public abstract void remove_focus_handler (uint handler_id)
Warning: remove_focus_handler is deprecated since 2.9.4.
Remove the handler specified by
handler_id from the list of functions to be executed when this object receives focus events (in or
If you need to track when an object gains or lose the focus, use the state_change "focused" notification instead.
the Component to remove the focus handler from
the handler id of the focus handler to be removed from this