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