---
title: "CFUserNotificationUpdate(_:_:_:_:)"
framework: Core Foundation
role: symbol
role_heading: Function
platforms: [macOS 10.0+]
path: "corefoundation/cfusernotificationupdate(_:_:_:_:)"
---

# CFUserNotificationUpdate(_:_:_:_:)

Updates a displayed user notification dialog with new user interface information.

## Declaration

```swift
func CFUserNotificationUpdate(_ userNotification: CFUserNotification!, _ timeout: CFTimeInterval, _ flags: CFOptionFlags, _ dictionary: CFDictionary!) -> Int32
```

## Parameters

- `userNotification`: The user notification to update.
- `timeout`: The new timeout value for the dialog.
- `flags`: A set of flags describing the type of notification to display. See doc://com.apple.corefoundation/documentation/CoreFoundation/CFUserNotificationCreate(_:_:_:_:_:) for details.
- `dictionary`: A description of the elements to display in the notification dialog. The possible keys are listed in doc://com.apple.corefoundation/documentation/CoreFoundation/dialog-description-keys.

## Return Value

Return Value 0 if the cancel was successful; a non-0 value otherwise.

## See Also

### CFUserNotification Miscellaneous Functions

- [CFUserNotificationCancel(_:)](corefoundation/cfusernotificationcancel(_:).md)
- [CFUserNotificationCheckBoxChecked(_:)](corefoundation/cfusernotificationcheckboxchecked(_:).md)
- [CFUserNotificationCreate(_:_:_:_:_:)](corefoundation/cfusernotificationcreate(_:_:_:_:_:).md)
- [CFUserNotificationCreateRunLoopSource(_:_:_:_:)](corefoundation/cfusernotificationcreaterunloopsource(_:_:_:_:).md)
- [CFUserNotificationDisplayAlert(_:_:_:_:_:_:_:_:_:_:_:)](corefoundation/cfusernotificationdisplayalert(_:_:_:_:_:_:_:_:_:_:_:).md)
- [CFUserNotificationDisplayNotice(_:_:_:_:_:_:_:_:)](corefoundation/cfusernotificationdisplaynotice(_:_:_:_:_:_:_:_:).md)
- [CFUserNotificationGetResponseDictionary(_:)](corefoundation/cfusernotificationgetresponsedictionary(_:).md)
- [CFUserNotificationGetResponseValue(_:_:_:)](corefoundation/cfusernotificationgetresponsevalue(_:_:_:).md)
- [CFUserNotificationGetTypeID()](corefoundation/cfusernotificationgettypeid().md)
- [CFUserNotificationPopUpSelection(_:)](corefoundation/cfusernotificationpopupselection(_:).md)
- [CFUserNotificationReceiveResponse(_:_:_:)](corefoundation/cfusernotificationreceiveresponse(_:_:_:).md)
- [CFUserNotificationSecureTextField(_:)](corefoundation/cfusernotificationsecuretextfield(_:).md)