acad-events-overrules

Subscribe to AutoCAD events and implement overrules for object behavior.

3|Updated Feb 17, 2026
One-click install
npx skills add https://github.com/hebackus/c3d-api-plugin --skill acad-events-overrules
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: acad-events-overrules
Source: https://github.com/hebackus/c3d-api-plugin/tree/main/skills/acad-events-overrules
Command: npx skills add https://github.com/hebackus/c3d-api-plugin --skill acad-events-overrules

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Developers and CAD tool integrators need to extend AutoCAD's behavior through events and overrules to customize how objects are created, drawn, transformed, and interacted.

Core Features & Use Cases

  • Subscribing to Database, Document, Application, and Editor events to respond to changes in objects, documents, and the editor context.
  • Implementing ObjectOverrule, DrawableOverrule, TransformOverrule, and GripOverrule to override default operations and rendering.
  • Use Case: enforce custom rules during object creation, control drawing augmentations, or restrict transformations for specific entity types.

Quick Start

Create a plugin that registers an overrule in Initialize, subscribe to relevant events, and unhooks them in Terminate.

Frequently Asked Questions about acad-events-overrules

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I use ObjectOverrule and TransformOverrule to customize AutoCAD behavior?

You can customize AutoCAD behavior by implementing ObjectOverrule, DrawableOverrule, TransformOverrule, and GripOverrule in a plugin project to override default object operations, rendering, and entity transformations.

What is the best way to subscribe to AutoCAD database and document events for automation?

Subscribing to AutoCAD database, document, application, and editor events allows you to respond to object lifecycle changes and editor context updates, enabling workflow automation within your custom plugin.

Can I enforce custom rules during AutoCAD object creation without modifying core files?

Yes, you can enforce custom rules during object creation by implementing ObjectOverrule interfaces in a plugin and registering the overrules during the plugin's initialization phase to intercept default operations.

How do I control drawing augmentations and restrict interactions for specific AutoCAD entities?

You can control drawing augmentations and restrict entity interactions by applying DrawableOverrule and GripOverrule to override default rendering and grip behaviors for specific entity types in your plugin.

Do I need a plugin project to register overrules and handle AutoCAD events?

Yes, implementing overruling and event-handling interfaces requires a dedicated plugin project where you register overrules during initialization and unhook events in the Terminate method.

Why should I use overrules instead of standard AutoCAD event handlers for object modification?

Overrules provide deeper control by directly overriding default rendering, transformation, and interaction behaviors for specific entities, whereas standard events only notify you after database or document changes occur.