gw_combo_box_categories_create
gw_combo_box_categories_load
gw_combo_box_categories_set_catalog_info
gw_combo_box_categories_set_selected_category
gw_combo_box_categories_set_selected_category_name
gw_combo_box_categories_get_selected_category
gw_combo_box_categories_get_selected_category_name
gw_combo_box_categories_get_combo
gw_combo_box_categories_get_catalog_info
gw_combo_box_categories_get_categories