Discussion on related flow objects in Cbuilder

Chapter I. Overview

In Cbuilder, there are several flow objects:

TFileStream

Tmemorystream

Tstringstream

Twinsocketstream

Tblobstream

Tolestream

Tclientblobstream

Tresourcestream

The following are the inheritance relationships of the above categories

TObject

|

Tstream

|

+---------------------------+---------------------------+--------------------+-------------------+------------+

|　　　　　　　　　|　　　　　　　|　　　　　　|　　　　| |

Thandlestream tcustommemorystream twinsocketstream tblobstream tolestream tstringstream

| |

TFileStream Tmemorystream

|

+-------------------------------------------+

| |

Tclientblobstream Tresourcestream

Chapter II Introduction to the properties and methods of flow objects

For more detailed syntax for each property and method see Cbuilder's Help

A Tstream Introduction

Property

Position: Current Position pointer

Size: The volume of the stream, in bytes

Method

CopyFrom: Copy data from one stream to another

READ: Reads a certain byte of data from the stream to the buffer, returns the number of bytes read

Readbuffer: Read a certain byte of data from the stream to the buffer, if incorrect, exception

Readcomponent: Remove a component from the stream

Readcomponentres: Reading a component from the stream in a Windows resource file format

Seek: The current position pointer of the position stream

SetSize: Sets the size of the stream.

Write: Writes a certain byte of data from a buffer to the stream, returning the number of bytes written

WriteBuffer: Writes a certain byte of data from the buffer into the stream, and fails the exception

Writecomponent: Writes a component to the stream

Writecomponentres: Writes a component to the stream in the form of a Windows resource file

Note: You cannot directly create a stream object of type Tstream