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

TCustomRadioGroup

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

TCustomRadioGroup: the base type for TRadioGroup

Declaration

Source position: extctrls.pp line 655

type TCustomRadioGroup = class(TCustomGroupBox) end;

protected

  class procedure WSRegisterClass; override;

  

Registers this component class with the current WidgetSet.

  procedure UpdateInternalObjectList;

  procedure UpdateAll;

  procedure InitializeWnd; override;

  

Copies cached control properties to the just created widget.

  procedure UpdateRadioButtonStates; virtual;

  

UpdateRadioButtonStates including implementing any pending changes

  procedure ReadState(); override;

  

  procedure SetItems();

  

SetItems - specifies the strings that form the Items of the group

  procedure SetColumns();

  

SetColumns - specifies the number of columns for displaying the items

  procedure SetItemIndex();

  

SetItemIndex - specifies an index for an item

  function GetItemIndex;

  

GetItemIndex - returns an index for an item

  procedure CheckItemIndexChanged; virtual;

  

CheckItemIndexChanged - find out if the index for an item has changes

public

  constructor Create(); override;

  

Create - constructor for TCustomRadioGroup: calls inherited Create, then sets list of buttons, and initialises layout and sizing properties

  destructor Destroy; override;

  

Destroy - destructor for TCustomRadioGroup: frees items and buttons, then calls inherited Destroy

  function CanModify; virtual;

  

CanModify - if True, modification of the RadioGroup is permitted

  procedure FlipChildren(); override;

  function Rows;

  

Rows - the number of rows in which Items (radio boxes) are held

  property AutoFill: Boolean; [rw]

  

AutoFill - whether responses to Items should automatically be filled in

  property ItemIndex: Integer; [rw]

  

The Index value in the list of Items (a stringlist with the names of the selections for radio buttons)

  property Items: TStrings; [rw]

  

Items - a string list containing the captions for the radio boxes

  property Columns: Integer; [rw]

  

Columns - the number of columns in which the Items (radio buttons) are to be arranges

  property ColumnLayout: TColumnLayout; [rw]

  

ColumnLayout - HorizontalThenVertical or vice versa

  property OnClick: TNotifyEvent; [rw]

  

Event called when the selected item changes

  property OnSelectionChanged: TNotifyEvent; [rw]

  

Event called when the selected item changes

Inheritance

TCustomRadioGroup

  

TCustomRadioGroup: the base type for TRadioGroup

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TCustomGroupBox

  

The base class for TGroupBox, TRadioGroup and TCheckGroup.

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TWinControl

  

The base class for controls which can contain other (child) controls.

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TControl

  

The base class for visible controls.

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TLCLComponent

  

The base class for LCL components associated with widgets.

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TComponent

?

TObject

Description

A group of related but mutually exclusive radio buttons, selectable by the user.

This class defines Items, where the captions of the individual radio boxes are stored, Rows and Columns for arranging the radio boxes, and ColumnLayout to determine whether the data are arranged down the columns first, or across the rows first.

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