FSCopyObjectASync callback handler

FROM : Mike Abdullah
DATE : Sun Aug 06 01:36:15 2006

Does anyone here know how to use the callback method for 
FSCopyObjectASync in Cocoa?  I thought it would be as easy as 
creating a function in my controller like so:

static void statusCallback(FSFileOperationRef fileOp, const FSRef 
*currentItem, FSFileOperationStage stage, OSStatus error, 
CFDictionaryRef statusDictionary, void *info)

I start the operation like so:

err = FSCopyObjectAsync(fileOp,
                           &sourceFileRef,
                           &destinationDirectoryRef,
                           (CFStringRef)@"Desktop 2",
                           options,
                           statusCallback,
                           1.0,
                           NULL);

But clearly I'm doing something wrong.  The files copy no problem, 
but my callback never gets, um, called.  I'm assuming that this is 
due to the whole "objects" thing in Cocoa, or is there more to it?

Mike.