---
title: didBecomeCurrent
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/notificationcenter/messageidentifier/didbecomecurrent-9zfc
---

# didBecomeCurrent

The identifier of the message that posts after a mouse becomes the most recently used mouse.

## Declaration

```swift
static var didBecomeCurrent: NotificationCenter.BaseMessageIdentifier<GCMouse.DidBecomeCurrentMessage> { get }
```