My native application i am using image that is fitted in full screen. how to implement the image zooming option following code will be i used static void bg_mango_tree_cb(void *data, Evas_Object *obj, void *event_info) { Evas_Object *bg; Evas_Object *nf = data; char buf[PATH_MAX]; bg = elm_bg_add(nf); elm_bg_option_set(bg, ELM_BG_OPTION_STRETCH); snprintf(buf, sizeof(buf), “%s/*”, ICON_DIR); elm_bg_file_set(bg, buf, NULL); elm_naviframe_item_push(nf, “*”, NULL, NULL,bg, NULL); }