#include <Elementary.h>
static void
_btn_clicked_cb(void *data, Evas_Object *obj, void *ev)
{
   static int loaded = 1;
   if (loaded)
   else
   loaded = 1 - loaded;
}
EAPI_MAIN int
elm_main(int argc, char *argv[])
{
   Evas_Object *win, *box, *btn;
   evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_show(box);
   elm_object_text_set(btn, "Button 1");
   evas_object_show(btn);
   evas_object_smart_callback_add(btn, "clicked", _btn_clicked_cb, NULL);
   elm_object_text_set(btn, "Button 2");
   evas_object_show(btn);
   evas_object_smart_callback_add(btn, "clicked", _btn_clicked_cb, NULL);
   elm_object_text_set(btn, "Button 3");
   evas_object_show(btn);
   evas_object_smart_callback_add(btn, "clicked", _btn_clicked_cb, NULL);
   elm_object_text_set(btn, "Button 4");
   evas_object_show(btn);
   evas_object_smart_callback_add(btn, "clicked", _btn_clicked_cb, NULL);
   evas_object_resize(win, 300, 320);
   evas_object_show(win);
   return 0;
}