---
title: CFNotificationSuspensionBehavior
framework: Core Foundation
role: symbol
role_heading: Enumeration
path: corefoundation/cfnotificationsuspensionbehavior
---

# CFNotificationSuspensionBehavior

Suspension flags that indicate how distributed notifications should be handled when the receiving application is in the background.

## Declaration

```swift
enum CFNotificationSuspensionBehavior
```

## Overview

Overview An application selects the suspension behavior for a given notification when it registers an observer for that notification with CFNotificationCenterAddObserver(_:_:_:_:_:_:).

## Topics

### Constants

- [CFNotificationSuspensionBehavior.drop](corefoundation/cfnotificationsuspensionbehavior/drop.md)
- [CFNotificationSuspensionBehavior.coalesce](corefoundation/cfnotificationsuspensionbehavior/coalesce.md)
- [CFNotificationSuspensionBehavior.hold](corefoundation/cfnotificationsuspensionbehavior/hold.md)
- [CFNotificationSuspensionBehavior.deliverImmediately](corefoundation/cfnotificationsuspensionbehavior/deliverimmediately.md)

### Initializers

- [init(rawValue:)](corefoundation/cfnotificationsuspensionbehavior/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Constants

- [Notification Posting Options](corefoundation/1569610-notification-posting-options.md)