Function Entry: VLR-REACTION-SET
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Function Entry: VLR-REACTION-SET
Name
vlr-reaction-set
Class
Reactor mutator function
Syntax
(vlr-reaction-set reactor event-name callback)
Description
Adds or replaces a callback function in a reactor.
Return Values
Host-defined success value.
Side Effects
Mutates the callback set associated with the reactor.
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
- [vlr-reactors (AutoLISP/ActiveX)](https://help.autodesk.com/cloudhelp/2026/ENU/AutoCAD-AutoLISP-Reference/files/GUID-10C29F2A-8DF9-4511-8A5C-7DA92A4DA431.htm)
- [About Querying and Modifying Reactors (AutoLISP/ActiveX)](https://help.autodesk.com/cloudhelp/2024/FRA/AutoCAD-AutoLISP/files/GUID-8A2E5A06-9479-4E9D-B99A-9D4DC79BD77E.htm)
- Status: documented.