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# rulerView(_:didMove:)

Informs the client that `aRulerView` allowed the user to move `aMarker`.

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

## Discussion

The client can take whatever action it needs based on this message, such as updating the location of a tab stop in the selected paragraph, moving a layout guideline, or resizing a graphics element.

## See Also

[`representedObject`](/documentation/AppKit/NSRulerMarker/representedObject)

The object the receiver represents.

[`markerLocation`](/documentation/AppKit/NSRulerMarker/markerLocation)

The location of the receiver in the coordinate system of the ruler view’s client view.


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