I am writing a Tizen naitive app, I’ve set a layout group by call elm_layout_file_set, as below code: ... app_get_resource(EDJ_FILE, edj_path, (int)PATH_MAX); layout = elm_layout_add(ad->conform); elm_layout_file_set(layout, edj_path, GRP_LOADING_PAGE); evas_object_size_hint_weight_set(layout, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND); evas_object_show(layout); elm_object_content_set(ad->conform, layout); At the same time, I want to new a thread, and in the thread callback function I want to remove the previous added layout group and then add a new layout group. I am go though of the header file elm_layout.h, try to find a reverse function(function name possible like elm_layout_file_unset), but failed, there’s no such function. Anyone know is there such function in EFL?