Text-based object-oriented class code, located in either local or remote machines is converted into proxy components which can be used in existing visual builders. Proxy components are created from each method, including constructors, in the class code and encapsulate the parameters of the methods. For example, parameters associated with a method are represented by properties of the proxy component created from that method. These properties are visually editable and can be bound visually to other component properties using, for example, pull down menus in a visual builder. Exceptions which occur during operation of the method are treated as events and can be visually passed to other components. An add-on allows the components to appear directly in the visual builder palette. The components can interact with the text-based class code by means of a universal transport API.
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