A scripting bridge allows a developer to automatically build glue classes to access a scriptable application with standard method calls written in a language such as Objective-C. The Objective-C code sends properly formed Apple events automatically (or events according to some other event protocol), so that the developer is not required to have any knowledge of the scripting language of the target application. Classes can be created dynamically at run-time, including dynamic creation of methods within those classes. Lazy evaluation is employed to avoid unnecessary inter-process communication traffic.The present invention provides a straightforward model for controlling scriptable applications that can result in code that is significantly faster and more efficient than prior art methods.