Using NSMenuItem's delegate method menu(_ menu: NSMenu, willHighlight item: NSMenuItem?) should return a nil item when the mouse location is moved out of the NSMenu window or if any of the items should not be highlighted. As per Apple Developer website: Only one item per menu can be highlighted at a time. If item is nil, it means that all items in the menu are about to be unhighlighted. But, on macOS Sonoma, when moving the mouse over a .sectionHeader and/or a Separator item, willHighlight won't be called, which makes it not return any item (neither nil, nor the section header). This behavior makes it impossible to use willHighlight method to determine whether custom views should be highlighted or not. Is this a bug or expected behavior?

I have a document class that makes a main window for showing the data. Pieces of that data can be opened in separate subwindows for editing. When the user closes the main window and the document is dirty and the subwindows are dirty, I would like to present UI that asks the user if they want to save the changes in the subwindows (and possibly the main window if I decide to turn off autoSavesInPlace for the document). I've tried a number of possible methods of doing this, but always run into some roadblock: -Overriding shouldCloseWindowController:delegate:shouldCloseSelector:contextInfo: where I would go through the open subwindows and asking and tell them to do their own UI for asking if they should be saved. This is no good because everything returns back to the run loop and the doc would close, leaving the subwindows open with their Save? sheets up. -Making the subwindows inherit from NSEditor and registering them with the document. This looked like it would work, but it caused an infinite loop in my override of commitEditingWithDelegate:didCommitSelector:contextInfo: that I don't understand. I'm probably calling the didCommitSelector wrong because the docs aren't clear and provide no example. -Adding each subwindow's NSWindowController to the document's windowControllers list. I don't recall the problems this caused. Any sage advice about this? Possible examples? The Document is Swift, the subwindows are Cocoa, so examples in either language is fine.

I have a fairly robust MacOS application that has an NSScrollView that contains a canvas with various subviews (including web views and text views that contain scroll views), and a couple of peer views that track items in the scroll view (eg: screen space controls). Some of these views interrupt two finger scrolling. Every scroll view, and one of the peer views (essentially a stack view with buttons in it). I have written an additional bare bones application which does roughly the same thing, and my bare bones application works perfectly: Start two-finger dragging, scroll any of these other things under the cursor, I can continue to drag (and start dragging in any of those, and they drag without interfering with the parent scroll view). I have tried everything to recreate the interruption, including drag gestures attached to these various ancillary views, and I cannot figure out why dragging some of these views under the cursor interrupts two finger drag in our application, but not in my testbed. Does anyone have suggestions for how to debug this? I can see that there is a gesture recognizer in the NSScrollView hierarchy, but I don't see it in any of my gesture recognizer handling. I have breakpoints on every variation of hit testing and mouse motion, and none of them are getting hit in unexpected ways. I'm at my wit's end. Thanks.

Specs: macOS Sonoma 14.3.1 Using NSMenu's submenus with a list of NSMenuItems (with or without custom views) will produce a hang for the first time they are presented. The larger the list, the more time the UI will be frozen before presenting the submenu. Is there something that can be done to mitigate this behavior?

Hello, When running an iPad app on Apple Silicon (M1) the expirationDate OptionKey of the UIPasteboard has no impact, i.e. the copied value is never removed from the clipboard. The following code works perfectly on iOS, however, behaves how I described above on macOS. let currentDate = Date() let expireDate = currentDate.addingTimeInterval(TimeInterval(90)) UIPasteboard.general.setItems([[UIPasteboard.typeAutomatic: myString]], options: [UIPasteboard.OptionsKey.expirationDate: expireDate]) Is this a bug? I am on Swift 5.10. Thank you!

Is there any way to keep an NSWindow always on top of other windows (inside an app)? I want to create a "preview" window for pictures and videos with it not taking up space in the main window.

Hi, I think the title says it: my application needs to obtain a list of all applications that are configured as potential editors of a certain file type, for example jpeg or tiff. I've found LSCopyAllRoleHandlersForContentType which appears to do what I need, but it is deprecated since macos 12.0. What's the modern alternative? My app is built in c++ with some objective-c. Thanks Joost

On a submenu (NSMenu), items that use custom views as part of their layout, do not call NSMenu's delegate willHighlight method. The method is called correctly when placing the same items with custom views inside the root/parent NSMenu. Steps Create a NSMenu with at least two NSMenuItem; One with a custom view and another without it. Add a submenu to the item without a custom view; make sure to set the submenu's delegate Add multiple items to the submenu; Make sure some of the items are using custom views Using one of NSMenu's delegate method, willHighlight, check if it will return an item when hovering over the custom view items inside the submenu Notice it will only return when hovering over items that do not use a custom view. Expected Result NSMenu's willHighlight method should be called and inform with item with custom view should be highlighted inside the submenu. Tests done on macOS 14.3.1 and 14.4.1. Xcode 15.2 and 15.3.

After popping up a NSMenu a few times, NSResponder's mouseExited event is called even when the cursor is inside the tracking area, returning the main app window's max X value, which makes the mouseEntered/Exited methods unusable for tracking whether or not cursor is currently inside the view's frame. Steps Create a NSMenuItem with a custom view inside Add a tracking area to the views frame Add a background color that changes on mouseEntered/Exited Open and close NSMenu a few times until the color starts flickering when moving the cursor inside the view's frame If possible, print out NSEvent's locationInWindow on both mouseEntered and Exited and see that the location for exited method is not being reported correctly, while the flickering from the bg color being set is happening. Expected Result mouseExited should only be called the cursor leaves the tracking area. locationInWindow values should not exceed the NSPopUpWindow's frame. Tested on macOS Sonoma 14.3.1 and 14.4.1; Xcode 15.2; Feedback ID https://feedbackassistant.apple.com/feedback/13698735

Hello. I'm trying to change my SwiftUI Mac app icon's menu in the Dock, using the NSApplicationDelegate's applicationDockMenu(_ : ) function. However, it does not work: The delegate function is only called once, randomly after launch, and then never again, and it will not show any items in that menu I return. When I right-click the app in the Dock, only the macOS-supplied items are shown, and my App delegate function is not called. Here's the code I use inside my NSApplicationDelegate: func applicationDockMenu(_ sender: NSApplication) -> NSMenu? { let men = NSMenu() print("applicationDockMenu called") var it = NSMenuItem(title: "Test1", action: #selector(test(_:)), keyEquivalent: "") it.target = self men.addItem(it) it = NSMenuItem(title: "Test2", action: #selector(test(_:)), keyEquivalent: "") it.target = self men.addItem(it) return men } @objc func test(_ sender: NSMenuItem) { print("application dock menu custom item called") } Is there a SwiftUI modifier I should be using instead of the NSApp delegate method, or is this just not supported at this time in SwiftUI Mac apps? Thank you, - Matthias

Hello, How do I add a keyboard shortcut to an existing menubar command in a macOS AppKit app. Specifically, I would like to make the Delete shortcut under Edit work when I press command delete. How do I add a keyboard shortcut to the existing command? Thanks, Dev_101

Looking at having editable text as the detail view within a master detail interface. There are various examples out there that show how to build the NSViewRepresentable wrapper around NSTextView. e.g. https://developer.apple.com/forums/thread/125920 However, when I try to embed the NSViewRepresentable within a NavigationSplitView the various examples (and my own attempt) don't work properly. There seems to be a race condition competing to update the internal bindings. I also see updateNSView being called multiple times when only one event, say selection change, is called once. Using the SwiftUI TextEditor view actually works. (it is just so limited) When the master selected item is changed the change isn't automatically propagated through to update the Coordinator. That's because there isn't a delegate for "master did change". Take any of the TextViews on their own (not within a split view) and they work as you would expect. The SwiftUI TextEditor does this without any obvious connection to the master. So the first question is: has anybody solved this type of problem? I haven't yet found a link to the solution or a discussion on the internal trick to make this work. In principle the view structure is: NavigationSplitView { // master list List(selection : $selectedItem { } } content: { TextEditor(text: $selectedItem.text) // works // or CustomTextView(text: $selectedItem.text) // all examples I've found so far fail to properly display changes to the text when edited } My current thought is that the internal Coordinator needs to know that there has been a selection change so you can synchronise the significant change in the contents of the text binding. Again TextEditor doesn't need to know that. makeNSView is only called once, so there isn't any regeneration of the NSTextView that you could rely on. Have tried on both macOS and iOS and see the same results.

When running my app from Xcode Umlauts are all of a sudden broken in several places. The app has been out in the public w/o similar issues for years. For example, this is the result when entering a filename in my NSDocument-based app: So far I could only observe the bug when launching under Sonoma from Xcode but I'm worried this might be a general issue for users of the app running the release build. Any ideas about what happened in macOS 14.4..? Cheers, Jay

Recently, when I open a document in my app, it just adds a blank line to the Open Recent submenu. Attempting to select that line produces an error alert saying "The document “(null)” could not be opened. The file doesn’t exist." However, the document does appear in the global Recent Items menu. I tried rebooting. I'm not subclassing NSDocumentController or doing anything weird about opening files. Ideas? P.S. I tried logging in to a different account, and tried changing the bundle ID. Neither helped.

I modified an InputMethodKit example (fairly recent one from github, compiled fine and worked as expected on my machine as it was) to create a window with a WKWebView and the window doesn't load. I know that loadView is getting called, but the window never appears after calling showWindow on the window controller and there is a mysterious error in the console: bootstrap_check_in(): (os/kern) unknown error code (44c) From googling this it seems App Sandbox related, but I think I have everything set up correctly (App Sandbox on with outgoing connections allowed) Totally stumped, any help or ideas would be appreciated Here's the relevant code: View controller import Foundation import WebKit import AppKit class InputWindowViewController: NSViewController, WKUIDelegate { var webView: WKWebView! override func loadView() { NSLog("LoadView") webView = WKWebView() self.view = webView webView.uiDelegate = self webView.needsDisplay = true } override func viewDidLoad() { super.viewDidLoad() webView.load(URLRequest(url: URL(string:"https://www.apple.com")!)) } } Window controller import AppKit import Foundation import WebKit class InputWindowController: NSWindowController { var controller: InputWindowViewController? override init(window: NSWindow?) { controller = nil super.init(window: window) } override func loadWindow() { self.window = NSWindow(contentViewController: controller!) } required init?(coder: NSCoder) { controller = nil super.init(coder: coder) } } AppDelegate import Cocoa import InputMethodKit import WebKit // Necessary to launch this app class NSManualApplication: NSApplication { private let appDelegate = AppDelegate() override init() { super.init() self.delegate = appDelegate } required init?(coder: NSCoder) { // No need for implementation fatalError("init(coder:) has not been implemented") } } @main class AppDelegate: NSResponder, NSApplicationDelegate { var server = IMKServer() var candidates = IMKCandidates() var inputWindowController = InputWindowController() func applicationDidFinishLaunching(_ notification: Notification) { // Insert code here to initialize your application server = IMKServer(name: Bundle.main.infoDictionary?["InputMethodConnectionName"] as? String, bundleIdentifier: Bundle.main.bundleIdentifier) inputWindowController = InputWindowController() inputWindowController.controller = InputWindowViewController() inputWindowController.loadWindow() inputWindowController.showWindow(self) candidates = IMKCandidates(server: server, panelType: kIMKSingleRowSteppingCandidatePanel, styleType: kIMKMain) NSLog("tried connection") } func applicationWillTerminate(_ notification: Notification) { // Insert code here to tear down your application } } This code is probably awful in a lot of other ways I don't realize, but I wanted to get a webview window up before I put a bunch of time into this thing XCode 13.4 MacoOS 12.7.4

Hi there, My macOS AppKit/Cocoa app uses Swift and Objective-C, however I'm not using SwiftUI anywhere. Customers launching the app now receive an instant crash due to dyld not being able to locate SwiftUI: Library not loaded: /System/Library/Frameworks/SwiftUI.framework/Versions/A/SwiftUI Again, not using SwiftUI anywhere in my app, cannot find any project references in Xcode that mention SwiftUI - yet checking the generated binary with otool reveals that my app indeed appears to link against SwiftUI. Any idea what happened..? Thanks, Jay

Hi, Using purely swift programatically (no storyboard), I'm able to create an NSWindow like so: var window = NSWindow (contentRect: pInstruction.GetFrame (), styleMask: [.miniaturizable, .closable, .resizable, .titled], backing: .buffered, defer: false) window.title = "Some Title" window.contentViewController = MyViewController () let windowidentifier = NSUserInterfaceItemIdentifier ("WinID1") window.identifier = windowidentifier window.makeKeyAndOrderFront(nil) This works fine and I can see a window on screen. Later, when I want to access the window I can use a utility method: static func GetWindow(_ pWindowID: NSUserInterfaceItemIdentifier) -> NSWindow? { let windows = NSApp.windows for window in windows { if window.identifier == pWindowID { return window } } return nil } // Then I can call this function like so: let windowidentifier = NSUserInterfaceItemIdentifier ("WinID1") let window = GetWindow (windowidentifier) This also works fine. However, if I do window.setIsVisible(false) or window.orderOut (nil) to temporarily hide the window, then NSApp.windows returns an empty array and I'm not able to find the window object and my Utility method "GetWindow ()" doesn't work. Any suggestions on how I can find hidden windows?

My app uses CGEventTapCreateForPid to monitor keyboard events of a corresponding process. My app has already enabled the Accessibility permission, and AXIsProcessTrustedWithOptions returns true. However, CGEventTapCreateForPid returns null. What could be the problem? Does anyone know? I tested and found that if CGEventTapCreateForPid returns null, I can reset the Accessibility permission using tccutil reset Accessibility myapp_bundleid without restarting my app. But my app can still get the permission through AXIsProcessTrustedWithOptions

I have a basic Xcode project where I am adding a swift file with the below AppIntent. This causes the AppIntent action to be added in the Shortcuts app in MacOS. I wanted to know how is this AppIntent directly be able to add the Intent action in the shortcuts app. I have checked the build setting in the Xcode project but I did not find anything being generated that could have caused this. Can someone help me understand what internally happens that causes the action to be added to the shortcuts app? import AppIntents import SwiftUI @available(macOS 13, *) struct TWIntent: AppIntent { static let title: LocalizedStringResource = "TWMeditationIntent" static var description = IntentDescription("try adding this sample action as your TW shortcut") static var parameterSummary: some ParameterSummary { Summary("Get information on \(\.$TWType)") } // we can have multiple parameter of diff types @Parameter(title: "TWType", description: "The type to get information on.") var TWType: String func perform() async throws -> some IntentResult & ReturnsValue<String> & ProvidesDialog { NSLog(AppDelegate.TAG + "Inside perform() in MeditationIntent") return .result(value: TWType, dialog: "Logged a 15 minute break.\(TWType)") } }

I've been trying to follow the "Supporting Continuity Camera in Your Mac App" article to implement the "Import from iPhone or iPad" menu for my MacOS app. I've been able to replicate most of the article in a test AppKit application but cannot do the same in my SwiftUI application. I'm not sure how to get the "NSMenuItemImportFromDeviceIdentifier" identifier into a SwiftUI Menu or create a NSMenu with a NSMenuItem for a SwiftUI app. I'm also not sure how to handle receiving the image in the SwiftUI environment. Any advice you might have is appreciated. Thanks!