typedef void(* DataHCompletionProcPtr) (
    Ptr request, 
    SInt32 refcon, 
    OSErr err
);

You would declare your function like this if you were to name it MyDataHCompletionCallback:

void MyDataHCompletionCallback (
    Ptr request, 
    SInt32 refcon, 
    OSErr err
);

© 2000 Apple Computer, Inc. (Last Updated 6/26/2000)