Tizen Native API  6.0
clock_example.c
#include <Elementary.h>

EAPI_MAIN int
elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
{
   Evas_Object *win, *bx, *ck;
   unsigned int digedit;

   elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);

   win = elm_win_util_standard_add("clock", "Clock Example");
   elm_win_autodel_set(win, EINA_TRUE);

   bx = elm_box_add(win);
   evas_object_size_hint_weight_set(bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   elm_win_resize_object_add(win, bx);
   evas_object_show(bx);

   /* pristine (no seconds, military time) */
   ck = elm_clock_add(win);
   elm_box_pack_end(bx, ck);
   evas_object_show(ck);

   /* am/pm */
   ck = elm_clock_add(win);
   elm_clock_show_am_pm_set(ck, EINA_TRUE);
   elm_box_pack_end(bx, ck);
   evas_object_show(ck);

   /* with seconds and custom time */
   ck = elm_clock_add(win);
   elm_clock_show_seconds_set(ck, EINA_TRUE);
   elm_clock_time_set(ck, 10, 11, 12);
   elm_box_pack_end(bx, ck);
   evas_object_show(ck);

   /* in edition mode, with seconds, custom time and am/pm set */
   ck = elm_clock_add(win);
   elm_clock_edit_set(ck, EINA_TRUE);
   elm_clock_show_seconds_set(ck, EINA_TRUE);
   elm_clock_show_am_pm_set(ck, EINA_TRUE);
   elm_clock_time_set(ck, 10, 11, 12);
   elm_box_pack_end(bx, ck);
   evas_object_show(ck);

   /* in edition mode, with seconds, but only some digits editable */
   ck = elm_clock_add(win);
   elm_clock_show_seconds_set(ck, EINA_TRUE);
   elm_clock_edit_set(ck, EINA_TRUE);
   digedit = ELM_CLOCK_EDIT_HOUR_UNIT | ELM_CLOCK_EDIT_MIN_UNIT | ELM_CLOCK_EDIT_SEC_UNIT;
   elm_clock_edit_mode_set(ck, digedit);
   elm_box_pack_end(bx, ck);
   evas_object_show(ck);

   evas_object_show(win);

   elm_run();

   return 0;
}
ELM_MAIN()