Cancels a user notification dialog.


func CFUserNotificationCancel(_ userNotification: CFUserNotification!) -> Int32



The user notification to cancel.

Return Value

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


You must cancel a user notification if you want to remove its dialog from the screen before the user dismisses it. It is not sufficient to just release the object.

See Also

CFUserNotification Miscellaneous Functions

func CFUserNotificationCheckBoxChecked(CFIndex) -> CFOptionFlags

Returns a flag used to set or test a checkbox’s state.

func CFUserNotificationGetResponseDictionary(CFUserNotification!) -> CFDictionary!

Returns the dictionary containing all the text field values from a dismissed notification dialog.

func CFUserNotificationGetResponseValue(CFUserNotification!, CFString!, CFIndex) -> CFString!

Extracts the values of the text fields from a dismissed notification dialog.

func CFUserNotificationGetTypeID() -> CFTypeID

Returns the type identifier for the CFUserNotification opaque type.

func CFUserNotificationPopUpSelection(CFIndex) -> CFOptionFlags

Returns a flag used to set the selected element of a pop-up menu.

func CFUserNotificationReceiveResponse(CFUserNotification!, CFTimeInterval, UnsafeMutablePointer<CFOptionFlags>!) -> Int32

Waits for the user to respond to a notification or for the notification to time out.

func CFUserNotificationSecureTextField(CFIndex) -> CFOptionFlags

Returns a flag used to set the secure state of a text field.

func CFUserNotificationUpdate(CFUserNotification!, CFTimeInterval, CFOptionFlags, CFDictionary!) -> Int32

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