TCustomRadioGroup

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

TCustomRadioGroup: the base type for TRadioGroup

Declaration

Source position: extctrls.pp line 866

`type TCustomRadioGroup = class(TCustomGroupBox)`

`class procedure WSRegisterClass; override;`		`WSRegisterClass` - Register this Class for the current Widget Set
`protected`
`procedure Loaded; override;`
`procedure InitializeWnd; override;`		`InitializeWnd` - initialise the window for this control
`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
`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 Handler for mouse click
`end;`

Inheritance

`TCustomRadioGroup`		`TCustomRadioGroup:` the base type for `TRadioGroup`
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`TCustomGroupBox`		`TCustomGroupBox` - the base class for `TGroupBox`, `TRadioGroup` and `TCheckGroup`
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`TWinControl`
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`TControl`
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`TLCLComponent`		`TLCLComponent` - base class for LCL components
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`TComponent,IUnknown,IInterfaceComponentReference`
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`TPersistent`
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`TObject`

Description

TCustomRadioGroup: the base type for TRadioGroup

A group of related but mutually exclusive radio buttons, requiring the user to select one af a set of alternatives

This class defines Items, where the captions for 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.

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