I have an object that is an NSRuleEditorDelegate for an NSRuleEditor whose nestingMode is NSRuleEditorNestingModeList. There are 8 different possible criteria. Each criterion is optional but at least 1 is required (ruleEditor.canRemoveAllRows = NO). Each criterion should only be added once. How can I limit adding a criterion for a row if it is already in the editor at a different row? Thanks!

Hi, in my macOS app I am modifying the mouse cursor image for some user interactions. I also have an NSSlider in the app which can be changed programmatically by setting its doubleValue. I've noticed that whenever the slider is set programmatically the custom mouse cursor is lost and changes back to an arrow. This doesn't happen if other controls are changed programmatically, e.g. the progress bar. Any ideas on how I can prevent this happening?

I have a Cocoa application and I'm trying to set up an NSImageView without using story board (using storyboard works just fine tho). Also, I'm kinda new to Cocoa so any advice is appreciated. Anyway so here's the deal, I created a class to encapsulate this image: @interface MyView : NSView { @private NSImageView* imageView; } @end @implementation MyView -(id) initWithFrame:(NSRect)frameRect { self = [super initWithFrame:frameRect]; if(self) { NSRect rect = NSMakeRect(10, 10, 100, 200); imageView = [[NSImageView alloc] initWithFrame:rect]; NSImage* image = [NSImage imageNamed:@"bob.jpeg"]; [imageView setImageScaling:NSImageScaleNone]; [imageView setImage: image]; [self addSubview: imageView]; } return self; } -(id) init { return [self initWithFrame:NSMakeRect(10, 10, 100, 100)]; } - (void)drawRect:(NSRect)dirtyRect { [super drawRect:dirtyRect]; // Drawing code here. } @end Now, in the view controller file, in the viewDidLoad I tried to load add this as a subview to get it to display my image: - (void)viewDidLoad { [super viewDidLoad]; MyView *customView = [[MyView alloc] init]; [self.view addSubview:customView]; } This kinda works, except that it loads the image twice, I ended up with two images instead of just one like I intended, what gives? what am I doing wrong here?

I want to make a simple droplet application. I've set the document types to include com.adobe.pdf files, and I am now receiving callbacks to the app delegate's application(_:open:) callback when I drop PDFs on the app icon… But not the first time. It doesn't matter how long I wait, or whether the app is already open—the first drop never triggers the callback. All subequent drops work as expected, and I get URLs to all the files dropped. What might be wrong? How can I debug this?

For a Cocoa project I have this table view controller: @interface TableViewController : NSObject <NSTableViewDataSource, NSTableViewDelegate> @property (nonatomic, strong) NSMutableArray *numbers; @property (nonatomic, strong) NSMutableArray *letters; @end #import "TableViewController.h" @implementation TableViewController - (NSMutableArray *)numbers { if (!_numbers) { _numbers = [NSMutableArray arrayWithArray:@[@"1", @"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9", @"10"]]; } return _numbers; } - (NSMutableArray *)letters { if (!_letters) { _letters = [NSMutableArray arrayWithArray: @[@"a", @"b", @"c", @"d", @"e", @"f", @"g", @"h", @"i", @"j"]]; } return _letters; } // NSTableViewDataSource Protocol Method - (NSInteger)numberOfRowsInTableView:(NSTableView *)tableView { return self.numbers.count; } // NSTableViewDelegate Protocol Method -(NSView *)tableView:(NSTableView *)tableView viewForTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row { NSString *identifier = tableColumn.identifier; NSTableCellView *cell = [tableView makeViewWithIdentifier:identifier owner:self]; if ([identifier isEqualToString:@"numbers"]) { cell.textField.stringValue = [self.numbers objectAtIndex:row]; } else { cell.textField.stringValue = [self.letters objectAtIndex:row]; } return cell; } In the storyboard I created a NSTableView and set up the connection, after running it I get what I expected: okay, cool, but I have a question: why is this working even though I haven't created a NSTableView as a property for my ViewController or for my TableViewController? Also, there's another problem, now I want to add a button to this window such that, every time I click it, a new item should be added to this table(for now it can be anything) So I created a button and a method for this and linked the action to the story board: -(IBAction) addNewNumber:(id)sender { [_numbers addObject:@"1234"]; [_letters addObject:@"testing"]; } Now, every time I click this button I can see that this method is indeed being called and that indeed IT IS adding a new member to these arrays, the thing is, the table is not being updated, what gives? Any advice on how I can fix this behavior?

Which method allows me to apply larger-than-default rounded corners to a macOS window while maintaining the system’s dynamic, contrasting border – similar to what’s seen in the Control Center popup? (Control Center has a corner radius of 16, the default system window is 10.) While I know how to closely achieve this effect manually for my plain panel, I'd like to leverage the built-in method and get it for free from the OS. I’ve spent way more time on this problem than I'm willing to admit, and searched extensively, but haven’t found any solution. I’d really appreciate any pointers. Thank you.

I need to add an accessory view with a text field to an NSAlert. This works as expected but as my app comes in different languages, the alert looks a bit different depending on the language used: So I wonder how I can make the text field automatically use the full width of the alert window. I tried to call the alert's layout method and then resize the text field but this seems not work in all cases. Any help would be highly appreciated. Thanks!

I have created a progress indicator to simulate some progressing download task in the dock icon. However, I can see the progress bar appearing in the dock icon but it is not getting updated when I invoked the updateProgress() method. Ideally it should have updated it, and I m not able to figure out the reason? I have creating the same NSProgressIndicator on an NSWindow and it works to update the progress bar with the same code. Anything that I m missing to understand here? Below is the code I m using: class AppDelegate: NSObject, NSApplicationDelegate { var progressIndicator: NSProgressIndicator! let dockTile = NSApp.dockTile func applicationWillFinishLaunching(_ notification: Notification) { // Step 1: Create a progress bar (NSProgressIndicator) progressIndicator = NSProgressIndicator(frame: NSRect(x: 10, y: 10, width: 100, height: 20)) progressIndicator.isIndeterminate = false progressIndicator.minValue = 0.0 progressIndicator.maxValue = 100.0 progressIndicator.doubleValue = 0.0 progressIndicator.style = .bar dockTile.contentView = progressIndicator dockTile.display() //// Update the progress bar for demonstration DispatchQueue.main.asyncAfter(deadline: .now() + 1) { self.updateProgress(50) } } func updateProgress(_ value: Double) { progressIndicator.doubleValue = value NSApp.dockTile.display() } }

I understand the mvc thing kinda, theres an array as a model, a tableview as a control, and the interface as a control (right?) so like, I drag an array controller on to the form display thing, assign a delegate to it the view and app module/header, add data to it and the tableview updates after I add a function to it? in vs the events are in the event browser, do I just copy and paste the code from the tutorial? how do I add controls and do all the advanced stuff? the documentation on developer.apple.com isnt that detailed, and most books are outdated or n/a since its objective c tutorials would be nice, some home grown method would be cool too thank you unidef warrell yashizzo

I need to create multiple share extensions for a single mac application, but all the share extensions are displaying the app's icon. Is it possible to customize different icons for each share extension?

My view controller has this property: @property NSMutableArray *tableCities; Whenever I press a button a new city object is added to this array, it consists of a dictionary of NSStrings containing the name and state of the city being added. Now, I have an NSPopUpButton that I'd like to bind to the city name of all cities in this NSMutableArray, how exactly can I achieve this with the Bindings Inspector?

I'm trying to send various user input events to a virtual machine. The app is built in SwiftUI, so the VZVirtualMachineView is part of a view controller wrapped in NSViewControllerRepresentable. Non-modified keystrokes and mouse clicks work fine, but I can't send modified keystrokes (e.g., ⌘F). These come through without the modifier (e.g., plain F). I also haven't been able to get mouse scroll wheel events to do anything in the VM. I installed a local event monitor with addLocalMonitorForEvents(matching:handler:). Before the VM boots and the VM view exists, typing myself generates events that I see with the monitor. After the VM boots, though, the monitor does not see any of my keystrokes. The monitor never sees any of my programmatically generated events. I am sending these all through NSWindow.sendEvent(_:). Is there anything special about VZVirtualMachineView that might affect how it handles injected events? It's obvious possible (likely) that I'm doing something wrong with how I build and/or send these events into the application. Can anyone point me to documentation or examples that aren't easily found through search engines?

Hi, I'm using NSPanel that his level is .popUpMenu and when I use .quickLookPreview in SwiftUI it make the the Quick Look behind the nspanel how can I fix it without change the level of NSPanel?

While trying to debug some weird drawing issues under macOS 14, I remembered that there was a comment in the AppKit Release notes related to drawing and NSView.clipsToBounds. AppKit Release Notes for macOS 14 Under the section titled NSView, the following statement is made: For applications linked against the macOS 14 SDK, the default value of this property is true. Apps linked against older SDKs default to false. Some classes, like NSClipView, continue to default to true. Is this statement possibly backwards? From what I can tell, under macOS 14 NSView.clipsToBounds now defaults to false. I came across this while trying to debug an issue where views that override drawRect with the intent of calling NSFillRect(self.bounds) with a solid color are, sometimes, briefly flickering because self.bounds is NSZeroRect, even though self.frame is not (nor is the dirtyRect). This seems to be happening when views are added as subviews to a parent view. The subviews, which override drawRect, periodically "miss" a repaint and thus flicker. This seems to happen when views are frequently added or removed, like what happens in a scrolling view that is "recycling" views as they go offscreen. Views that scroll into the viewport are added as subviews and, sometimes, briefly flicker. Replacing calls to drawRect with wantsUpdateLayer and updateLayer eliminates the flickering, which makes me think something is going astray in drawRect and the various rects you can use. This is with Xcode 15.4, linking against macOS 14.5 and running on macOS 14.6.1

In genealogy software, I have an NSView that displays a family tree where each person is in a subview. Before Sequoia, the subviews would draw in the order I add them to the parent NSView. For some reason, Sequoia calls drawRect in reverse order. For example, a tree with cells for son, father, and mother used to be drawn in that order, but Sequoia draws them as mother, father, and son. For static cell placement it would not matter, but these trees dynamically adjust as users change data or expand and contract branches from the tree. Drawing them in the wrong order messes up all the logic and many trees are corrupted. Has the new drawing order been implemented for some reason and can it be changed? Is it documented?

I have an NSMutableArray defined as a property in my ViewController class: @interface ViewController () @property NSMutableArray *tableCities; @end When the "Add" button is clicked, a new city is added: NSString* filePath = @"/tmp/city_test.jpeg"; NSDictionary *obj = @{@"image": [[NSImage alloc] initByReferencingFile:filePath], @"name": @"testCity", @"filePath": filePath}; [_tableCities addObject: obj]; Okay, this is fine, it is adding a new element to this NSMutableArray, now what I want is to somehow bind the "name" field of each city to my NSPopUpButton. So in storyboard I created an NSArrayController and tried to set its "Model Key Path" to my NSMutableArray as shown below: Then I tried to bind the NSPopUpButton to the NSArrayController as follows: but it doesn't work either, a city is added but the NSPopUpButton isn't displaying anything, what gives?

I have Swift code that accepts dragging a lowercase string from the TextEdit app. On the first drop, the text is accepted as is but, on the second drop, the first words are capitalised. Any ideas?

My app (Find Any File) behaves strangely on Sequoia: When the code calls the window's makeFirstResponder on the NSSearchField item in the window's toolbar, and if the toolbar is currently showing the small loupe icon, it should: Switch to showing an NSTextView in place of the loupe icon Make the text view the first responder so that the user can type in it. This used to work reliably before macOS 15, but in 15.0.1 and also the current 15.1 beta it often misses step 1 or or step 2. When it misses step 1, then the window's first responder reports back to it's set to the text field, but its frame is very narrow (width is 4 isntead of 192). And when it misses step 2, then the textview is visible but hasn't gained focus - instead, the main window is the first responder. This happening is quite random. I find no pattern. Even worse, after calling makeFirstResponder, if I check the window's first responder, it's always the expected NSTextView, even if I delay the check with dispatch_async(dispatch_get_main_queue(), ^{ …. So I cannot even reliably detect when this goes wrong in order to act on it. Has anyone else noticed this to happen in their apps?

Does Cocoa have documentation that describes why this functionality is not supported? To try it out is simple, create a default application that uses Objective C in XCode, add a button that toggles the window into fullscreen and opens a modal save-as dialog at the same time. The fullscreen transition will half-complete but kick the application out of fullscreen instantly. Is this expected behavior? The test application is attached below. The XCode test application

Hello fellow developers, I’m posting this short message because I’m trying to add WeatherKit to my application, but I’m running into a problem. I have correctly declared my application on Apple’s website under Certificates, IDs & Profiles, and I have checked WeatherKit. However in Xcode, I do not have the option to add WeatherKit in Signing & Capabilities. The option doesn’t appear even though I have the Automatically manage signing box checked. What can I do to resolve this issue? Thank you for your response.