CPageBuffer Class Reference

class CPageBuffer : public CActive

Inherits from

Constructor & Destructor Documentation

CPageBuffer(CPrinterPort *, TInt)

CPageBuffer(CPrinterPort *aPrinterPort,
TIntaGranularity
)[private]

Parameters

CPrinterPort * aPrinterPort
TInt aGranularity

~CPageBuffer()

IMPORT_C~CPageBuffer()

Member Functions Documentation

AddBytesL(const TDesC8 &)

IMPORT_C voidAddBytesL(const TDesC8 &aDes)

Parameters

const TDesC8 & aDes

CloseWriteStream()

IMPORT_C voidCloseWriteStream()

ConstructL()

voidConstructL()[private]

CreateWriteStreamL()

IMPORT_C RWriteStream &CreateWriteStreamL()

DoCancel()

voidDoCancel()[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(CPrinterPort *)

IMPORT_C CPageBuffer *NewL(CPrinterPort *aPrinterPort)[static]

Parameters

CPrinterPort * aPrinterPort

NewL(CPrinterPort *, TInt)

IMPORT_C CPageBuffer *NewL(CPrinterPort *aPrinterPort,
TIntaGranularity
)[static]

Parameters

CPrinterPort * aPrinterPort
TInt aGranularity

Queue()

voidQueue()[private]

RunL()

voidRunL()[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

StartFlush(TRequestStatus &)

IMPORT_C voidStartFlush(TRequestStatus &aRequestStatus)

Parameters

TRequestStatus & aRequestStatus

Member Data Documentation

CBufSeg * iBuffer

CBufSeg *iBuffer[private]

TInt iGranularity

TInt iGranularity[private]

CPrinterPort * iPrinterPort

CPrinterPort *iPrinterPort[private]

TPtr8 iPtr

TPtr8 iPtr[private]

TRequestStatus * iRequestStatus

TRequestStatus *iRequestStatus[private]

TInt iWritePos

TInt iWritePos[private]

RBufWriteStream iWriteStream

RBufWriteStream iWriteStream[private]

CBufSeg * iWriteStreamBuffer

CBufSeg *iWriteStreamBuffer[private]