[Overview][Constants][Types][Classes][Procedures and functions][Variables] | Reference for unit 'Classes' (#fcl)

# TWriterProc

Writer procedure used by DefineProperties

## Declaration

`type TWriterProc = procedure(`
`Writer: TWriter`
`) of object;`

## Description

The TWriterProc writer procedure is a callback procedure which will be used by a TPersistent descendent to write user properties from a stream during the streaming process. The Writer argument is the writer object which can be used write properties to the stream.