[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Classes' (#rtl)

TStream

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Base class for streams.

Declaration

Source position: classesh.inc line 933

type TStream = class(TObject)

public

  function Read(); virtual; overload;

  

Reads data from the stream to a buffer and returns the number of bytes read.

  function Write(); virtual; overload;

  

Writes data from a buffer to the stream and returns the number of bytes written.

  function Seek();

  

Sets the current position in the stream

  procedure ReadBuffer();

  

Reads data from the stream to a buffer

  procedure WriteBuffer();

  

Writes data from a buffer to the stream

  function CopyFrom();

  

Copy data from one stream to another

  function ReadComponent();

  

Reads component data from a stream

  function ReadComponentRes();

  

Reads component data and resource header from a stream

  procedure WriteComponent();

  

Write component data to the stream

  procedure WriteComponentRes();

  

Write resource header and component data to a stream

  procedure WriteDescendent();

  

Write descendent of a component

  procedure WriteDescendentRes();

  

Write descendent of a component as resource

  procedure WriteResourceHeader();

  

Write resource header to the stream

  procedure FixupResourceHeader();

  

Not implemented in FPC

  procedure ReadResHeader;

  

Read a resource header from the stream.

  function ReadByte;

  

Read a byte from the stream and return its value.

  function ReadWord;

  

Read a word from the stream and return its value.

  function ReadDWord;

  

Read a DWord from the stream and return its value.

  function ReadQWord;

  

Read a QWord value from the stream and return its value

  function ReadAnsiString;

  

Read an ansistring from the stream and return its value.

  procedure WriteByte();

  

Write a byte to the stream.

  procedure WriteWord();

  

Write a word to the stream.

  procedure WriteDWord();

  

Write a DWord to the stream.

  procedure WriteQWord();

  

Write a QWord value to the stream

  procedure WriteAnsiString(); virtual;

  

Write an ansistring to the stream.

  property Position: Int64; [rw]

  

The current position in the stream.

  property Size: Int64; [rw]

  

The current size of the stream.

end;

Inheritance

TStream

  

Base class for streams.

|

TObject

  

Base class of all classes.

Description

TStream is the base class for all streaming classes. It defines methods for reading, writing from and to streams, as well as functions to determine the size of the stream as well as the current position of the stream.

Descendant classes such as TMemoryStream or TFileStream then override these methods to write streams to memory or file.

See also

TMemoryStream

  

Standard implementation of a stream that stores its data in memory

TFileStream

  

Stream that stores its data in a named file on disk.

TStringStream

  

Stream that stores its data in a string.


Documentation generated on: May 14 2021