Learn AUTOLISP with Real Code Examples

AutoLISP interpreter embedded in AutoCAD

Scripts executed in AutoCAD command line or loaded at startup

Access AutoCAD entities via Object Data (DXF) model

Functions can call built-in AutoCAD commands

Optionally extend via ActiveX/COM for external integration

Commands executed via AutoCAD command line

Functions manipulate drawing database (DXF data)

Event-driven actions possible with reactors

Optional interaction with host file system

Scripts can call built-in AutoCAD commands directly

Script-based automation

Command definition via defun

Selection sets for batch processing

Event-driven automation using reactors

Modular function libraries for reusability

Automated AEC drafting workflows

Batch mechanical drawing processing

Civil infrastructure CAD automation

Parametric design generation

Data extraction and reporting systems

Simplicity for CAD automation

Direct manipulation of drawing entities

Rapid prototyping of scripts

Compatibility with legacy AutoCAD workflows

Integration with AutoCAD command environment

Organize scripts into modular libraries

Use efficient selection sets for large drawings

Minimize screen regeneration

Batch process multiple drawings

Integrate with external data for larger workflows

Port old LISP scripts to newer AutoCAD versions

Update deprecated commands

Test scripts in safe drawings

Refactor for Visual LISP IDE improvements

Ensure compatibility with 64-bit AutoCAD