Represents a registered decoder class and detects the decoder boundary marker in a message part.

TIdMessageDecoderInfoMIME = class(TIdMessageDecoderInfo)

TIdMessageDecoderInfoMIME is a TIdMessageDecoderInfo descendant that implements the specifics of a registered decoder class for MIME-encoded RFC message parts. TIdMessageDecoderInfoMIME reimplements methods of the ancestor class to detect the presence of a MIMEBoundary in the associated message, and create a new MIME decoder instance for the message.

Detects a MIME boundary and creates a decoder class for the associated document.

function CheckForStart(ASender: TIdMessage; ALine: string): TIdMessageDecoder; override;

Message to associate with a decoder class.

Line from a message header to check for a MIME boundary.

TIdMessageDecoder - Decoder class instance for the message.

CheckForStart is an overridden TIdMessageDecoder function in TIdMessageDecoderInfoMIME that is used to examine a line from an RFC message header for a MIME boundary marker. When the MIMEBoundary in ASender is detected in ALine, a new instance of the decoder class is created and associated with the messge ASender.