Function Entry: VLAX-CURVE-ISCLOSED
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Function Entry: VLAX-CURVE-ISCLOSED
Name
vlax-curve-isClosed
Class
Visual LISP curve predicate
Syntax
(vlax-curve-isClosed curve)
Arguments and Values
curve— VLA-object designating a curve.
Description
Determines whether the specified curve is closed.
Return Values
- T if the curve is closed
- nil otherwise
Side Effects
None.
Availability
- 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.
Source Notes
- [vlax-curve-isClosed (AutoLISP/ActiveX)](https://help.autodesk.com/cloudhelp/2023/JPN/AutoCAD-AutoLISP-Reference/files/GUID-DC3C19D3-D0EA-4638-B8AB-E3A057B66D1F.htm)
Notes
- Autodesk glosses “closed” here as having the same start point and end point.
Compatibility
Available only on Windows.