NAME

       ttk::checkbutton - On/off widget

SYNOPSIS

       ttk::checkbutton pathName ?options?
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DESCRIPTION

       A  ttk::checkbutton  widget  is  used  to  show  or  change a setting.  It has two states,
       selected and deselected.  The state of the checkbutton may be linked to a Tcl variable.

STANDARD OPTIONS

       -class                -compound            -cursor
       -image                -state               -style
       -takefocus            -text                -textvariable
       -underline            -width

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

WIDGET-SPECIFIC OPTIONS

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

              A Tcl script to execute whenever the widget is invoked.

       Command-Line Name:-offvalue
       Database Name:  offValue
       Database Class: OffValue

              The value to store in the associated  -variable  when  the  widget  is  deselected.
              Defaults to 0.

       Command-Line Name:-onvalue
       Database Name:  onValue
       Database Class: OnValue

              The  value  to  store  in  the  associated  -variable  when the widget is selected.
              Defaults to 1.

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

              The name of a global variable whose value is linked to the widget.  Defaults to the
              widget pathname if not specified.

WIDGET COMMAND

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

       pathname invoke
              Toggles between the selected and deselected states  and  evaluates  the  associated
              -command.  If the widget is currently selected, sets the -variable to the -offvalue
              and deselects the widget; otherwise, sets the -variable to the -onvalue Returns the
              result of the -command.

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  -onvalue,  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.)

STANDARD STYLES

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

SEE ALSO

       ttk::widget(3tk), ttk::radiobutton(3tk), checkbutton(3tk)

KEYWORDS

       widget, button, toggle, check, option