I’m a Cocoa guy and try to avoid Carbon if possible Let’s see if I can help.

Objective-C is a object orientated language. These means you are executing functions on objects. The Carbon based APIs are in some sense object orientated as well. The main difference is that you are using a number of functions where you provide the data structure in the first parameter.

Let’s see how some Cocoa code converts to Carbon code:
// allocate an Array - there are two function calls: alloc and init here
NSMutableArray* a = [[NSMutableArray alloc] init];
// allocate a string object - the next line defines a string object (compareable to CFStringRef)
NSString* value = @”some string”;
// here we call the function addObject
[a addObject: @”some string”];

In Carbon it would look like this:
CFMutableArrayRef a = CFArrayCreateMutable(NULL, 0, NULL);
CFStringRef value = CFSTR(”some string”);
CFArrayAppendValue(a, value);

So it’s pretty straight forward to convert Cocoa code to Carbon code as long as there are matching methods in both frameworks.
You can even mix Carbon and Cocoa code pretty easy.

NSArray is “toll-free bridged” with its Core Foundation counterpart, CFArray. What this means is that the Core Foundation type is interchangeable in function or method calls with the bridged Foundation object, providing you cast one type to the other. Therefore, in an API where you see an NSArray * parameter, you can pass in a CFArrayRef, and in an API where you see a CFArrayRef parameter, you can pass in an NSArray instance. This arrangement also applies to your concrete subclasses of NSArray. See Carbon-Cocoa Integration Guide for more information on toll-free bridging.

hope this helps.

I’d really, really, really like to be able to understand that - but I’m a pure Carbon head and don’t do Cocoa.
Any chance of a quick Carbon guide?

eg: when i hold the vol+ key, i want to get a stream of vol+ key events, at the same pace as the keyboard “autoKey” events.

I’ve built the RemoteControlWrapper and launched the app it will not recognize the Apple Remote after I click on Listen to Remote. No other apps are running and the remote works fine when using iTunes, etc. No errors are reported in the Console log. I’m on the first generation 24″ iMac. Any ideas?