iopcshutdown_imp.cpp

来自「DCOM 上位机和嵌入式系统通信」· C++ 代码 · 共 90 行

#include "stdafx.h"
#include "CLIENT.h"
#include "iopcshutdown_imp.h"

IOPCShutdown_imp:: IOPCShutdown_imp()
{
	mRefCount = 0;
}

///////////////////////////////////////
//
///////////////////////////////////////
IOPCShutdown_imp:: ~IOPCShutdown_imp()
{
}


///////////////////////////////////////
//
///////////////////////////////////////
STDMETHODIMP_(ULONG) IOPCShutdown_imp:: AddRef( void)
{
	return ++mRefCount;
}



///////////////////////////////////////
//
///////////////////////////////////////
STDMETHODIMP_(ULONG) IOPCShutdown_imp:: Release( void)
{
	ULONG currentCount = --mRefCount; 

	// If no references left for this object
	if ( currentCount == 0)
	{
		// Then delete this group.
		delete this;
	}
	return currentCount;
}


///////////////////////////////////////
//
///////////////////////////////////////
STDMETHODIMP IOPCShutdown_imp:: QueryInterface( REFIID iid, LPVOID* ppInterface)
{
	if ( ppInterface == NULL)
		return E_INVALIDARG;

	if ( iid == IID_IUnknown )
		*ppInterface = (IUnknown*) this;

	else if ( iid == IID_IOPCShutdown)
	{
		*ppInterface = (IUnknown*) this;
	}
	else
	{
		*ppInterface = NULL;
	}
	
	if ( *ppInterface == NULL)
		return E_NOINTERFACE;

	AddRef();
	return S_OK;
}


///////////////////////////////////////
//
///////////////////////////////////////
STDMETHODIMP IOPCShutdown_imp:: ShutdownRequest(
	LPCWSTR szReason
)
{
  CString szMess = "Reason unknown !!";
	if(szReason)
    szMess.Format("Reason is : %ls\n", szReason);

  MessageBox(NULL,szMess,"Server ShutDown !",MB_OK|MB_ICONEXCLAMATION);

	AfxGetApp()->m_pMainWnd->PostMessage(WM_COMMAND,ID_SERVER_DISCONNECT, 0);

	return S_OK;
}