System.Classes.TReader.ReadSignature

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Delphi

procedure ReadSignature;

C++

void __fastcall ReadSignature(void);

Properties

Type	Visibility	Source	Unit	Parent
procedure function	public	System.Classes.pas System.Classes.hpp	System.Classes	TReader

Description

Reads the filer signature from the reader object's associated stream.

ReadSignature is used by several routines to ensure that the file about to be read is a valid component stream. For example, ReadRootComponent, calls ReadSignature before reading its component from the stream. By checking for the signature before loading objects, the reader object can guard against inadvertently reading invalid or corrupted data.

The signature is a four-character sequence.

See Also

• ReadComponents

• ReadRootComponent