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AutoCAD 2026 Developer and ObjectARX
    • Customization and Administration Guides
    • DXF Reference
    • AutoLISP and DCL
    • ActiveX and VBA
    • ObjectARX and Managed .NET
      • ObjectARX: Developer's Guide
      • ObjectARX: Reference Guide
      • ObjectARX: Managed .NET Developer's Guide
      • ObjectARX: Managed .NET Reference Guide
      • ObjectARX: Interoperability Guide
        • Namespaces and Naming Conventions
        • ObjectARX versus ObjectDBX Modules
        • User Interface Considerations (Dialogs, Commands, Menus, and System Variables)
        • ObjectARX Programming Practices
          • Support Extended Symbol Names
          • About Adding Resource Files for Different Language Products
          • Support MDI Operations
          • Check for Visibility of AutoCAD
          • Avoid Multithreading
          • Be Responsible for Memory Management
          • Use AcDbObject XDATA and Extension Dictionaries Conservatively
          • Minimize Processing in Input Point Callbacks
          • Follow AcEdInputPointFilter Etiquette
          • Observe $OSNAPCOORD Settings in Input Point Filters
          • Provide User Feedback During Time-Consuming Operations
          • Use AcDbHostApplicationServices::fatalError() or acrx_abort() Rather Than exit()
        • Custom Class Guidelines
        • Application Installation
        • Proper Use of Support Files
      • ObjectARX: Migration Guide
      • ObjectARX: Release Notes
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    ObjectARX Programming Practices

    Topics in this section
    • Support Extended Symbol Names
    • About Adding Resource Files for Different Language Products
    • Support MDI Operations
    • Check for Visibility of AutoCAD
    • Avoid Multithreading
    • Be Responsible for Memory Management
    • Use AcDbObject XDATA and Extension Dictionaries Conservatively
    • Minimize Processing in Input Point Callbacks
    • Follow AcEdInputPointFilter Etiquette
    • Observe $OSNAPCOORD Settings in Input Point Filters
    • Provide User Feedback During Time-Consuming Operations
    • Use AcDbHostApplicationServices::fatalError() or acrx_abort() Rather Than exit()

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