---
title: addEventMask
framework: security
role: symbol
role_heading: Type Property
path: security/seckeychaineventmask/addeventmask
---

# addEventMask

If the bit specified by this mask is set, your callback function is invoked when an item is added to a keychain.

## Declaration

```swift
static var addEventMask: SecKeychainEventMask { get }
```