Function Entry: VLAX-LDATA-DELETE

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Function Entry: VLAX-LDATA-DELETE

Name

vlax-ldata-delete

Class

Visual LISP persistent-data deletion function

Syntax

(vlax-ldata-delete dictionary key [private])

Arguments and Values

dictionary — VLA-object or string naming a global dictionary.
key — string naming the ldata key.
private — T or nil.

Description

Deletes persistent AutoLISP data associated with a dictionary or object.

Return Values

Returns T if deletion succeeds; otherwise returns nil, for example when the data does not exist.

Notes

If private is non-nil and the call originates from a separate-namespace VLX, Autodesk documents that private ldata is deleted.

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-ldata-delete (AutoLISP/ActiveX)](https://help.autodesk.com/cloudhelp/2026/JPN/AutoCAD-AutoLISP-Reference/files/GUID-06F6C8B7-A55C-42DE-BD51-A9FAB68260D3.htm)

Compatibility

Available on Windows only; not available on macOS or Web.