Gtk.CheckMenuItem

const Gtk = imports.gi.Gtk;

let check_menu_item = new Gtk.CheckMenuItem({
    active: value,
    draw_as_radio: value,
    inconsistent: value,
});
  

A Gtk.CheckMenuItem is a menu item that maintains the state of a boolean value in addition to a Gtk.MenuItem 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.MenuItem. Activating the Gtk.MenuItem toggles the value.