Automating Windows Applications

// Advise.cpp

#include "stdafx.h"
#include "Advise.h"


/////////////////////////////////////////////////////////////////////////////////////////
//	CAdvise 
//
CAdvise::CAdvise(const IID& iidSinkInterface) :
	m_iidSinkInterface(iidSinkInterface), 
	m_dwCookie(0)
{	
}

CAdvise::~CAdvise()
{
	UnadviseToServer();
}

HRESULT CAdvise::AdviseToServer(IUnknown* pUnk, const IUnknown* pUnkEvents)
{
	CComPtr<IConnectionPointContainer> spCPCtr;
	HRESULT hr = pUnk->QueryInterface( IID_IConnectionPointContainer, (void**)&spCPCtr );
	if ( SUCCEEDED(hr) )
	{
		hr = spCPCtr->FindConnectionPoint( m_iidSinkInterface, &m_spCP );
		if ( SUCCEEDED(hr) )
			hr = m_spCP->Advise( (IUnknown*)pUnkEvents, &m_dwCookie );
	}

	return hr;
}

void CAdvise::UnadviseToServer()
{
	if ( m_spCP && 0 < m_dwCookie )
		m_spCP->Unadvise( m_dwCookie );
}