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

# TIcon

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

TIcon - icons, small images typically associated with applications, controls, etc. Stored in files with .ico extension

## Declaration

Source position: graphics.pp line 1619

`type TIcon = class(TCustomIcon)`
`protected`
`function GetTypeID; override;` |  | GetTypeID - returns Identifier for type of Icon
`procedure HandleNeeded; override;` |  | HandleNeeded - method to signal that a handle is required
`public`
`function ReleaseHandle;` |  | ReleaseHandle - frees the handle that was iused for the Icon
`property Handle: HICON; [rw]` |  | The Operating System Handle used for the Icon
`end;`

## Inheritance

`TIcon` |  | TIcon - icons, small images typically associated with applications, controls, etc. Stored in files with .ico extension
`TCustomIcon` |  | TCustomIcon - base class for TIcon
`TRasterImage` |  | TRasterImage - base class for a number of graphic controls, including TCustomBitmap and TCustomIcon, which use a raster of dots to display graphic information
`TGraphic` |  | TGraphic - Base class for dealing with Graphic images
`TPersistent`
`TObject`

## Description

TIcon reads and writes .ICO file format.

A .ico file typically contains several versions of the same image.

When loading, the largest/most colourful image is loaded as the TBitmap and so can be handled as any other bitmap. Any other versions of the images are available via the Bitmaps property

Writing is not (yet) implemented.

The latest version of this document can be found at lazarus-ccr.sourceforge.net.