Unit 'idea'	Package
[Overview][Constants][Types][Classes][Procedures and functions][Index]	[#fcl]

TIDEADeCryptStream.Seek

Set position on the stream.

Declaration

Source position: idea.pp line 114

public function TIDEADeCryptStream.Seek(

const Offset: Int64;

Origin: TSeekOrigin

):Int64; override;

Arguments

`Offset`		Offset to apply to the position in the stream.
`Origin`		Origin from where `Offset` should be counted.

Function result

New position in the stream.

Description

Seek will only work on a forward seek. It emulates a forward seek by reading and discarding bytes from the input stream. The TIDEADecryptStream stream tries to provide seek capabilities for the following limited number of cases:

Origin=soFromBeginning: If Offset is larger than the current position, then the remaining bytes are skipped by reading them from the stream and discarding them.
Origin=soFromCurrent: If Offset is zero, the current position is returned. If it is positive, then Offset bytes are skipped by reading them from the stream and discarding them.

Errors