Cisco Cisco Computer Telephony Integration Option 9.0 Developer's Guide

Ensure that the agent object is set to NULL in the session before you Release the session object. For 
example, whenever your application is exiting and you are disconnecting the session object (e.g. 
when the user closes your application's window) you should do something similar to the code below:

if (m_ctiSession)

{

m_ctiSession->Disconnect();

// stop all events for this session

int nRetVal =

 

m_pctiSession->RemoveAllInOneEventListener((IAllInOne *)

 

m_pmyEventSink);

//The application is closing, remove current agent from session

CAgent * pNullAgent = NULL;

m_Session->SetAgent(*pNullAgent);

m_Session->Release();

m_Session = NULL;

}

if(m_ctiAgent)

{

m_ctiAgent->Release();

m_ctiAgent = NULL;

}

if (m_pmyEventSink)

{

m_pmyEventSink->Release();

m_pmyEventSink = NULL;

}

It is critical that you design an Agent Mode desktop application to be able to store all the calls on the 
specific device, in order to do the following:

Apply incoming events to the correct call

Select the correct call on which to make method calls (i.e. telephony requests)

It is not necessary to maintain a set of Call Objects in order to do this. Instead, the application could 
store the string UniqueObjectID of each call (keyword CTIOS_UNIQUEOBJECTID). 
CTIOS_UNIQUEOBJECTID is always included in the args parameter for each call event. The actual 
Call Object can be obtained with the Session object's GetObjectFromObjectID() method in order to 
make a method call.