Class: TCardStream

 TStream ----+
             |
        TCardStream

Description:
TCardStream is a TStream descendant that can be used to access (binary) files on the BasicCard.
It will raise an ECardStreamError if something goes wrong.

See Also:
TStream documentation in Delphi help files

Unit:
ZCDCI1 (ZCDCI1.pas)

Constructors:

constructor Create(Card: TBasicCard; FileName: String; Mode: Byte);: Opens a file on the BasicCard

Properties:

property FileNum: Word read fFileNum;

Methods:

destructor Destroy; override;: Closes the file
function EOF: Boolean;: Returns true if EOF has been reached
function Read(var Buffer; Count: Longint): Longint; override;: Reads from file
function Seek(Offset: Longint; Origin: Word): Longint; override;: Sets new file position
function Write(const Buffer; Count: Longint): Longint; override;: Writes to file

constructor Create(Card: TBasicCard; FileName: String; Mode: Byte);

Opens a file on the BasicCard

Parameters

Card : The initialised and connected BasicCard object

FileName : The name of the file

Mode : The file mode (just read and/or write, access is always set to binary

property FileNum: Word read fFileNum;

destructor Destroy; override;

Closes the file

function EOF: Boolean;

Returns true if EOF has been reached

function Read(var Buffer; Count: Longint): Longint; override;

Reads from file

See Also

TStream.Read documentation

function Seek(Offset: Longint; Origin: Word): Longint; override;

Sets new file position

See Also

TStream.Seek documentation

function Write(const Buffer; Count: Longint): Longint; override;

Writes to file

See Also

TStream.Write documentation