---
title: "init(target:selector:)"
framework: quartzcore
role: symbol
role_heading: Initializer
path: "quartzcore/cadisplaylink/init(target:selector:)"
---

# init(target:selector:)

Creates a display link for a target that calls its selector.

## Declaration

```swift
init(target: Any, selector sel: Selector)
```

## Parameters

- `target`: An object in your app that you want the system to notify each time it updates a display.
- `sel`: A selector instance that represents a method for target.

## Return Value

Return Value A new CADisplayLink object.

## Discussion

Discussion The selector on the target must be a method with the following signature, where sender is the display link returned by this method. The newly constructed display link retains the target.