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typedef struct appdata { Evas_Object *win; Evas_Object *conform; Evas_Object *nf; Evas_Object *datetime; Eext_Circle_Surface *circle_surface; } appdata_s; static void set_clicked_cb(void *data, Evas_Object *obj, void *event_info) { appdata_s *ad = data; elm_naviframe_item_pop(ad->nf); } static void create_main_view(appdata_s *ad) { Evas_Object *button = NULL; Evas_Object *layout = NULL; Evas_Object *circle_datetime = NULL; Elm_Object_Item *nf_it = NULL; layout = elm_layout_add(ad->nf); elm_layout_theme_set(layout, "layout", "circle", "datetime"); Evas_Object *label = elm_label_add(layout); elm_object_style_set(label, "label"); elm_object_text_set(label, "Duration: "); elm_object_part_content_set(layout, "elm.swallow.content", label); evas_object_show(label); /* Button */ button = elm_button_add(layout); elm_object_style_set(button, "bottom"); elm_object_text_set(button, "Set"); evas_object_show(button); elm_object_part_content_set(layout, "elm.swallow.btn", button); evas_object_smart_callback_add(button, "clicked", set_clicked_cb, ad); elm_object_part_text_set(layout, "elm.text", "Set time"); /* Timepicker */ // ad->datetime = elm_datetime_add(layout); // circle_datetime = eext_circle_object_datetime_add(ad->datetime, ad->circle_surface); // elm_datetime_value_set(ad->datetime, &ad->saved_time); // elm_object_style_set(ad->datetime, "timepicker/circle"); // elm_object_part_content_set(layout, "elm.swallow.content", ad->datetime); // evas_object_smart_callback_add(ad->datetime, "changed", _volume_changed_cb, layout); // eext_rotary_object_event_activated_set(circle_datetime, EINA_TRUE); nf_it = elm_naviframe_item_push(ad->nf, "Time picker", NULL, NULL, layout, NULL); elm_naviframe_item_title_enabled_set(nf_it, EINA_FALSE, EINA_FALSE); } static void create_base_gui(appdata_s *ad) { // Window ad->win = elm_win_util_standard_add(PACKAGE, PACKAGE); elm_win_autodel_set(ad->win, EINA_TRUE); evas_object_smart_callback_add(ad->win, "delete,request", win_delete_request_cb, NULL); // Conformant ad->conform = elm_conformant_add(ad->win); evas_object_size_hint_weight_set(ad->conform, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND); elm_win_resize_object_add(ad->win, ad->conform); evas_object_show(ad->conform); // Naviframe ad->nf = elm_naviframe_add(ad->conform); create_main_view(ad); elm_object_content_set(ad->conform, ad->nf); eext_object_event_callback_add(ad->nf, EEXT_CALLBACK_BACK, eext_naviframe_back_cb, NULL); // Add a surface for the circle object ad->circle_surface = eext_circle_surface_naviframe_add(ad->nf); /* Show window after base gui is set up */ evas_object_show(ad->win); }

Sorry for bad input. There is no preview and I can't edit posted message :(

typedef struct appdata 
​{
   Evas_Object *win;
   Evas_Object *conform;
   Evas_Object *nf;
   Evas_Object *datetime;
   Eext_Circle_Surface *circle_surface;
} appdata_s;

static void
set_clicked_cb(void *data, Evas_Object *obj, void *event_info)
{
   appdata_s *ad = data;

   elm_naviframe_item_pop(ad->nf);
}

static void
create_main_view(appdata_s *ad)
{
   Evas_Object *button = NULL;
   Evas_Object *layout = NULL;
   Evas_Object *circle_datetime = NULL;
   Elm_Object_Item *nf_it = NULL;

   layout = elm_layout_add(ad->nf);
   elm_layout_theme_set(layout, "layout", "circle", "datetime");

   Evas_Object *label = elm_label_add(layout);
   elm_object_style_set(label, "label");
   elm_object_text_set(label, "<align=center><font_size=32>Duration: </font_size></align>");
   elm_object_part_content_set(layout, "elm.swallow.content", label);
   evas_object_show(label);

   /* Button */
   button = elm_button_add(layout);
   elm_object_style_set(button, "bottom");
   elm_object_text_set(button, "Set");
   evas_object_show(button);
   elm_object_part_content_set(layout, "elm.swallow.btn", button);
   evas_object_smart_callback_add(button, "clicked", set_clicked_cb, ad);


   elm_object_part_text_set(layout, "elm.text", "Set time");

   /* Timepicker */
   //   ad->datetime = elm_datetime_add(layout);
   //   circle_datetime = eext_circle_object_datetime_add(ad->datetime, ad->circle_surface);
   //   elm_datetime_value_set(ad->datetime, &ad->saved_time);
   //   elm_object_style_set(ad->datetime, "timepicker/circle");
   //   elm_object_part_content_set(layout, "elm.swallow.content", ad->datetime);
   //   evas_object_smart_callback_add(ad->datetime, "changed", _volume_changed_cb, layout);
   //   eext_rotary_object_event_activated_set(circle_datetime, EINA_TRUE);

   nf_it = elm_naviframe_item_push(ad->nf, "Time picker", NULL, NULL, layout, NULL);
   elm_naviframe_item_title_enabled_set(nf_it, EINA_FALSE, EINA_FALSE);
}

static void
create_base_gui(appdata_s *ad)
{
   // Window
   ad->win = elm_win_util_standard_add(PACKAGE, PACKAGE);
   elm_win_autodel_set(ad->win, EINA_TRUE);

   evas_object_smart_callback_add(ad->win, "delete,request", win_delete_request_cb, NULL);

   // Conformant
   ad->conform = elm_conformant_add(ad->win);
   evas_object_size_hint_weight_set(ad->conform, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   elm_win_resize_object_add(ad->win, ad->conform);
   evas_object_show(ad->conform);

   // Naviframe
   ad->nf = elm_naviframe_add(ad->conform);
   create_main_view(ad);
   elm_object_content_set(ad->conform, ad->nf);
   eext_object_event_callback_add(ad->nf, EEXT_CALLBACK_BACK, eext_naviframe_back_cb, NULL);
   
   // Add a surface for the circle object
   ad->circle_surface = eext_circle_surface_naviframe_add(ad->nf);

   /* Show window after base gui is set up */
   evas_object_show(ad->win);
}

Hi,
fyi, but looks like in Native UI FW app example -> UI Components->Eext Dataime
"clicked" works for  elm_button even if elm_datatime object was set into "elm.swallow.content" using elm_object_part_content_set
Alexey.

Exactly. That's why I was surprised such behavior of the label element. But anyway, my final target was add label and datetime at the same time. Unfortunately, it's impossible in this layout theme.

You can add label and datetime at the same time with an EDC file.

   group {
      name: "content";
      parts {
         part {
             name: "datetime";
         	type: SWALLOW;
         	repeat_events: 1;
         	description {
         	   state: "default" 0.0;
         	}
         }
         part {
         	name: "label";
         	type: SWALLOW;
         	repeat_events: 1;
         	description {
         	   state: "default" 0.0;
         	}
         }
      }
   }

Add an layout object that uses above edc then add label and datetime to the label like below.

   Evas_Object* content_layout = elm_layout_add(layout);

   char edj_path[PATH_MAX] = {0, };
   app_get_resource("edje/basicuiapplication.edj", edj_path, (int)PATH_MAX);
   elm_layout_file_set(content_layout, edj_path, "content");
   elm_object_part_content_set(layout, "elm.swallow.content", content_layout);

   Evas_Object *label = elm_label_add(layout);
   elm_object_style_set(label, "label");
   elm_object_text_set(label, "<align=center><font_size=32>Duration: </font_size></align>");
//   evas_object_repeat_events_set(label, EINA_TRUE);
   elm_object_part_content_set(content_layout, "label", label);
   evas_object_show(label);

   /* Timepicker */
      ad->datetime = elm_datetime_add(layout);
      circle_datetime = eext_circle_object_datetime_add(ad->datetime, ad->circle_surface);
//      elm_datetime_value_set(ad->datetime, &ad->saved_time);
      elm_object_style_set(ad->datetime, "timepicker/circle");
//      elm_object_part_content_set(layout, "elm.swallow.content", ad->datetime);
      elm_object_part_content_set(content_layout, "datetime", ad->datetime);
//      evas_object_smart_callback_add(ad->datetime, "changed", _volume_changed_cb, layout);
      eext_rotary_object_event_activated_set(circle_datetime, EINA_TRUE);

I commented out some lines to fix build break but I think it's enough.

Thank you very much! This and previous advices have solved my problem. Now I can implement needed functionality!