---
name: "radiobutton"
section: "3tcl"
platform: "linux"
package: "tk-tile"
version: "0.8.2-2.1"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/radiobutton"
---

# radiobutton(3tcl)

Mutually exclusive option widget

## NAME

ttk::radiobutton - Mutually exclusive option widget

## SYNOPSIS

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

## DESCRIPTION

**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

## 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**, **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 \`\`tri-state''  or \`\`indeterminate'' selection.)

## SEE ALSO

widget(n), keynav(n), [checkbutton(n)](/checkbutton/n.md)

## KEYWORDS

widget, button, option