# recognizedEvents(_:) Returns an unsigned integer that contains a union of event masks ``` func recognizedEvents(_ sender: Any!) -> Int ``` ## Parameters `sender` The client object requesting the supported events. ## Return Value An unsigned integer that contains a union of event masks (See the `NSEvent.h` header file. ## Discussion A client calls this method to check whether an input method supports an event. The default implementation returns `NSKeyDownMask`. If your input method handles only key down events, the Input Method Kit provides the default mouse handling. The default mouse-down handling behavior is as follows: If there is an active composition area and the user clicks in the text but outside of the composition area, the Input Method Kit sends your input method a `commitComposition:` message. This happens only for input methods that return only the default value—`NSKeyDownMask`. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)