CTsPropertyListener Class Reference

class CTsPropertyListener : public CActive

Class to get notifications about changes to a P&S property.

Inherits from

Constructor & Destructor Documentation

CTsPropertyListener(TUid, TUint, MTsPropertyChangeObserver &)

MTsPropertyChangeObserver &aObserver

Constructor. Starts listening for the property with the given category/key.


TUid aCategory
TUint aKey
MTsPropertyChangeObserver & aObserver




Member Functions Documentation


voidDoCancel()[private, virtual]

Implements cancellation of an outstanding request.

This function is called as part of the active object's Cancel().

It must call the appropriate cancel function offered by the active object's asynchronous service provider. The asynchronous service provider's cancel is expected to act immediately.

DoCancel() must not wait for event completion; this is handled by Cancel().



TInt RunError(TIntaError)[private, virtual]


TInt aError


voidRunL()[private, virtual]

Handles an active object's request completion event.

A derived class must provide an implementation to handle the completed request. If appropriate, it may issue another request.

The function is called by the active scheduler when a request completion event occurs, i.e. after the active scheduler's WaitForAnyRequest() function completes.

Before calling this active object's RunL() function, the active scheduler has:

1. decided that this is the highest priority active object with a completed request

2. marked this active object's request as complete (i.e. the request is no longer outstanding)

RunL() runs under a trap harness in the active scheduler. If it leaves, then the active scheduler calls RunError() to handle the leave.

Note that once the active scheduler's Start() function has been called, all user code is run under one of the program's active object's RunL() or RunError() functions.

CActiveScheduler::Start CActiveScheduler::Error CActiveScheduler::WaitForAnyRequest TRAPD

Member Data Documentation

TUid iCategory

TUid iCategory[private]

TUint iKey

TUint iKey[private]

MTsPropertyChangeObserver & iObserver

MTsPropertyChangeObserver &iObserver[private]

RProperty iProperty

RProperty iProperty[private]