At Thu, 1 Sep 2011 15:20:27 -0700, John Clements wrote: > > Note that the code ignores the result of `TransformProcessType', which > > is a bad idea. If you remove the `void' wrapper, what number result > > gets printed on your machine? > > > > Looks like it's -50.
-50 means "bad argument". Apple's docs say struct ProcessSerialNumber { unsigned long highLongOfPSN; unsigned long lowLongOfPSN; }; but "MacTypes.h" says struct ProcessSerialNumber { UInt32 highLongOfPSN; UInt32 lowLongOfPSN; }; and those aren't the same on a 64-bit system. Maybe the docs that I found are too old or are only meant to apply to 32-bit systems. Can you remind me whether you're using a 32-bit or 64-bit build? When I try the 64-bit build, then it fails in the way you describe until I fix the `_ProcessSerialNumber' declaration: (define-cstruct _ProcessSerialNumber ([highLongOfPSN _uint32] [lowLongOfPSN _uint32])) _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev