---
name: "ttk_radiobutton"
section: "n"
platform: "macos"
package: "tcl"
version: "152"
release: "macOS 26.5"
platforms: ["linux", "macos"]
url: "https://new.carta.tech/ttk_radiobutton/n"
---

# ttk\_radiobutton(n)

Mutually exclusive option widget

## NAME

ttk::radiobutton - Mutually exclusive option widget

## SYNOPSIS

**ttk::radiobutton** *pathName* ?*options*?

## DESCRIPTION

**ttk::radiobutton** widgets are used in groups to show or change a set of mutually-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. -class	-compound	-cursor -image	-state	-style -takefocus	-text	-textvariable -underline	-width

## WIDGET-SPECIFIC OPTIONS

\[**-command** *command Command*\] A Tcl script to evaluate whenever the widget is invoked. \[**-value** *Value Value*\] The value to store in the associated *-variable*  when the widget is selected.  \[**-variable** *variable Variable*\] The name of a global variable whose value is linked to the widget. Default value is **::selectedButton**.

## WIDGET COMMAND

In addition to the standard  **cget**, **configure**, **identify**, **instate**, and **state**  commands, radiobuttons support the following additional widget commands:

- *pathname* **invoke**

  Sets the **-variable** to the **-value**, selects the widget, and evaluates the associated **-command**.   Returns the result of the **-command**, 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 or selection.)

## STANDARD STYLES

**Ttk::radiobutton** widgets support the **Toolbutton** style in all standard themes, which is useful for creating widgets for toolbars.

## SEE ALSO

ttk::widget(n), ttk::checkbutton(n), [radiobutton(n)](/radiobutton/n.md)

## KEYWORDS

widget, button, option