableNoQOCInfo");
  
  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::Logon(
    BSTR bstrUserName)
{
  ATLTRACE("CSensNetEvents::Logon");
  
  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::Logoff(
    BSTR bstrUserName)
{
  ATLTRACE("CSensNetEvents::Logoff");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::StartShell(
    BSTR bstrUserName)
{
  ATLTRACE("CSensNetEvents::StartShell");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::DisplayLock(
    BSTR bstrUserName)
{
  ATLTRACE("CSensNetEvents::DisplayLock");
  
  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::DisplayUnlock(
    BSTR bstrUserName)
{
  ATLTRACE("CSensNetEvents::DisplayUnlock");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::StartScreenSaver(
    BSTR bstrUserName)
{
  ATLTRACE("CSensNetEvents::StartScreenSaver");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::StopScreenSaver(
    BSTR bstrUserName)
{
  ATLTRACE("CSensNetEvents::StopScreenSaver");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::OnACPower()
{
  ATLTRACE("CSensNetEvents::OnACPower");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::OnBatteryPower(
    unsigned long dwBatteryLifePercent)
{
  ATLTRACE("CSensNetEvents::OnBatteryPower");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::BatteryLow(
    unsigned long dwBatteryLifePercent)
{
  ATLTRACE("CSensNetEvents::BatteryLow");

  return E_NOTIMPL;
}


STDMETHODIMP CSensNetEvents::Logon(
    BSTR bstrUserName,
    unsigned long dwSessionId)
{
  ATLTRACE("CSensNetEvents::Logon");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::Logoff(
    BSTR bstrUserName,
    unsigned long dwSessionId)
{
  ATLTRACE("CSensNetEvents::Logoff");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::SessionDisconnect(
    BSTR bstrUserName,
    unsigned long dwSessionId)
{
  ATLTRACE("CSensNetEvents::SessionDisconnect");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::SessionReconnect(
    BSTR bstrUserName,
    unsigned long dwSessionId)
{
  ATLTRACE("CSensNetEvents::SessionReconnect");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::PostShell(
    BSTR bstrUserName,
    unsigned long dwSessionId)
{
  ATLTRACE("CSensNetEvents::PostShell");

  return E_NOTIMPL;
}

STDMETHODIMP CSensNetEvents::get_OwnerWindow(OLE_HANDLE* pVal)
{
  AFX_MANAGE_STATE(AfxGetStaticModuleState());

  // TODO: Add your implementation code here
  *pVal = (OLE_HANDLE)m_hOwnerWnd;

  return S_OK;
}

STDMETHODIMP CSensNetEvents::put_OwnerWindow(OLE_HANDLE newVal)
{
  AFX_MANAGE_STATE(AfxGetStaticModuleState());

  // TODO: Add your implementation code here
  m_hOwnerWnd = (HWND)newVal;

  return S_OK;
}

STDMETHODIMP CSensNetEvents::StartMonitor(OLE_HANDLE hWnd)
{
  AFX_MANAGE_STATE(AfxGetStaticModuleState());

  ATLTRACE("CSensNetEvents::StartMonitor -- Begin");

  DWORD dwFlags = 0;
  ::IsNetworkAlive((LPDWORD)&dwFlags);

  m_hOwnerWnd = (HWND)hWnd;

  if ( !m_EventSys )
  {
    if ( FAILED(m_EventSys.CoCreateInstance(CLSID_CEventSystem, NULL, CLSCTX_SERVER)) )
    {
      ATLTRACE("FAILED: CSensNetEvents::StartMonitor m_EventSys->CoCreateInstance");
      return E_FAIL;
    }
    ATLTRACE("SUCCEED: CSensNetEvents::StartMonitor m_EventSys->CoCreateInstance");
  }

  int failed = 0;

  for (int i = 0; i < SUBSCRIBE_COUNT; i++, failed++ )
  {
    CComPtr<IEventSubscription> pSubscription;

    if ( FAILED(pSubscription.CoCreateInstance(CLSID_CEventSubscription)) )
    {
      ATLTRACE("FAILED: CSensNetEvents::StartMonitor pSubscription->CoCreateInstance");
      continue;
    }
    
    pSubscription->put_SubscriptionID(CComBSTR(SensNet_Subscribe_Array[i].Id));
    pSubscription->put_EventClassID(CComBSTR(SensNet_Subscribe_Array[i].classId));
    pSubscription->put_SubscriptionName(CComBSTR(SensNet_Subscribe_Array[i].Name));
    pSubscription->put_MethodName(CComBSTR(SensNet_Subscribe_Array[i].Method));
    pSubscription->put_SubscriberInterface((ISensNetEvents*)this);
    pSubscription->put_Enabled(TRUE);

    if ( FAILED(m_EventSys->Store(CComBSTR(PROGID_EventSubscription), pSubscription)) )
    {
      ATLTRACE("FAILED: CSensNetEvents::StartMonitor EventSys->Store");
    }
    else
    {
      ATLTRACE("SUCCEED: CSensNetEvents::StartMonitor EventSys->Store");
      failed--;
    }
  }

  ATLTRACE("CSensNetEvents::StartMonitor -- Completed");

  return failed > 0 ? E_FAIL : S_OK;
}

STDMETHODIMP CSensNetEvents::StopMonitor(void)
{
  AFX_MANAGE_STATE(AfxGetStaticModuleState());

  ATLTRACE("CSensNetEvents::StopMonitor -- Begin");

  if ( !m_EventSys )
  {
    //if ( FAILED(m_EventSys.CoCreateInstance(CLSID_CEventSystem, NULL, CLSCTX_SERVER)) )
    //{
      ATLTRACE("FAILED: CSensNetEvents::StopMonitor m_EventSys->CoCreateInstance");
      return E_FAIL;
    //}
    //ATLTRACE("SUCCEED: CSensNetEvents::StopMonitor m_EventSys->CoCreateInstance");
  }

  int failed = 0;

  for (int i = 0; i < SUBSCRIBE_COUNT; i++)
  {
    CComBSTR bsQuery(TEXT("SubscriptionID="));
    int err;

    bsQuery += CComBSTR(SensNet_Subscribe_Array[i].Id);

    if ( FAILED(m_EventSys->Remove(PROGID_EventSubscription, bsQuery, &err)) )
    {
      ATLTRACE("FAILED: CSensNetEvents::StopMonitor m_EventSys->Remove");
      failed++;
    }
    else
    {
      ATLTRACE("SUCCEED: CSensNetEvents::StopMonitor m_EventSys->Remove");
    }
  }

  ATLTRACE("CSensNetEvents::StopMonitor -- Completed");

  return failed > 0 ? E_FAIL : S_OK;
}


COM注册表注册文件：

HKCR
{
	StockInfo.SensNetEvents.1 = s 'SensNetEvents Class'
	{
		CLSID = s '{0DCC8034-7433-456F-9200-0BF9F3EFBD1F}'
	}
	StockInfo.SensNetEvents = s 'SensNetEvents Class'
	{
		CLSID = s '{0DCC8034-7433-456F-9200-0BF9F3EFBD1F}'
		CurVer = s 'StockInfo.SensNetEvents.1'
	}
	NoRemove CLSID
	{
		ForceRemove {0DCC8034-7433-456F-9200-0BF9F3EFBD1F} = s 'SensNetEvents Class'
		{
			ProgID = s 'StockInfo.SensNetEvents.1'
			VersionIndependentProgID = s 'StockInfo.SensNetEvents'
			ForceRemove 'Programmable'
			InprocServer32 = s '%MODULE%'
			{
				val ThreadingModel = s 'Apartment'
			}
			'TypeLib' = s '{7204EEE7-A379-4A28-93D4-F33151DDECD8}'
		}
	}
}


 

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Codelife
02-08 6670
//本机网络连接类型(成功)#define NET_TYPE_RAS_DIAL_UP_CONNECT_NET 0x01 //上网类型：采用RAS拨号连接上网 0x01#define NET_TYPE_LAN_CONNECT_NET 0x02 //上网类型：采用网卡通过局域网上网 0x02#define NET_TYPE_PROXY_CONNECT_N
信息发布系统架构
weixin_34004576的博客
04-06 1699
1. 术语定义 l 素材：规定格式的文件、网页的URL、第三方exe程序或程序包。 l 节目：一个需要播放的素材。是播放的最小单元。 l 节目单：若干节目按照一定顺序的排列。是发布的最小单元。 l 区域：屏幕中的某一个矩形范围。每一个区域可以有自己独立的节目单。 l 模板：描述了屏幕上若干区域的组合。 l 播放端：最终播放显示内容的播放机、广告一体机、触摸查询机等。数量可以从1台到多台，没有实际...
VS2008代码实现本机网络状态监视纯C++
08-14
纯C++的代码监视，代码只提供参考，简单的展示了网络的连接与断开时的打印信息！
初探.NET判断Windows网络连接之突然断开或连接
Terry's Space
02-09 1519
System.Net.NetworkInformation命名空间下1、NetworkInterface类提供了网络接口的配置和统计信息。如果要获得本地计算机的网络接口（网卡）信息，则使用该类下的GetAllNetworkInterfaces（）方法。如：NetworkInterface[] nics= NetworkInterface.GetAllNetworkInterfaces();nics包括本机的所有网卡对象，包含网卡的名称、ID、连接状态、连接类型等。2、NetworkChange类提供了网络接
sensenet使用
weixin_33981932的博客
11-21 365
gitlab中有http和ssh两种获得方式，我之前的操作一直是在http，只要使用ssh就要输入密码。错误的方式不去理会了。 生成ssh keys后直接使用ssh方式不用输入任何密码，直接使用   正确的做法：1.在gitlab上生成ssh的公钥，在自己的gitlab账号的setting的ssh keys上生成 　　　　　　2.从plateform git clone sensenet的项目 　...
C++使用IsensLogon接受Windows的锁屏与屏保消息
11-07
C++使用IsensLogon接受Windows的锁屏与屏保消息
演示示例程序
01-27
（1）访问本系统，首先进入系统登录页面。也可通过首页的“新用户注册”超链接注册新的用户。 （2）本系统将用户角色分为两种，分别为学生模块和管理模块，学生可以选择课程，管理员可以添加、修改、删除课程。
VXworkes中的sendto接口有时会发送失败，有哪些原因
最新发布
06-19
在VxWorks中，`sendto`接口发送失败可能由以下原因导致，结合系统架构和网络特性分析如下： --- ### **一、核心原因分析** #### 1. **参数无效** - **Socket状态异常**：Socket未初始化、已关闭或未绑定到有效...
矢量网络分析仪 visa 读取
12-27
### 使用 VISA API 读取矢量网络分析仪的数据 为了使用 VISA (Virtual Instrument Software ...当所有的交流活动结束后应当礼貌地断开会话以免占用过多系统资源。 ```python inst.close() # 断开与仪器之间的联系 ```
基于“xxx” Androidx平台的驱动及系统开发 之 触摸板篇
morecrazylove的博客
03-05 2311
触摸IC 驱动适配及遇到的问题并解决 详情
ISensNetwork 示例程序
10-26
ISensNetwork 示例程序，演示如何实现此接口，并注册相关消息。
使用IDeskBand2接口在Windows任务栏创建自己的窗口
perry_peng的专栏
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IDeskBand2 Interface 从MSDN拷贝的关于IDeskBand2说明。查看实现源码。   IDeskBand2 Members CanRenderComposited Indicates the deskband's ability to be displayed as translucent. CloseDW Notifies the
如何监听网络断开的事件
hujianwind的专栏
05-05 2331
问题情景：PC连接Server，可能是消息服务器或者数据库服务器等。
开源一个监听指定IP,端口,并捕获通过此端口消息的类
weixin_34239169的博客
07-18 277
using System; using System.Text;using System.Net.Sockets;using System.Net; namespace myClass{    class clsListenPort    {        #region 使用说明        /*            用途:监听某IP,指定端口,捕获通过此端口的消息。          ...
【LabVIEW技巧】LabVIEW中的错误1
weixin_33798152的博客
03-25 2308
前言前几日，小黑充电学习意外的看到了下面的这个东东。编程许久竟然没有见过这样子的错误枚举，甚为好奇，问刘大后才知道是Error Ring，为此恶补一下LabVIEW中与错误处理相关的内容。错误的生成Error RingError Ring 的说明Error Ring可以直接使用LabVIEW 定义好的一些错误或者自定义的错误，其帮助内容如下。通过选板于Dialog& User Interf...
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