Hello, Sorry for the late reply. On 26/06/07, dtwebb@postpro.net <dtwebb@postpro.net> wrote:

struct mystuff { int foo; unsigned int bar : 1; }

In this case I'd just use (defcstruct mystuff (foo :int) (bar :uint)) and get the bit with (logand 1 (foreign-slot-value p 'mystuff 'bar)). For more complex cases I'd need to check the ABI docs. In order to achieve portability, it might be necessary to write some C glue code. HTH, -- Luís Oliveira http://student.dei.uc.pt/~lmoliv/