I've searched everywhere I can think of, but I'm not finding much help on how to design Cocoa frameworks for Leopard that support both retain/release and garbage collection. Can anybody supply a good link apart from the Apple documentation?
Here's a specific question: My frameworks contain classes that declare instance variables derived from CFType. For example, CGEventRef and AXUIElementRef. In reading the "Instance variables" topic in the "Core Foundation Variables" section of the "Garbage Collection Programming Guide," I see the statement, "If you declare a Core Foundation structure as an instance variable, the compiler regards it only as an opaque structure pointer, not as an object.... To indicate that a Core Foundation structure should be treated as a collectable object, you use the __strong keyword." The example given declares a CFType-derived object as an instance variable in the interface part of a class like this: __strong CFDateRef myDate; So, I guess my frameworks should declare ... __strong CGEventRef myEvent; __strong AXUIElementRef myUIElement; ... if I am going to advertise the frameworks as supporting both retain/release and garbage collection. Is that right? It's not that the documentation cited above is ambiguous. It's just that I feel very much at sea in the garbage collection world, and I crave a little more hand-holding than I'm finding so far. Plus, I've already released one of my frameworks publicly, and it does NOT use the __strong keyword. I'm guessing I should get a revision out there pronto -- although I hasten to add that I know the framework works fine with a retain/release application. If anybody cares to take a look and tell me about any other failings in the framework from the GC perspective, it's installed as part of my free PreFab Event Taps Testbench product, at <http://prefabsoftware.com/eventtapstestbench/>. I've already included -finalize methods to complement the -dealloc methods. I don't think I need to do anything else, but I'm far from sure. -- Bill Cheeseman - [EMAIL PROTECTED] Quechee Software, Quechee, Vermont, USA www.quecheesoftware.com PreFab Software - www.prefabsoftware.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
