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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
          • Database Operations
          • Database Objects
            • Opening and Closing Database Objects
            • Deleting Objects
            • Database Ownership of Objects
            • Adding Object-Specific Data
              • Extended Data
              • Extension Dictionary
            • Erasing Objects
            • Object Filing
            • Embedded and Encapsulating 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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    Adding Object-Specific Data

    You can use any of four mechanisms for adding instance-specific data in your application:

    • Extended data (xdata)
    • Xrecords (see Container Objects)
    • Extension dictionaries of any object
    • Custom objects that can hold data
    Topics in this section
    • Extended Data
    • Extension Dictionary
    Parent topic: Database Objects

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