TCustomRadioGroup

type TCustomRadioGroup = class(TCustomGroupBox)

protected

  class procedure WSRegisterClass; override;

Registers this component class with the current WidgetSet.

  procedure UpdateInternalObjectList;

Calls the private UpdateItems method to add or remove radio buttons for the grouped control.

  procedure UpdateAll;

Updates the radio buttons and the number of radio buttons per line for the control.

  procedure InitializeWnd; override;

Creates the visual components used in the radio group.

  procedure UpdateRadioButtonStates; virtual;

UpdateRadioButtonStates including any pending changes.

  procedure ReadState(); override;

Reads the values for the control and checks whether ItemIndex is valid.

  procedure SetItems();

Sets the value for the Items property.

  procedure SetColumns();

Sets the value for the Columns property.

  procedure SetItemIndex();

Sets the value for the ItemIndex property.

  function GetItemIndex;

Gets the value for the ItemIndex property.

  procedure CheckItemIndexChanged; virtual;

Checks whether ItemIndex has been changed since the previous call to the method.

  procedure Notification(); override;

Handles the notification for a components inserted into or deleted from the control.

public

  constructor Create(); override;

Constructor for the class instance.

  destructor Destroy; override;

Destructor for the class instance.

  function CanModify; virtual;

Indicates if modification of the RadioGroup is permitted.

  procedure FlipChildren(); override;

Flips the horizontal display order for child controls.

  function Rows;

Indicates the number of rows in which Items (radio buttons) are held.

  property AutoFill: Boolean; [rw]

Indicates if radio buttons are resized to fill the available space in the control.

  property ItemIndex: Integer; [rw]

The ordinal position in Items for the selected radio button in the group.

  property Items: TStrings; [rw]

Contains the captions for the radio button displayed in the control.

  property Columns: Integer; [rw]

Number of columns used to display radio buttons in the control.

  property ColumnLayout: TColumnLayout; [rw]

Fill direction for columns on the grouped control.

  property OnClick: TNotifyEvent; [rw]

Event called when the selected item is changed.

  property OnItemEnter: TNotifyEvent; [rw]

Event handler signalled when a radio button in the group receives focus.

  property OnItemExit: TNotifyEvent; [rw]

Event handler signalled when a radio button in the group loses focus.

  property OnSelectionChanged: TNotifyEvent; [rw]

Event called when the selected item changes.

end;

TCustomRadioGroup

TCustomRadioGroup is the base type for TRadioGroup.

TCustomGroupBox

The base class for TGroupBox, TRadioGroup and TCheckGroup.

TWinControl

Implements a windowed control which can contain other child controls.

TControl

The base class for visible controls.

TLCLComponent

The base class for LCL components which have an associated widget.

TComponent,IUnknown,IInterfaceComponentReference

TPersistent,IFPObserved

TObject