Hi Brandon, Thanks for your help, CString will work great for Char arrays, but what about the 16bit-Word arrays? I was not clear in my previous post but the structures used in the nwrfcsdk library can use 8bit or 16 bit "chars" depending on a #define (#define SAPwithUNICODE). Reading another post on FFI in this mailing list I found a link to the following page http://haskell.org/haskellwiki/Modern_array_libraries with a section on StorableArrayS. I'm now trying to use this example code to get StorableArray to work. I will try to use Data.Encoding to convert Haskell StringS to ASCII or UTF16 ByteStringS. Then unpack those ByteStringS to Word8 list and populate StorableArrayS with the bytes. I hope it'll do the job for both Word8 and Word16 arrays. Olivier. On Fri, May 9, 2008 at 9:52 AM, Brandon S. Allbery KF8NH < allbery@ece.cmu.edu> wrote:
On 2008 May 9, at 9:42, Olivier Boudry wrote:
Of course it won't work as HArrayStruct in file HArrayStruct.hs uses Strings and String is not an instance of Storable.
Ideally I would need some sort of Storable array of char. Is Data.Storable.Array the type I'm looking for? Could someone point me to some code using the same kind of structures?
You want CString (Foreign.C.String).
-- brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery@kf8nh.com system administrator [openafs,heimdal,too many hats] allbery@ece.cmu.edu electrical and computer engineering, carnegie mellon university KF8NH