Object Type Checks

At a Glance

This article is a reference guide to the Object Type Checks category of query keywords available in PCB and PCB Library documents in Altium Designer. It explains what each keyword returns, shows the correct syntax, and includes simple example usage so you can quickly identify objects such as arcs, vias, pads, dimensions, back drill sites, 3D bodies, and mask-related items when working in the Query Helper or Filter panel. If you need a fast way to understand which object type check to use and what result to expect, this page gives you a clear, practical lookup to help you work more confidently, keep reading and find the exact query you need.

- A quick reference to Object Type Checks query keywords, including what each one returns and how it is written.
- Example expressions that show how to use each function with true, false, or not conditions.
- Help identifying specific PCB object categories such as holes, masks, dimensions, 3D model types, vias, and back drill sites.
Go Deeper with AI:

The Object Type Checks PCB query functions are shown in the Query Helper dialog
The Object Type Checks PCB query functions are shown in the Query Helper dialog

This reference page details the query language keywords from the Object Type Checks category available in PCB and PCB Library documents in Altium Designer. For help on a specific query keyword, use the following collapsible sections or highlight (or click inside) any given keyword in the Query Helper or a Filter panel then press F1 to access its section right away.

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Contents
Feature Availability

The features available to you depend on which Altium solution you have – Altium Develop, Altium Agile Teams, Altium Agile Enterprise, or Altium Designer (on active term).

If you don’t see a documented feature in your actual software, contact Altium Sales to find out more.

Legacy Documentation

Altium Designer documentation is no longer versioned. If you need to access documentation for older versions of Altium Designer, visit the Legacy Documentation section of the Other Installers page.