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

# TListColumns

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

TListColumns - a collection of Items of type TListColumn (the columns appearing in a multi-column list)

## Declaration

Source position: comctrls.pp line 914

`type TListColumns = class(TCollection)`
`protected`
`function GetOwner; override;`
`public`
`constructor Create();` |  | Create - constructor for TListColumns: sets ownership then calls inherited Create
`destructor Destroy; override;` |  | Destroy - destructor for TListColumns: calls inherited destructor
`procedure Update(); override;` |  | Update checks if update is in fact required, then calls inherited method
`function Add;` |  | Add calls inherited method, then adjusts state flags
`property Owner: TCustomListView; [r]` |  |
`property Items: TListColumn; default; [rw]` |  |
`procedure Assign(); override;` |  | Assign checks that source is of correct type, then adds new columns and copies items from source into them; otherwise calls inherited Assign which probably raises an exception
`end;`

## Inheritance

`TListColumns` |  | TListColumns - a collection of Items of type TListColumn (the columns appearing in a multi-column list)
`TCollection`
`TPersistent`
`TObject`

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