Function Entry: VLAX-IMPORT-TYPE-LIBRARY

vlax-import-type-library

Visual LISP automation utility

(vlax-import-type-library [options ...])

Autodesk documents the concrete keyword syntax as:

(vlax-import-type-library
  :tlb-filename filename
  [:methods-prefix mprefix
   :properties-prefix pprefix
   :constants-prefix cprefix])

Keywords are required for the arguments.

Imports information from a type library.

T if successful; otherwise nil.

Creates or registers bindings based on external type-library metadata.

• Autodesk documents that imported wrapper functions are available only in the context of the document from which the import was issued.
• Autodesk recommends calling this at top level, before any code that uses the generated wrappers or constants.
• Autodesk recommends avoiding absolute paths for portability.

• AutoCAD 2026: documented (per Autodesk reference page).
• BricsCAD V26: presumed compatible (no contradicting page found).
• Status: AutoCAD documented; BricsCAD presumed-both pending Phase 4 verification.

• [vlax-import-type-library (AutoLISP)](https://help.autodesk.com/cloudhelp/2026/CHS/AutoCAD-LT-AutoLISP-Reference/files/GUID-1699B6A0-C4A6-4BC4-82DF-5040CFF3394A.htm)
• [About Importing a Type Library (AutoLISP/ActiveX)](https://help.autodesk.com/cloudhelp/2023/HUN/AutoCAD-AutoLISP/files/GUID-B140BF54-AD94-47EE-BC3E-91AEFA63D0CE.htm)

Available on AutoCAD for Windows only; not available in AutoCAD LT for Windows, or on macOS or Web.