Gtk.MenuShell::move-selected

function callback(menu_shell, distance:Number, ):Boolean;

The ::move-selected signal is emitted to move the selection to another item.

Since 2.12

menu_shell: instance of Gtk.MenuShell that is emitting the signal
distance: +1 to move to the next item, -1 to move to the previous
Returns: true to stop the signal emission, false to continue