Abstract: A method for invoking a user interface for use with an application operating in a computer system which involves providing in the computer system a generic object class that corresponds to a class of function that is to be performed using the user interface; specifying in the application instance data in the form of a generic object specification that corresponds to the generic object class, the instance data including attribute criteria and hint criteria; providing in the computer system at least one specific user interface toolbox and controller that operates in the computer system to provide a selection of possible specific user interface implementations for use in performing the class of function; and providing in the computer system at least one interpreter that corresponds to the at least one specific user interface toolbox and controller.