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Name
ttk::radiobutton - Mutually exclusive option widget
Synopsis
ttk::radiobutton pathName ?options?
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Description
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
- -class
- -compound -cursor-image
- -state
- -style -takefocus-text
- -textvariable
- -underline -width
See the options manual entry for details on the standard options.
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)
Keywords
widget, button, option