Alex, I am proposing letting the runtime handle the fact the object does not respond to the selector. So, under this assumption I am inside one of two methods: -doesNotRespondToSelector: or

You might want to consider using valueForUndefinedKey: and parse it to know which value you care about, and then return the value through NSValue, which can encapsulate any value, although a

Well, I’m guessing here, but can’t you construct the method and use a perform selector, get the result and return it? It seems like you are making methods, performing them, then need to perform

Alex, Thanks for the idea. I not sure how that helps me get the return value back to the original caller. Am I missing your point? Here’s more details, in pseudo code // Controller class SEL

Would it be possible to put them in an array or dictionary as NSStrings and use performSelector on one of them if it is present within the array or dict?

I have a certain group of selectors that all follow a strict naming convention, -(Status)parseXYZ -(Status)parseRST All have one line that does the same thing and return a scalar (enum) as a

The action name is part of the “view” layer in model-controller-view architecture. But most of the actual undoable ’stuff’ is in the model. So I usually set the action name at the top level

As usual, the answer was staring me in the face. The old code was synchronous, the new is asynchronous. I was restoring the view after the call to -dragImage… because that used to keep control

Hi all, I’m updating some legacy code that currently uses the ‘classic’ way to drag stuff, namely [NSView dragImage:at:offset:event:pasteboard:source:slideBack:]; This code has been

Thanks — it is a bit kludgey, but might do in a pinch, as you say. In some cases I can set a flag on my drawing to tell it that the context should be a PDF at that time, since I am responsible for

I played around with it and found that bitmap (easy to create) and PDF contexts have the same CFTypeID so no help there, and that there doesn’t appear to be a public context [sub-]type property. One

I need to determine whether I am drawing into a CGPDFContext or a different context at runtime. In AppKit, I can use [NSGraphicsContext currentContextDrawingToScreen], but this is code that is passed

I have a CoreData-based app where I am experimenting with inter-device synchronization using iCloudKit. At the moment, I am running in Development mode and am using an iPad and a MacCatalyst app as

Screw it. I've switched the migration progress window to a regular window and now present it modally. This kind of window WILL appear during state restoration, unlike a palette which has been sent

I needed to add many attributes to my CoreData model. Filling in these attributes will happen during migration of old docs, which means loading all the files that each asset points to. Since it can

macOS 15.4; Xcode Version 11.4 (11E146) I have a window with a WkWebView. This WkWebView should handle a special scheme. The only way to do this that I know of, is: @IBOutlet var wkWebView:

Thanks for pointing out that method. I tried it, but it didn't work. Not sure when the scrollbar is being restored to a stupid value. But, I've added predicate restoration, and that solves it. I also

You can send reflectScrolledClipView: to the NSScrollView instance after state restoration. But it should basically never be necessary to call this method manually, so even if it fixes it, something

You can send reflectScrolledClipView: to the NSScrollView instance after state restoration. But it should basically never be necessary to call this method manually, so even if it fixes it, something

Hmm. I'd have to restore the search predicate. That should be doable, but it rubs me the wrong way that a document, when restored, only shows the last subset of items instead of showing everything.