This .NET class wraps the AcRxClass ObjectARX class. 

Class objects (actually objects of an internal class derived from Class, since AcRxClass is an abstract base class) are used as the nodes in the ObjectARX runtime class hierarchical tree. Each instance of an Class represents a C++ class derived from AcRxObject (or Object itself). The run-time information about such C++ classes and their hierarchical relationships is available through the Class objects that make up the runtime tree. 

For each class, Class maintains the following information about the C++ class it represents: 

• Set of immediately derived classes
• Parent class
• Class ASCII name
• Class DXF name, if it is derived from DBObject
• Class “application” name, in case other applications need to prompt for loading of an application
• Set of “protocol extension” objects attached.

Autodesk.AutoCAD.Runtime.DisposableWrapper
    Autodesk.AutoCAD.Runtime.RXObject
        Autodesk.AutoCAD.Runtime.RXClass

Public sealed Class RXClass
Inherits RXObject

public sealed class RXClass : RXObject;