Saludos...
Para que te quede claro...
El PowerScript es un pseudolenguaje derivado de c para poder programar los eventos de cada objeto que tu creas o definas en la aplicación, así mismo puedes crear nuevos objetos directamente con Powerscript, por ejemplo instancias de accesso a la BD, etc...
Para que leas un poco desde la misma documentación de PB...
Description
PowerBuilder 6.0 has several new objects that provide information about an object's class definition and its variables and scripts.
A class definition object is a PowerBuilder object that provides information about the class definition of another PowerBuilder object. You can examine a class definition in a PowerBuilder library or the class definition associated with an instantiated object.
Uses
Class definition information is important for developers of tools and object frameworks. Developers can inspect objects to produce reports or to define objects with similar characteristics. Class information is not important in typical business applications.
Implementation
These new objects provide class definition information:
Object Description
TypeDefinition Provides information about a data type and is the ancestor of several more specific definition objects: ClassDefinition, SimpleTypeDefinition, and EnumerationDefinition
ClassDefinition Provides the object's class name, library, ancestor, parent, variables, scripts, and the objects it contains
SimpleTypeDefinition Provides information about a simple data type, such as integer, string, blob, and Any
EnumerationDefinition Provides information about an enumerated data type
VariableDefinition Provides information about a variable or property associated with a class definition, including its access level, scope, and whether it is an array
ScriptDefinition Provides information about a function or event script associated with a class definition, including its arguments and return type, whether it is external, and whether it is defined locally or in an ancestor object
Other objects and enumerated data types provide values for properties of these objects.
Several new properties and functions give you access to definition information for your objects:
· PowerObject has a new property called ClassDefinition, making a ClassDefinition object available for any instantiated object
· New global functions called FindTypeDefinition and FindClassDefinition get a type or class definition object for an entry in a PowerBuilder library
· New global function FindFunctionDefinition gets script information for a global function
