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AutoCAD 2025 for Mac Developer and ObjectARX
    • Customization Guide
    • DXF Reference
    • AutoLISP and DCL
    • ObjectARX
      • ObjectARX: Developer's Guide
        • ObjectARX Introductory Concepts
          • Overview of ObjectARX
          • Database Primer
          • ObjectARX Application Basics
            • Creating an ObjectARX Application
              • Creating Custom Classes
              • Responding to AutoCAD Messages
              • Implementing an Entry Point for AutoCAD
              • Initializing an ObjectARX Application
              • Preparing for Unloading
            • Example Application
            • Registering New Commands
            • Loading an ObjectARX Application
            • Unloading an ObjectARX Application
            • Application Automatic Loading
            • Demand Loading
            • ARX Command
            • Running ObjectARX Applications from AutoLISP
            • Error Handling
          • Database Operations
          • Database Objects
          • Entities
          • Container Objects
        • Basic Interaction with AutoCAD
        • Custom Objects
        • Advanced Topics
        • ObjectARX Graphics, Geometry, and Boundary Representation Libraries
      • ObjectARX: Reference Guide
      • ObjectARX: Release Notes
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    Creating Custom Classes

    You can derive custom classes from most of the ObjectARX class hierarchy. This allows you to leverage the functionality of the ObjectARX classes when creating your own objects. Defining custom classes is discussed in detail in Deriving a Custom ObjectARX Class.

    Parent topic: Creating an ObjectARX Application

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