Procedure Combo_Fill_List
The Combo_fill_list message is sent by the construct_object procedure, and must be defined in this object if the object does not draw its data from a database file via combo_data_file, code_field, description_field, etc. You may define this procedure simply as a series of combo_add_item messages with the desired arguments, or you may define it to open a file, sequential or database, and assemble the list using combo_add_items to fill it with data from such file.