# tui/menu-update Re-evaluate the panel's `get-menu` function and update the menu bar. This is a convenience wrapper around `tui/menu-set`. It resolves `get-menu` in the calling panel's scope, calls it with no arguments, and passes the result to `tui/menu-set`. If `get-menu` is not defined, the call is a no-op and returns `false`. Call this from your app's event loop or whenever application state changes to keep the menu bar in sync. For fully dynamic on-the-fly menus without a `get-menu` function, use `tui/menu-set` directly. ## Syntax 
[tui/menu-update]
## Parameters None. ## Returns `true` if `get-menu` was found, evaluated, and the result was stored successfully. `false` if `get-menu` is not defined, or if the menu could not be parsed. ## Example 
# Define a menu function that reflects current state
def get-menu {||
    set s [deref $state]
    %{ "File" @{ %MenuItem{ label "Save"
                              action "menu-save"
                              shortcut "Ctrl+S" }
                   %MenuItem{ label [if $s~modified "Save As" "Export"]
                              action "menu-save-as"
                              shortcut "" } } }
}

# Call from the event loop to keep menus current
def handle-event {|event|
    # ... process event, mutate state ...
    [tui/menu-update]
}

# Or call unconditionally each frame
[tui start $layout %{
    on-key $handle-key
    on-submit $handle-submit
}]
# In your key handler:
def handle-key {key^string} {
    # ... handle key ...
    [tui/menu-update]   # menu always reflects current state
    false
}
## See also - tui/menu-set — set menus directly from a map
← tui/menu-set
tui/mount-widget →