Altium Designer 文档
...
((PCB Query Functions))_AD
PCB Query((Membership Checks))_AD
Query_Lang-PCBFunctions_MembershipChecks_ExistsOnLayerExistsOnLayer_AD
Created: 八月 02, 2022 | Updated: 八月 02, 2022
| Applies to version: 21
This document is no longer available beyond version 21.0. Information can now be found here: ExistsOnLayer for version 25
Parent page: PCB Query Functions - Membership Checks
Summary
Returns all objects that exist on the specified layer.
Syntax
ExistsOnLayer(Layer : String) : Boolean/Boolean_String
Example Usage
ExistsOnLayer('Top Layer')
ExistsOnLayer('Top Layer') = True
ExistsOnLayer('Top Layer') = 'True'
Returns all objects that exist on the Top Layer.
Not ExistsOnLayer('Mechanical 3')
ExistsOnLayer('Mechanical 3') = False
ExistsOnLayer('Mechanical 3') = 'False'
Returns all objects except objects that exist on the Mechanical 3 layer.
Tips
- The single quote characters (') at the start and end of
Layerare mandatory.