what correct event is necessary for a file choice?

    evas_object_smart_callback_add(file_select, "chosen", clicked_select_file, ad->navi);

the selected file isn’t written through fprintf. Only path.

void
clicked_select_file(void *data, Evas_Object *obj, void *event_info)
{
    /* узнать расположение файла */

		const char *tmp = elm_fileselector_path_get(obj);

		/* добавить строку в буфер */

		int len = strlen (tmp);
		if ( log_file == NULL ){
			log_file = calloc(len + 1, 1);
			strncpy(log_file, tmp, len);
		}
		else{
			free(log_file);
			log_file = calloc(len + 1, 1);
			strncpy(log_file, tmp, len);
		}
		FILE *log_list = fopen("/opt/home/app/log","w");
		fprintf(log_list,"%s\n",log_file);
		fclose(log_list);
}