How to Get the Display Name with the Display ID in Mac OS X?

by

This gives you the localized display name:

static void KeyArrayCallback(const void* key, const void* value, void* context) { CFArrayAppendValue(context, key);  }

- (NSString*)localizedDisplayProductName
{
    NSDictionary* screenDictionary = [[NSScreen mainScreen] deviceDescription];
    NSNumber* screenID = [screenDictionary objectForKey:@"NSScreenNumber"];
    CGDirectDisplayID aID = [screenID unsignedIntValue];            
    CFStringRef localName = NULL;
    io_connect_t displayPort = CGDisplayIOServicePort(aID);
    CFDictionaryRef dict = (CFDictionaryRef)IODisplayCreateInfoDictionary(displayPort, 0);
    CFDictionaryRef names = CFDictionaryGetValue(dict, CFSTR(kDisplayProductName));
    if(names)
    {
        CFArrayRef langKeys = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks );
        CFDictionaryApplyFunction(names, KeyArrayCallback, (void*)langKeys);
        CFArrayRef orderLangKeys = CFBundleCopyPreferredLocalizationsFromArray(langKeys);
        CFRelease(langKeys);
        if(orderLangKeys && CFArrayGetCount(orderLangKeys))
        {
            CFStringRef langKey = CFArrayGetValueAtIndex(orderLangKeys, 0);
            localName = CFDictionaryGetValue(names, langKey);
            CFRetain(localName);
        }
        CFRelease(orderLangKeys);
    }
    CFRelease(dict);
    return [(NSString*)localName autorelease];
}

More Related Contents:

  1. @class vs. #import
  2. How to read data from NSFileHandle line by line?
  3. NSInvocation for Dummies?
  4. Number of occurrences of a substring in an NSString?
  5. Hidden Features of Xcode
  6. @synthesize vs @dynamic, what are the differences?
  7. What exactly is a so called “Class Cluster” in Objective-C?
  8. Why are umbrella frameworks discouraged? [closed]
  9. Regular expressions in an Objective-C Cocoa application
  10. How to Write OS X Finder plugin
  11. View-based NSTableView with rows that have dynamic heights
  12. NSMutableArray – force the array to hold specific object type only
  13. Best way to remove from NSMutableArray while iterating?
  14. Difference between NSString literals
  15. Cocoa Custom Notification Example
  16. Dispatch queues: How to tell if they’re running and how to stop them
  17. Embed font in a mac bundle
  18. What is the cost of using autorelease in Cocoa?
  19. What is an NSCFDictionary?
  20. NSTextField waits until the end of a loop to update
  21. NSString is integer?
  22. How to convert An NSInteger to an int?
  23. NSTimeZone: what is the difference between localTimeZone and systemTimeZone?
  24. What is the simplest implementation of Markdown for a Cocoa application?
  25. How to create transparent notification window?
  26. NSPrivateQueueConcurrencyType Not saving properly
  27. Properties and Instance Variables in Objective-C
  28. Chaining Core Animation animations
  29. Objective C – getting line number or full stack trace from debugger error?
  30. Listen to a value change of my text field

Leave a Comment