Removes an observer from a notification center.
cocoa
remove-observer target &key name object center
| target⇩ |
A pointer to an Objective-C foreign object. |
| name⇩ |
A string or nil. |
| object⇩ |
A pointer to an Objective-C foreign object or nil. |
| center⇩ |
A notification center. |
The function remove-observer calls the Objective-C instance method "removeObserver:name:object:" of center to remove target as an observer with the given name and object, which both default to nil.
If center is omitted then it defaults to the default notification center.
LispWorks Objective-C and Cocoa Interface User Guide and Reference Manual - 01 Dec 2021 19:38:33