void pcb_layersel_gui_init_ev(rnd_hidlib_t *hidlib, void *user_data, int argc, rnd_event_arg_t argv[]);
void pcb_layersel_vis_chg_ev(rnd_hidlib_t *hidlib, void *user_data, int argc, rnd_event_arg_t argv[]);
void pcb_layersel_stack_chg_ev(rnd_hidlib_t *hidlib, void *user_data, int argc, rnd_event_arg_t argv[]);
