---
title: "rulerView(_:didAdd:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nsview/rulerview(_:didadd:)"
---

# rulerView(_:didAdd:)

Informs the client that aRulerView allowed the user to add aMarker.

## Declaration

```swift
func rulerView(_ ruler: NSRulerView, didAdd marker: NSRulerMarker)
```

## Discussion

Discussion The client can take whatever action it needs based on this message, such as adding a new tab stop to the selected paragraph or creating a layout guideline.

## See Also

### Related Documentation

- [representedObject](appkit/nsrulermarker/representedobject.md)
- [markerLocation](appkit/nsrulermarker/markerlocation.md)

### Synchronizing with Ruler Views

- [rulerView(_:didMove:)](appkit/nsview/rulerview(_:didmove:).md)
- [rulerView(_:didRemove:)](appkit/nsview/rulerview(_:didremove:).md)
- [rulerView(_:handleMouseDownWith:)](appkit/nsview/rulerview(_:handlemousedownwith:).md)
- [rulerView(_:locationFor:)](appkit/nsview/rulerview(_:locationfor:).md)
- [rulerView(_:pointForLocation:)](appkit/nsview/rulerview(_:pointforlocation:).md)
- [rulerView(_:shouldAdd:)](appkit/nsview/rulerview(_:shouldadd:).md)
- [rulerView(_:shouldMove:)](appkit/nsview/rulerview(_:shouldmove:).md)
- [rulerView(_:shouldRemove:)](appkit/nsview/rulerview(_:shouldremove:).md)
- [rulerView(_:willAdd:atLocation:)](appkit/nsview/rulerview(_:willadd:atlocation:).md)
- [rulerView(_:willMove:toLocation:)](appkit/nsview/rulerview(_:willmove:tolocation:).md)
- [rulerView(_:willSetClientView:)](appkit/nsview/rulerview(_:willsetclientview:).md)