I have this MWE right here -- it has a toolbar with a random action on it, in addition to a scroll view as the content of the window, with random labels attached inside. Since the redeisgn of the NSToolbar stuff in Tahoe, I expect the share button be able to "float" on top of the scrolled out content as shown as the first image at https://developer.apple.com/documentation/TechnologyOverviews/adopting-liquid-glass. #import <Cocoa/Cocoa.h> @interface AppDelegate : NSObject <NSApplicationDelegate, NSToolbarDelegate> @property (strong) NSWindow *window; @end @implementation AppDelegate - (void)applicationDidFinishLaunching:(NSNotification *)notification { NSRect frame = NSMakeRect(100, 100, 600, 400); self.window = [[NSWindow alloc] initWithContentRect:frame styleMask:(NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable | NSWindowStyleMaskMiniaturizable) backing:NSBackingStoreBuffered defer:NO]; [self.window setTitle:@"Scroll View + Toolbar Demo"]; NSToolbar *toolbar = [[NSToolbar alloc] initWithIdentifier:@"MainToolbar"]; toolbar.displayMode = NSToolbarDisplayModeIconAndLabel; toolbar.delegate = self; [self.window setToolbar:toolbar]; NSScrollView *scrollView = [[NSScrollView alloc] initWithFrame:self.window.contentView.bounds]; [scrollView setAutoresizingMask:(NSViewWidthSizable | NSViewHeightSizable)]; [scrollView setHasVerticalScroller:YES]; [scrollView setHasHorizontalScroller:YES]; NSView *documentView = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 1000, 1000)]; for (int i = 0; i < 10; i++) { NSTextField *label = [[NSTextField alloc] initWithFrame:NSMakeRect(50, 950 - i*80, 400, 40)]; [label setStringValue:[NSString stringWithFormat:@"Sample Label #%d", i + 1]]; [label setBezeled:NO]; [label setDrawsBackground:NO]; [label setEditable:NO]; [label setSelectable:NO]; [documentView addSubview:label]; } [scrollView setDocumentView:documentView]; [self.window setContentView:scrollView]; [self.window makeKeyAndOrderFront:nil]; } - (NSArray<NSToolbarItemIdentifier> *)toolbarAllowedItemIdentifiers:(NSToolbar *)toolbar { return @[NSToolbarFlexibleSpaceItemIdentifier, @"ShareItem"]; } - (NSArray<NSToolbarItemIdentifier> *)toolbarDefaultItemIdentifiers:(NSToolbar *)toolbar { return @[@"ShareItem"]; } - (NSToolbarItem *)toolbar:(NSToolbar *)toolbar itemForItemIdentifier:(NSToolbarItemIdentifier)itemIdentifier willBeInsertedIntoToolbar:(BOOL)flag { if ([itemIdentifier isEqualToString:@"ShareItem"]) { NSToolbarItem *shareItem = [[NSToolbarItem alloc] initWithItemIdentifier:itemIdentifier]; shareItem.toolTip = @"Share this content"; shareItem.image = [NSImage imageNamed:NSImageNameShareTemplate]; shareItem.target = self; shareItem.action = @selector(shareAction:); return shareItem; } return nil; } - (void)shareAction:(id)sender { NSLog(@"Share button clicked!"); // Here you could present a sharing service picker NSSharingServicePicker *picker = [[NSSharingServicePicker alloc] initWithItems:@[@"Hello, world!"]]; [picker showRelativeToRect:[sender view].bounds ofView:[sender view] preferredEdge:NSRectEdgeMinY]; } @end int main(int argc, const char * argv[]) { @autoreleasepool { NSApplication *app = [NSApplication sharedApplication]; AppDelegate *delegate = [[AppDelegate alloc] init]; [app setDelegate:delegate]; [app run]; } return EXIT_SUCCESS; } But it doesn't and produces this image: https://imgur.com/a/kA7MzIe I've tried to set various settings to make the top bar transparent, but all it does is that it makes it completely opaque instead. How can I make the share button float on top of the content? P.S. the app is a single-file app, compile it with clang -fobjc-arc -framework Cocoa -o ScrollApp toolbar.m

Here's the result of a blank app from Xcode: https://imgur.com/a/1hMmwbO now there's only 3 items in the storyboard configuration: https://imgur.com/a/iGWWQE7 So I try to replicate that in code (some of this reproducer was generated by ChatGPT however the same issue I'm descrbing has been hit when using Python to objc bridges to construct the GUI) by specifying these 3 actions appropriately and see if the rest pops up. The code below changes the activation policy so that when I run ./a.out from the terminal it doesn't show as a window of Terminal but a separate app #import <Cocoa/Cocoa.h> @interface AppDelegate : NSObject <NSApplicationDelegate> @end @implementation AppDelegate - (void)applicationDidFinishLaunching:(NSNotification *)notification { // Build main menu NSMenu *mainMenu = [[NSMenu alloc] initWithTitle:@"MainMenu"]; // --- App menu with Quit --- NSMenuItem *appMenuItem = [[NSMenuItem alloc] init]; NSMenu *appMenu = [[NSMenu alloc] initWithTitle:@"App"]; NSMenuItem *quitItem = [[NSMenuItem alloc] initWithTitle:@"Quit" action:@selector(terminate:) keyEquivalent:@"q"]; [appMenu addItem:quitItem]; [appMenuItem setSubmenu:appMenu]; [mainMenu addItem:appMenuItem]; // --- Window menu with only Minimize, Zoom, Bring All to Front --- NSMenuItem *windowMenuItem = [[NSMenuItem alloc] initWithTitle:@"Window" action:NULL keyEquivalent:@""]; NSMenu *windowMenu = [[NSMenu alloc] initWithTitle:@"Window"]; [windowMenu addItem:[[NSMenuItem alloc] initWithTitle:@"Minimize" action:@selector(performMiniaturize:) keyEquivalent:@"m"]]; [windowMenu addItem:[[NSMenuItem alloc] initWithTitle:@"Zoom" action:@selector(performZoom:) keyEquivalent:@""]]; [windowMenu addItem:[NSMenuItem separatorItem]]; [windowMenu addItem:[[NSMenuItem alloc] initWithTitle:@"Bring All to Front" action:@selector(arrangeInFront:) keyEquivalent:@""]]; [windowMenuItem setSubmenu:windowMenu]; [mainMenu addItem:windowMenuItem]; [NSApp setMainMenu:mainMenu]; // Optional demo window (remove if you want zero windows) NSWindow *w = [[NSWindow alloc] initWithContentRect:NSMakeRect(200,200,400,200) styleMask:(NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable | NSWindowStyleMaskMiniaturizable) backing:NSBackingStoreBuffered defer:NO]; [w setTitle:@"Demo"]; [w makeKeyAndOrderFront:nil]; [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular]; } - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender { return YES; } @end int main(int argc, const char * argv[]) { @autoreleasepool { AppDelegate *delegate = [AppDelegate new]; [NSApplication sharedApplication]; [NSApp setDelegate:delegate]; return NSApplicationMain(argc, argv); } } Now, I only see 3 items that's literally specified https://imgur.com/a/LylRsaJ So, what allows interface builder to auto-add these extra items as opposed by creating it in code? Is there something in this reproducer of the Window menu that is missing that needs to make it happen programatically? Thanks! All tests done on macOS Tahoe

I can compile this #import <Cocoa/Cocoa.h> @interface AppDelegate : NSObject <NSApplicationDelegate> @property (strong) NSWindow *window; @property (strong) NSSlider *slider; @end @implementation AppDelegate - (void)applicationDidFinishLaunching:(NSNotification *)notification { // Window size NSRect frame = NSMakeRect(0, 0, 400, 300); NSUInteger style = NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable; self.window = [[NSWindow alloc] initWithContentRect:frame styleMask:style backing:NSBackingStoreBuffered defer:NO]; [self.window setTitle:@"Centered Slider Example"]; [self.window makeKeyAndOrderFront:nil]; // Slider size CGFloat sliderWidth = 200; CGFloat sliderHeight = 32; CGFloat windowWidth = self.window.frame.size.width; CGFloat windowHeight = self.window.frame.size.height; CGFloat sliderX = (windowWidth - sliderWidth) / 2; CGFloat sliderY = (windowHeight - sliderHeight) / 2; self.slider = [[NSSlider alloc] initWithFrame:NSMakeRect(sliderX, sliderY, sliderWidth, sliderHeight)]; [self.slider setMinValue:0]; [self.slider setMaxValue:100]; [self.slider setDoubleValue:50]; [self.window.contentView addSubview:self.slider]; } @end int main(int argc, const char * argv[]) { @autoreleasepool { NSApplication *app = [NSApplication sharedApplication]; AppDelegate *delegate = [[AppDelegate alloc] init]; [app setDelegate:delegate]; [app run]; } return 0; } with (base) johnzhou@Johns-MacBook-Pro liquidglasstest % clang -framework Foundation -framework AppKit testobjc.m and get this neat liquid glass effect: https://github.com/user-attachments/assets/4199493b-6011-4ad0-9c9f-25db8585e547 However if I use pyobjc to make an equivalent import sys from Cocoa import ( NSApplication, NSApp, NSWindow, NSSlider, NSMakeRect, NSWindowStyleMaskTitled, NSWindowStyleMaskClosable, NSWindowStyleMaskResizable, NSBackingStoreBuffered, NSObject ) class AppDelegate(NSObject): def applicationDidFinishLaunching_(self, notification): # Create the main window window_size = NSMakeRect(0, 0, 400, 300) style = NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable self.window = NSWindow.alloc().initWithContentRect_styleMask_backing_defer_( window_size, style, NSBackingStoreBuffered, False ) self.window.setTitle_("Centered Slider Example") self.window.makeKeyAndOrderFront_(None) # Slider size and positioning slider_width = 200 slider_height = 32 window_width = self.window.frame().size.width window_height = self.window.frame().size.height slider_x = (window_width - slider_width) / 2 slider_y = (window_height - slider_height) / 2 self.slider = NSSlider.alloc().initWithFrame_(NSMakeRect(slider_x, slider_y, slider_width, slider_height)) self.slider.setMinValue_(0) self.slider.setMaxValue_(100) self.slider.setDoubleValue_(50) self.window.contentView().addSubview_(self.slider) if __name__ == "__main__": app = NSApplication.sharedApplication() delegate = AppDelegate.alloc().init() app.setDelegate_(delegate) app.run() I get a result shown at https://github.com/user-attachments/assets/7da022bc-122b-491d-9e08-030dcb9337c3 which does not have the new liquid glass effect. Why is this? Is this perhaps related to the requirement that you must compile on latest Xcode as indicated in the docs? Why, is the compiler doing some magic?

How does one know the fitting width of a UIDatePicker in a selector hooked up with UIControlEventValueChanged? By fitting width, I mean the width of the grey background rounded box displayed with the date -- I need to get the width of that whenever the date is changed.

How does one check if a file descriptor is guarded? Is there any guarded FD numbers that are determinate? I've seen 12 being NPOLICY in a few things -- is there documentation for which FDs might be guarded? Thanks. The platform is Mac Catalyst.

Is it theoretically possible to: Build an app with Mac Catalyst without the App Sandbox entitlement and Distribute it outside the Mac App Store (w/ notarization)? Thank you!

Is it possible to have some additional content at Versions/A/ in a macOS Framework bundle that is not in any of the standard folders? Will there be any side-effects during signing and notarization? The reason is it'd be a lot easier in my use case to be able to put content here instead of the Resources folder.

How can I disable Hardened Runtime in Xcode only when signing ad hoc? If I make a new project, Xcode will say Disabling hardened runtime with ad-hoc codesigning. at the beginning of the build logs. However, somehow my project isn't doing this -- it's still hardening the runtime when ad-hoc signing. What should I do to debug this?

How can I get the macOS version from the Mac Catalyst version? We're building Info.plist files ourselves but we need a way to programatically (using shell scripts) derive the LSMinimumSystemVersion key needed from the iOS deployment target.