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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
            • 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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    ObjectARX Application Basics

    This section describes how to write and run an ObjectARX ® application. It lists the messages passed by AutoCAD ® to the ObjectARX application and shows how the application typically responds to those messages. This section also discusses the registration of new commands, how to load and unload an application, AutoCAD's demand loading feature, and error handling.

    Topics in this section
    • Creating an ObjectARX Application
    • 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

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