Foreign C with pointers

Luis Cabellos zhen.sydow at
Tue Dec 18 13:54:53 EST 2007


I am creating a binding to an existing library (lib*.a) from Haskell.

How can i bind a function that get a pointer?

e.g: I have in the c library.
int GetData( Data * d );

The steps that i need are:
1 - create the Data in Haskell
2 - create the foreign import sentence in a lib*.hs
3 - use the Data after the call

Where can i get a good tutorial about FFI? I try but it's too general (need i pair of
examples, i think)

Thanks a lot, Luis Cabellos
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