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

# TComponent.DefineProperties

Defines fake top,left properties for handling in the IDE.

## Declaration

`protected procedure TComponent.DefineProperties(`
`Filer: TFiler`
`); override;`

## Description

DefineProperties overrides the standard TPersistent.DefineProperties to store the top/left properties used to display an icon for a non-visual component in an IDE.

## See also

TPersistent.DefineProperties |  | Declare non-published properties that need to be streamed.