System.Classes.TReader.ReadBoolean

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Delphi

function ReadBoolean: Boolean;

C++

bool __fastcall ReadBoolean(void);

Properties

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

Description

Reads a boolean value-type indicator from the reader object's stream and returns the corresponding boolean value.

ReadBoolean is a helper method used by other reader methods to retrieve a tagged boolean value at the current reader Position. ReadBoolean uses ReadValue to read a value-type indicator:

• If the value-type indicator is vaTrue then ReadBoolean returns True.
• If the value-type indicator is vaFalse, then ReadBoolean returns False.
• If the value-type indicator is not vaTrue or vaFalse, then ReadBoolean raises an Invalid property value exception and returns False.

ReadBoolean advances the stream position after the value-type indicator.

See Also

• System.Classes.TReader.ReadValue
• System.Classes.TValueType
• System.Classes.TReader.Position
• System.Classes.EReadError
• System.Classes.TWriter.WriteBoolean