![](../../Home/Icons/Home.gif)
![](../icons/UpCNM.gif)
![](../icons/CNMContext.gif)
![](../../Home/Icons/Search.gif)
Taxonomy Categories:
Member Functions:
Interface Category:
API.
Inherits From:
TInterest
Inherited By:
None.
Purpose:
TTelephoneInterest is a derived class of TInterest that permits clients to request notification of certain telephony events affecting a particular telephone line or handset. These events include changes in hook status, ring indications from incoming calls, and the arrival of remotely generated digit strings.
Instantiation:
Allocate on the heap or the stack. Allocated on heap by telephony classes.
Deriving Classes:
Do not derive classes from TTelephoneInterest.
Concurrency:
Not multithread safe.
Resource Use:
No special requirements.
- TTelephoneInterest (const TTelephoneInterest &)
- TTelephoneInterest ()
Interface Category:
API.
Purpose:
- Copy constructor.
- Default constructor.
Calling Context:
- Called to copy an object. Called by The Notification Framework only. Not to be called by clients.
- Called for streaming and assignment. Called by The Notification Framework only. Not to be called by clients.
Parameters:
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
Clients should create instances of this class by calling the Create Interest functions provided by TTelephoneLineHandle and TTelephoneHandsetHandle.
virtual ~ TTelephoneInterest ()
Interface Category:
API.
Purpose:
Destructor.
Calling Context:
Called to destroy an object.
Parameters:
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
TTelephoneInterest & operator =(const TTelephoneInterest &)
Interface Category:
API.
Purpose:
Assignment operator.
Calling Context:
Called by Notification Framework when an object is assigned to another compatible object.
Parameters:
Return Value:
A non-const reference to the left-hand side object.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
virtual long Hash () const
Interface Category:
API.
Purpose:
Generates a hash value.
Calling Context:
Called by Collection classes to generate a hash value.
Parameters:
Return Value:
The numeric value of the hash.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
virtual TStream & operator <<= (TStream & fromWhere)
Interface Category:
API.
Purpose:
Stream-in operator.
Calling Context:
Called by Notification Framework to stream in data.
Parameters:
- TStream & fromWhere -The stream the object streams itself in from.
Return Value:
Returns a reference to the stream the object streams itself in from.
Exceptions:
Throws TInvalidVersionError if the versions don't match.
Concurrency:
Not multithread safe.
Other Considerations:
None.
virtual TStream & operator >>=(TStream & toWhere) const
Interface Category:
API.
Purpose:
Stream-out operator.
Calling Context:
Called by Notification Framework to stream out data.
Parameters:
- TStream & toWhere -The stream the object streams itself out to.
Return Value:
Returns a reference to the stream the object streams itself out to.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Click the icon to mail questions or corrections about this material to Taligent personnel.
Copyright©1995 Taligent,Inc. All rights reserved.