To fix unexpected autofill or contacts in macOS context menus using C++ and Objective-C++, check these areas:

1. Context Menu Implementation:

   • Ensure menus only show relevant items for the context.

2. Event Handling:

   • Verify correct handling of right-click events.

3. Input Field Attributes:

   • Disable unwanted autofill attributes (e.g., autocomplete="off").

4. Custom Menu Items:

   • Remove unwanted system items and ensure custom items are properly defined.

5. Debugging and Logging:

   • Add logs to trace unwanted menu additions.
   • Use Xcode Instruments for profiling.

6. Frameworks and Libraries:

   • Check third-party libraries for side effects.
   • Update to latest versions.

Here is an example of how to implement a context menu in C++ with Objective-C++:

// ViewController.h
#import <Cocoa/Cocoa.h>

@interface ViewController : NSViewController <NSMenuDelegate>
@end

// ViewController.mm
#import "ViewController.h"

@implementation ViewController

• (void)viewDidLoad {
  [super viewDidLoad];

  NSMenu *menu = [[NSMenu alloc] initWithTitle:@"Context Menu"];
  [menu setDelegate:self];

  NSMenuItem *menuItem = [[NSMenuItem alloc] initWithTitle:@"Custom Action"
  action:@selector(customAction)
  keyEquivalent:@""];
  [menu addItem:menuItem];

  [self.view setMenu:menu];
  }

• (void)customAction {
  // Handle custom action
  }

• (void)menuNeedsUpdate:(NSMenu *)menu {
  [menu removeAllItems];
  NSMenuItem *menuItem = [[NSMenuItem alloc] initWithTitle:@"Dynamic Action"
  action:@selector(customAction)
  keyEquivalent:@""];
  [menu addItem:menuItem];
  }

@end

// main.cpp
#include <Cocoa/Cocoa.h>

int main(int argc, const char * argv[]) {
return NSApplicationMain(argc, argv);
}

In this example, ViewController implements the NSMenuDelegate protocol to dynamically update the context menu. The menuNeedsUpdate: method ensures that the context menu only contains relevant items. This example combines C++ (in main.cpp) with Objective-C++ (in ViewController.mm), which is commonly used in macOS development.

BR Lars Herold