Context Consider this protocol and class in Swift 5.9: protocol SpinnerHosting: AnyObject { var spinnerItem: SpinnerItem { get } } final class MyViewController: NSViewController { var ...

Why is the MyViewController does not get's shown in the window although the it's stated in the contentViewController: MyViewController() ? I'm not on storyboard or XIB and I don't wanna use a nib file....

The code should just view a "Hello, World!" in the window. The window appears but the text is not showing. Why is that? I can see that the window.makeKeyAndOrderFront(nil) even orders the ...

I used an Objective-C method to get the managedObjects on Xcode 9.2. Today I have a new iMac with Xcode 14.3 and the method is not called. -(void)awakeFromNib { _center = [NSNotificationCenter ...

I have a Foundation macOS App written in Swift. I'm trying to use SwiftUI Chart View in NSViewcontroller (tutorial here) but it's seems import Charts doesn't recognized and I obtain the error Cannot ...

I want to be able to retrieve the NSWindowController of a specific class of window opened by my app, returning the customer class of that window. The code walks through the window list, looking for ...

step1. I new a project in Xcode 13.2.1 with macOS App, swift and storyboard step2. The default NSViewController named InitialViewController. I add a button named open. step3. I add a NSViewController ...

I am trying to make NSViewControler work with NSView. I can't get myView to call any function in myView(NSView). myView?.myFunctionName does not work and for NSView I get a nil error when I try set ...

I have created a custom view that is intended to be loaded in some different windows. ActionWidgets is a subclass of NSViewController, complete with its own xib file and its own widget contents. In a ...

I am using NSView as a digital display screen. When I invoke [display setNeedsDisplay:YES] The view's drawrect function seems to entirely clear the view before redrawing it contents. This results in ...

I've a custom NSViewController subclass that implements the NSMenuItemValidation protocol. That works just fine, until I mark the view controller as @MainActor. I believed Apple marked all view ...

I am new in Swift and have a question. I have ViewController for my customer with a included a tableView that list their past invoice. When I double click on an invoice, it open the Invoice ...

I am trying to programmatically switch to another viewController scene when a certain event happens in Xcode for a MacOS app but am having trouble. The second view controller is in the same storyboard ...

There is a method in NSViewController called viewDidAppear. The docs say: This method is called after the completion of any drawing and animations involved in the initial appearance of the view. If ...

Either there is something weird in my project (Mojave, XCode10) or I am missing something very basic. This is my whole code: import Foundation import Cocoa class ViewController: NSViewController { ...