Obviously, Squeak WideString have 32 bits characters while Windows (and other 
OS i presume) have 16bits characters, and yes, OS byte ordering does matter.

You need a method asTwoByteArray defined like this in String

String>>asTwoByteArray
  | twoB |
  twoB := ByteArray new: self size*2.
  1 to: self size do: [:i |
    twoB unsignedShortAt: (2*i-1) put: (self at: i) asInteger].
  ^twoB

Nicolas

Le Vendredi 04 Août 2006 15:48, Ron Teitelbaum a écrit :
> John,
>
> Thanks for looking some more.  I had tried asWideString and received back a
> wideString class, but was confused by the bytes on the inspector.  Since
> the bytes were the same as a regular string I figured it was doing
> something wrong, like the other things I'd tried.
>
> So now that I understand that asByteArray forms bytes differently then what
> is in the instance inspector, I thought I'd try it.
>
> What I get is 'MY' asWideString asByteArray = a ByteArray(0 0 0 77 0 0 0
> 89)
>
> Trying that didn't work.
>
> I received a message from Torsten (Thank you!) that said he had a
> conversion to wide string for COM.  I tried that method to see what it
> returned. COMWideString fromString: 'MY' = a ByteArray(77 0 89 0).  I tried
> sending in the byteArray and BINGO! It worked.
>
> So the question is, are there multiple ways to do conversion to wide
> string, or is asWideString asByteArray doing it wrong?  Maybe there are
> ordering and byte count multiplatform things to consider?  (I'm on winXP,
> if it wasn't painfully obvious)
>
> Ron Teitelbaum
>
> > -----Original Message-----
> > From: squeak-dev-bounces at lists.squeakfoundation.org [mailto:squeak-dev-
> > bounces at lists.squeakfoundation.org] On Behalf Of John M McIntosh
> > Sent: Friday, August 04, 2006 3:23 AM
> > To: The general-purpose Squeak developers list
> > Subject: Re: FFI wide-character type?
> >
> > Oh sure after I spend an hour typing out a note about this.
> >
> > 'abc' asWideString asByteArray
> >
> > will do the right thing assuming your 'abc' String doesn't need
> > conversion, even so
> >
> > ('abcd' convertFromWithConverter: (MacRomanUnicodeTextConverter new))
> > asWideString asByteArray
> >
> > will also do the right thing, although it's a bit more expensive as
> > it rummages about deciding if the intermediate parts are String or
> > WideString
> >
> > On 3-Aug-06, at 7:21 PM, Ron Teitelbaum wrote:
> > > I found a solution that allows me to use ascii characters.
> >
> > --
> > ========================================================================
> > ===
> > John M. McIntosh <johnmci at smalltalkconsulting.com>
> > Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com
> > ========================================================================
> > ===