---
title: cgDirectDisplayID
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nsscreen/cgdirectdisplayid-8ph5i
---

# cgDirectDisplayID

The CGDirectDisplayID for this screen. This will return nil if there isn’t one and will never return kCGNullDirectDisplay.

## Declaration

```swift
var cgDirectDisplayID: CGDirectDisplayID? { get }
```