gtk:menu-item, gtk:bin, gtk:container, gtk:widget, gtk:buildable, gtk:activatable, gobject:object, common-lisp:standard-object, common-lisp:t

A gtk:check-menu-item widget is a menu item that maintains the state of a boolean value in addition to a gtk:menu-item usual role in activating application code.

A check box indicating the state of the boolean value is displayed at the left side of the gtk:menu-item widget. Activating the gtk:menu-item widget toggles the value.

menuitem
├── check.left
╰── <child>    

The gtk:check-menu-item implementation has a main CSS node with name menuitem, and a subnode with name check, which gets the .left or .right style class.

indicator-size

The indicator-size style property of type :int (Read)
Size of check or radio indicator.
Warning: The indicator-size style property has been deprecated since version 3.20 and should not be used in newly written code. Use the standard min-width CSS property on the check or radio nodes. The value of this style property is ignored.
Allowed values: >= 0
Default value: 16

The "toggled" signal

lambda (item)    :run-first      

The signal is emitted when the state of the check box is changed. A signal handler can use the gtk:check-menu-item-active function to discover the new state.

item

The sym:check-menu-item widget which received the signal.