A generalized boolean.
redoes the items in menu and menu-component that have an
, by calling the
and setting the items. The default value of
in order to ensure that any accelerator associated with any item is up-to-date. When the menu bar contains menus (including sub-menus and menu-components) that have an
may take a relatively long time (tens of milliseconds). If it is called often (for example, each time the user types a character), then it is better to call
This function has been superseded by redisplay-interface, which updates the menu bar, but also updates other state objects such as buttons, list panels and so on.
CAPI Reference Manual - 15 Dec 2011