Hello, I am trying to write FFI wrappers for a dynamic library in windows. I would like to get some help in how to go about doing things. For example for this C function, the import and wrapper I came up with are listed below. -- STATUS LNPUBLIC NSFDbOpen (char far *PathName, DBHANDLE far *rethDB); foreign import stdcall "nsfdb.h NSFDbOpen" nsfDbOpen' ::CString -> Ptr CInt -> IO CInt type DbHandle = CInt nsfDbOpen :: String -> IO DbHandle nsfDbOpen dbname = alloca $ \ptr -> do db <- newCString dbname rc <- nsfDbOpen' db ptr handle <- peek ptr if rc /= 0 then error "dbopen failed" else return handle Q: Does that look ok? Is the db <- newCString leaking ? Q: How would I import and call a function with signature like this calling C code: char str1[MAX_PATH]; char str2[MAX_PATH]; GetStringValues( str1, str2); called C function signature is: void GetStringValues( char* s1, char* s2); i.e. how would the haskell import (and the wrapper function) look like in situation like this (where I have to pass preallocated char array to C code and get it filled up)? Appreciate your time. thanks pj