Unregister an event notification.
    @param p_event_manager: the event manager.
    @param i_event_type: the desired event to which we want to unregister.
    @param f_callback: the function to call when i_event_type occurs.
    @param p_user_data: user provided data to carry with the event.

def libvlc_event_detach(p_event_manager, i_event_type, f_callback, p_user_data):
    '''Unregister an event notification.
    @param p_event_manager: the event manager.
    @param i_event_type: the desired event to which we want to unregister.
    @param f_callback: the function to call when i_event_type occurs.
    @param p_user_data: user provided data to carry with the event.
    '''
    f = _Cfunctions.get('libvlc_event_detach', None) or \
        _Cfunction('libvlc_event_detach', ((1,), (1,), (1,), (1,),), None,
                    None, EventManager, ctypes.c_uint, Callback, ctypes.c_void_p)
    return f(p_event_manager, i_event_type, f_callback, p_user_data)