Method: CONSTRUCTOR
Method: REFRESH
Method: ON_TOOLBAR
Method: DISPLAY
Method: ON_USER_COMMAND
Method: ON_DOUBLE_CLICK
Method: SELECT_ITEM_BY_DB_KEY
Method: ON_MENU_BUTTON
Method: ON_CONTEXT_MENU_REQUEST
Method: ON_DATA_CHANGED
Method: FUNCTION_DELETE
Method: ON_BUTTON_CLICK
Method: ON_PRINT_TOP_OF_LIST
Method: SET_DEFAULTS
Method: SET_COLUMNS_TO_DISPLAY