Function Entry: VLAX-PROPERTY-AVAILABLE-P
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Function Entry: VLAX-PROPERTY-AVAILABLE-P
Name
vlax-property-available-p
Class
Visual LISP automation predicate
Syntax
(vlax-property-available-p obj property [check-modify])
Arguments and Values
obj— VLA-object.property— symbol or string naming the property to test.check-modify— optional T; if supplied, also requires that the property be modifiable.
Description
Determines whether an object has a specified property.
Return Values
- T if the property is available
- nil otherwise
If check-modify is T, returns nil when the property exists but is read-only.
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-property-available-p (AutoLISP/ActiveX)](https://help.autodesk.com/cloudhelp/2025/JPN/AutoCAD-LT-AutoLISP-Reference/files/GUID-E8A5B009-46D6-4BA7-9655-88104F8BE792.htm)
- [About Determining If an ActiveX Method or Property Applies to an Object (AutoLISP/ActiveX)](https://help.autodesk.com/cloudhelp/2024/HUN/AutoCAD-AutoLISP/files/GUID-F6607E76-FD9B-4B8B-B714-99CB34C988A5.htm)
Compatibility
Available only on Windows; not available on macOS or Web.