void _tapped_cb(Etk_Object *object, void *data)
{
   printf("You just tapped a dynamically loaded widget!\n");
}

Etk_Bool _delete_event_cb()
{
   printf("Sionara!\n");
   etk_main_quit();
   return ETK_TRUE;
}

int main(int argc, char **argv)
{   
   Etk_Widget *window;
   Etk_Widget *tap_button;
   
   etk_init(&argc, &argv);
   
   if (!etk_widget_custom_load("tap_button"))
   {
      printf("We're sorry, but we couldnt find the tap button widget.\n"
             "Please install it from http://extra.etk.org/tap_button and "
             "try again.\n");
      goto SHUTDOWN;
   }
   
   window = etk_window_new();
   etk_window_title_set(ETK_WINDOW(window), "Etk - Tap Button");
   etk_signal_connect("delete_event", ETK_OBJECT(window), 
                      ETK_CALLBACK(_delete_event_cb), NULL);
   
   tap_button = etk_tap_button_new();
   etk_button_label_set(ETK_BUTTON(tap_button), "Tap me!");
   etk_signal_connect("clicked", ETK_OBJECT(tap_button),
                      ETK_CALLBACK(_tapped_cb), NULL);
   
   etk_container_add(ETK_CONTAINER(window), tap_button);
   etk_widget_show_all(window);
   
   etk_main();
   
SHUTDOWN:   
   etk_shutdown();
   
   return 1;
}