CMidiControllerEventMonitor Class Reference

class CMidiControllerEventMonitor : public CActive

Inherits from

Constructor & Destructor Documentation

CMidiControllerEventMonitor(MMidiControllerEventMonitorObserver &, RMidiControllerCustomCommands &, const CMidiClientUtility &)

CMidiControllerEventMonitor(MMidiControllerEventMonitorObserver &aObserver,
RMidiControllerCustomCommands &aMidiControllerCustomCommands,
const CMidiClientUtility &aParent
)[private]

Parameters

MMidiControllerEventMonitorObserver & aObserver
RMidiControllerCustomCommands & aMidiControllerCustomCommands
const CMidiClientUtility & aParent

~CMidiControllerEventMonitor()

~CMidiControllerEventMonitor()

Member Functions Documentation

ConstructL()

voidConstructL()[private]

DoCancel()

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().

CActive::Cancel

NewL(MMidiControllerEventMonitorObserver &, RMidiControllerCustomCommands &, const CMidiClientUtility &)

CMidiControllerEventMonitor *NewL(MMidiControllerEventMonitorObserver &aMidiObserver,
RMidiControllerCustomCommands &aMidiControllerCustomCommands,
const CMidiClientUtility &aParent
)[static]

Parameters

MMidiControllerEventMonitorObserver & aMidiObserver
RMidiControllerCustomCommands & aMidiControllerCustomCommands
const CMidiClientUtility & aParent

RunError(TInt)

TInt RunError(TIntaError)[private, virtual]

Parameters

TInt aError

RunL()

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

SelfComplete(TInt)

voidSelfComplete(TIntaError)

Parameters

TInt aError

Start()

voidStart()

Start receiving events from the controller.

This can only be called once the controller is open.

Member Data Documentation

RMidiControllerCustomCommands & iMidiControllerCustomCommands

RMidiControllerCustomCommands &iMidiControllerCustomCommands[private]

CMMFMidiEvent * iMidiEvent

CMMFMidiEvent *iMidiEvent[private]

MMidiControllerEventMonitorObserver & iMidiObserver

MMidiControllerEventMonitorObserver &iMidiObserver[private]

const CMidiClientUtility & iParent

const CMidiClientUtility &iParent[private]

TPckgBuf< TInt > iSizeOfEvent

TPckgBuf< TInt >iSizeOfEvent[private]