Class TMemBuf

TMemBuf

Support

Supported from 5.0

Description

A stream buffer that uses plain memory for its implementation.

A stream of this type is used by RMemWriteStream and RMemReadStream objects. It also has intermediate buffering capabilities.

This is a seekable stream buffer.

Derivation

MStreamBuf A stream buffer that provides a generic I/O interface for streamed data TMemBuf A stream buffer that uses plain memory for its implementation TStreamBuf Adds buffering capabilities to a stream buffer

Defined in TMemBuf:
Set(), TMemBuf()

Inherited from MStreamBuf:
SeekL(), Close(), DoRelease(), DoSeekL(), DoSynchL(), ERead, EWrite, PushL(), Read(), ReadL(), Release(), SeekL(), SizeL(), Synch(), SynchL(), TMark, TRead, TWrite, TellL(), Write(), WriteL()

Inherited from TStreamBuf:
Avail(), DoReadL(), DoWriteL(), End(), OverflowL(), Ptr(), SetBuf(), SetEnd(), SetPtr(), TArea, UnderflowL()

See also:

• RMemWriteStream
• RMemReadStream

TMemBuf();

Description

Constructs an empty object.

Call Set() before using the object.

void Set(TUint8* aPtr,TUint8* anEnd,TInt aMode=ERead|EWrite);

Description

Sets up the stream to use the specified area of plain memory.

Parameters

TUint8* aPtr The start address for the area of plain memory that hosts the stream and that also acts as the intermediate buffer. TUint8* anEnd The end address for the area of plain memory that hosts the stream and that also acts as the intermediate buffer. The addressed byte is outside the memory area. TInt aMode The mode in which the stream is to be used. It can be used in either or both read and write modes, represented by ERead and EWrite.

See also:

• MStreamBuf::TRead
• MStreamBuf::TWrite