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AutoCAD 2025 Developer and ObjectARX
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    • ObjectARX and Managed .NET
      • ObjectARX: Developer's Guide
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        • General Development Compatibility (ObjectARX/.NET)
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          • Removal of Header Files (ObjectARX)
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          • 64-bit Migration Guide
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            • Porting ObjectARX Code to 64 Bits
              • Single Sourcing with Polymorphic Types
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                  • Using /Wp64 to Catch 64-bit Portability Issues
                  • __w64 and _W64 Modifiers
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    Compiler Tips

    Using the /Wp64 compiler switch can help you detect and fix 64-bit porting issues more quickly.

    Topics in this section
    • Using /Wp64 to Catch 64-bit Portability Issues
    • __w64 and _W64 Modifiers
    Parent topic: Visual C++ Changes

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