Altium Designer Documentation
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PCB Query Functions
Layer Checks
OnBottom
Created: September 02, 2015 | Updated: August 20, 2021
| Applies to versions: 15.1, 16.0, 16.1, 17.0, 17.1, 18.0, 18.1, 19.0, 19.1, 20.0, 20.1 and 20.2
Now reading version 20.1. For the latest, read: OnBottom for version 21
Parent page: PCB Query Functions - Layer Checks
Summary
Returns all objects on the layers: Bottom Layer, Bottom Overlay, Bottom Paste, and Bottom Solder.
Syntax
OnBottom : Boolean
Example Usage
OnBottom
OnBottom = True
Returns all objects on the layers: Bottom Layer, Bottom Overlay, Bottom Paste, and Bottom Solder.
Not OnBottom
OnBottom = False
Returns all objects except objects on the layers: Bottom Layer, Bottom Overlay, Bottom Paste, and Bottom Solder.