Tile radiobutton Table of Contents



ttk::radiobutton - Mutually exclusive option widget


ttk::radiobutton pathName ?options?


radiobutton widgets are used in groups to show or change a set of mutu-ally-exclusive options. Radiobuttons are linked to a Tcl variable, and have an associated value; when a radiobutton is clicked, it sets the variable to its associated value.

Standard Options

-compound -cursor-image
-style -takefocus-text
-underline -width

See the options manual entry for details on the standard options.


Command-Line Name:-command
Database Name: command
Database Class: Command

A Tcl script to evaluate whenever the widget is invoked.

Command-Line Name:-value
Database Name: Value
Database Class: Value

The value to store in the associated -variable when the widget is selected.

Command-Line Name:-variable
Database Name: variable
Database Class: Variable

The name of a global variable whose value is linked to the wid-get. Default value is ::selectedButton.

Widget Command

In addition to the standard cget, configure, instate, and state com-mands, radiobuttons support the following additional widget commands:

pathname invoke
Sets the -variable to the -value, selects the widget, and evalu-ates the associated -command. Returns the result of the -com-mand, or the empty string if no -command is specified.

Widget States

The widget does not respond to user input if the disabled state is set. The widget sets the selected state whenever the linked -variable is set to the widget’s -value, and clears it otherwise. The widget sets the alternate state whenever the linked -variable is unset. (The alternate state may be used to indicate a ‘‘tri-state’’ or ‘‘indeterminate’’ selection.)

See Also

widget(n) , keynav(n) , checkbutton(n)


widget, button, option

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