Create is the Constructor for the object instance. 

Create calls the inherited Create method. When AOwner is a TIdMessage instance, Create sets the MIMEBoundary for the decoder to the MIMEBoundary in the TIdMessage that owns the decoder class instance. 

Create updates BodyEncoded to True when the TIdMessage owner has a non-blank ContentTransferEncoding containing a value other than '7bit', '8bit', or 'binary'.

TIdMessageDecoderMIME.Create 

TIdMessageDecoderMIME.MIMEBoundary 

TIdMessageDecoderMIME.BodyEncoded 

TIdMessage.ContentTransferEncoding 

TIdMessage.MIMEBoundary