Re: [Haskell-cafe] A function callable from C

Hi Stefan, In that case, how do I marshall [String] to Ptr (Ptr CChar)? Thanks -John On 2/6/07, Stefan O'Rear <stefanor@cox.net> wrote:

You have to use a type that C's tiny brain understains. IANAWP but I'm guessing you want:

type ServiceMainClosure = DWORD -> Ptr (Ptr CChar) -> IO ()

foreign import ccall "wrapper" mkServiceMainClosure :: ServiceMainClosure -> IO (FunPtr ServiceMainClosure)