# NSTextCheckingClient ``` protocol NSTextCheckingClient : NSTextInputClient, NSTextInputTraits ``` ## Topics ### Instance Methods [`func addAnnotations([NSAttributedString.Key : String], range: NSRange)`](/documentation/AppKit/NSTextCheckingClient/addAnnotations(_:range:)) [`func annotatedSubstring(forProposedRange: NSRange, actualRange: NSRangePointer?) -> NSAttributedString?`](/documentation/AppKit/NSTextCheckingClient/annotatedSubstring(forProposedRange:actualRange:)) [`func candidateListTouchBarItem() -> NSCandidateListTouchBarItem?`](/documentation/AppKit/NSTextCheckingClient/candidateListTouchBarItem()) [`func removeAnnotation(NSAttributedString.Key, range: NSRange)`](/documentation/AppKit/NSTextCheckingClient/removeAnnotation(_:range:)) [`func replaceCharacters(in: NSRange, withAnnotatedString: NSAttributedString)`](/documentation/AppKit/NSTextCheckingClient/replaceCharacters(in:withAnnotatedString:)) [`func selectAndShow(NSRange)`](/documentation/AppKit/NSTextCheckingClient/selectAndShow(_:)) [`func setAnnotations([NSAttributedString.Key : String], range: NSRange)`](/documentation/AppKit/NSTextCheckingClient/setAnnotations(_:range:)) [`func view(for: NSRange, firstRect: NSRectPointer?, actualRange: NSRangePointer?) -> NSView?`](/documentation/AppKit/NSTextCheckingClient/view(for:firstRect:actualRange:)) ## Relationships ### Inherits From [`NSTextInputClient`](/documentation/AppKit/NSTextInputClient) [`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol) [`NSTextInputTraits`](/documentation/AppKit/NSTextInputTraits) --- 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)