Still waiting for SwiftUI to get Expansion Tooltips like those found in AppKit.

Basically, if you hover over truncated labels, like those often found in table views with columns, you get a tooltip looking overlay exactly over the label showing the entire string. It is super neat.

These are those little things that would surprise and delight all Mac users. The little things no one would think to do other than Apple on the Mac. I hope they come back.

Here is the list of feedback I've submitted for #AppKit in macOS Tahoe so far

- NSTokenField crashes due to NSGenericException caused by too many Update Constraints (FB18088608)
- Improve consistency between NSTextField and NSComboBox (FB18025262)
- NSUserInterfaceValidations is not called on NSTableView selection change when using the mouse (FB18110955)
- NSPasteboard privacy access dialog crashes if accessed from viewDidLoad (FB17604889)

(1/2)

Interesting.. autosaving (e.g., NSDocument's “autosavesInPlace") never succeeds and just hangs, but when calling save manually, all is good. #appkit

️ I have finally published the source repository for Coppice, @pilky's mind-mapping app, as per his final wishes.

It is provided as-is, without a license, to help prospective #AppKit developers learn from a longtime Mac developer who really sweated the details, and always went out of his way to provide help to people who needed it.

https://github.com/steventroughtonsmith/coppice
https://mastodon.social/@stroughtonsmith/114100571846787301

Proxygen app just got a new home at https://proxygen.app

The website has pretty extensive documentation about all the tools and setting up the proxy for common use cases.

I really need the design team at Apple to think real hard when making new design systems.

Visually stacked items on the Z-Axis does not do you favors when it comes to a 2D display.

You can’t distinguish what elements goes with what view. #macOSTahoe doubles down on layering on the Z-axis more than ever before.

Both Apple and 3rd party devs now have to come up with fixes to address this mess. Like the new NSBackgroundExtensionView in #AppKit.

#UIUX #WWDC25 https://martianbase.net/@mackuba/114684169532147576

So AppKit controls are now just wrappers on some custom/private SwiftUI views on macOS 26 Tahoe? Why Apple? Why? #apple #wwdc #wwdc25 #macos #tahoe #appkit #cocoa #development #swift #swiftui

Weeknotes for 2025, week 22: https://denisdefreyne.com/weeknotes/2025-w22/

Here’s how Send to Mac works in the new Proxygen app. You pair up the Mac app with your iOS device and it’s ready for traffic mirroring whenever you need it. It works even when the iOS device is locked!
https://proxygen.app

Seriously, this "stupid autocomplete that just predicts tokens" understands and explains AppKit and Core Animation better than probably most iOS devs would… that's good enough for me ¯\_(ツ)_/¯

Learning AppKit using ObjC in 2025 is quite difficult. Searching for solutions or answers brings so many unrelated things up.

I feel like this is something that should be mentioned in the documentation of Timer.init, not something you find out after a long session with ChatGPT and googling… #MacDev #AppKit

Overrode NSTableHeaderView and NSTableHeaderCell yesterday to get an Aqua appearance by custom drawing them myself in their respective draw functions... but refined it a lot more today!

(I removed most of the UI to call out the table view headers a bit more in this video)

Maaaaaan, AppKit is so fucking fun to use and make shit with.

New Proxygen version is now available. Almost every part of the app has been updated. Perhaps the biggest thing is that there is now a direct download at https://proxygen.app.

Jesus Christ... making commands for macOS/iPadOS apps with #SwiftUI is just beyond annoying/difficult. #AppKit was far easier to implement systemwide commands or commands that were active only in your current context. :(

DST change reminded me of that time QA discovered that, if you build a date from NSDateComponents, any missing items will not be set to zero, but will be set to the corresponding value from the current date and time.

Which meant that my March 30th, 12:00 would get random one-minute-drift like 12:00:59 because the user entered the date right before a minute change.

Makes sense for the date, but was a bit bewildering for the time, especially seconds.

I have added a new article to my own #HIG for Mac apps: Toolbar Guidelines.

This article goes over how to design, organize, and use built-in #NSToolbar & #NSToolbarItem objects and their features.

It also goes over system behaviors when toolbars are mixed with Sidebars, Inspectors, & multi-content layouts!

As a bonus, it also goes over bottom bars & accessory bars. Check it out and let me know what you think!

#AppKit #SwiftUI #macOS #MacOSX #Mac #UIUX #Toolbars

https://marioaguzman.github.io/design/toolbarguidelines/