Class CCameraStatusWatch

class CCameraStatusWatch : public CActive;

Description

An active object class implemented by Symbian and used to subscribe for the updates in the Properties, retrieve the Properties and forward the notification to the client.

Note: Serialized part of the ECam implementation is assumed to define the Properties and publish them whenever there is change in the reserve status.

Derivation

• CBase - Base class for all classes to be instantiated on the heap.

• CActive - The core class of the active object abstraction.

• CCameraStatusWatch - An active object class implemented by Symbian and used to subscribe for the upda...

Members

Defined in CCameraStatusWatch:

• DoCancel()Cancels any outstanding subscription.
• RunL()Re-issues the subscription notice. Checks the updated value of the Property and ...

Inherited from CActive:

• CActive(TInt)Constructs the active object with the specified priority.
• Cancel()Cancels the wait for completion of an outstanding request.
• Deque()Removes the active object from the active scheduler's list of active objects.
• EPriorityHighA priority higher than EPriorityUserInput.
• EPriorityIdleA low priority, useful for active objects representing background processing.
• EPriorityLowA priority higher than EPriorityIdle but lower than EPriorityStandard.
• EPriorityStandardMost active objects will have this priority.
• EPriorityUserInputA priority higher than EPriorityStandard; useful for active objects handling use...
• Extension_(TUint,TAny *&,TAny *)Extension function
• IsActive()constDetermines whether the active object has a request outstanding.
• IsAdded()constDetermines whether the active object has been added to the active scheduler's li...
• Priority()constGets the priority of the active object.
• RunError(TInt)Handles a leave occurring in the request completion event handler CActive::RunL(...
• SetActive()Indicates that the active object has issued a request and that it is now outstan...
• SetPriority(TInt)Sets the priority of the active object.
• TPriorityDefines standard priorities for active objects.
• iStatusThe request status associated with an asynchronous request.

Inherited from CBase:

• Delete(CBase *)Deletes the specified object.
• operator new(TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TAny *)Initialises the object to binary zeroes.
• operator new(TUint,TLeave)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TLeave,TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TUint)Allocates the object from the heap and then initialises its contents to binary z...

private: virtual void RunL();

Description

Re-issues the subscription notice. Checks the updated value of the Property and notifies the client via MReserveObserver.

Note: Serialized part of the ECam implementation is assumed to define the Properties and publish them whenever there is change in the reserve status.

private: virtual void DoCancel();

Description

Cancels any outstanding subscription.