Passing scalars to C functions

Hi,

I'm fairly new to the XS business. I have managed to get the skeleton up 
(h2xs) and have also managed to write short functions that have ints as 
arguments and return strings, but I'd like to pass a full Perl scalar 
(my $cdb = pack('C*', 0x12, 0, 0, 0, 128, 0);) and retrieve the length 
(6) and the bytes themselves in the C function and also return such a 
scalar.

How do I do that?

Thanks,

Josef

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Josef Möllers (Pinguinpfleger bei FTS)
	If failure had no penalty success would not be a prize (T.  Pratchett)
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