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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
        • Basic Interaction with AutoCAD
        • Custom Objects
          • Proxy Objects
          • Object Enablers
          • Deriving a Custom ObjectARX Class
          • Deriving from AcDbObject
            • Overriding AcDbObject Virtual Functions
            • Implementing Member Functions
            • Filing Objects to DWG and DXF Files
            • Object References
            • Ownership References
            • Pointer References
              • Hard Pointers
              • Soft Pointers
            • Long Transaction Issues for Custom Objects
            • Purge
            • Undo and Redo
            • subErase, subOpen, subClose, and subCancel
            • Example of a Custom Object Class
            • Object Version Support
          • Deriving from AcDbEntity
        • Advanced Topics
        • ObjectARX Graphics, Geometry, and Boundary Representation Libraries
      • ObjectARX: Reference Guide
      • ObjectARX: Release Notes
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    Pointer References

    Your custom class may also contain hard or soft pointer references to other objects in the database. A pointer is a one-way link (that is, there is no information in the referenced object that indicates the source of the pointer). An object can point to, or be pointed to by, any number of other objects.

    Topics in this section
    • Hard Pointers
    • Soft Pointers
    Parent topic: Deriving from AcDbObject

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