The problem is not with multibyte2wide.

It's that your write() method takes 'unsigned char const*', whereas winstl::multibyte2wide's char type is 'wchar_t'. On VC6 these are the same (because wchar_t is a typedef); on VC8 these are different because wchar_t is a full-fledged type.

:-)
  "Adi Shavit" <adish@gentech.co.il> wrote in message news:euh6qd$4mi$1@digitalmars.com...
  Hi,

    I'm getting this compilation error on MSVC++ 2005:


    h:\adish\dev\audiostream\audiostream\audiostream\audiostream.hpp(56) : error C2664: 'std::streamsize audiostream::audio_sink<SinkType>::write(const unsigned short *,std::streamsize)' : cannot convert parameter 1 from 'stlsoft::winstl_project::multibyte2wide<CCH>' to 'const unsigned short *'
            with
            [
                SinkType=boost::iostreams::sink
            ]
            and
            [
                CCH=256
            ]
            No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called


  See context here.
  Essentially I try to pass a winstl::a2w() to a method expecting const unsigned short* s.
  It works fine on MSVC++6.

  Any thoughts?
  Thanks,
  Adi

The question is, I think, why the wide string write() is not 'wchar_t const*'?

If it has to be for some reason, then you're going to need to do some casting. Included is a modified form of your audiostream.hpp that fixes it (and compiles with VC8).

If it doesn't, then it's a real simple fix.
  "Matthew Wilson" <matthew@hat.stlsoft.dot.org> wrote in message news:euha08$84t$1@digitalmars.com...
  The problem is not with multibyte2wide.

  It's that your write() method takes 'unsigned char const*', whereas winstl::multibyte2wide's char type is 'wchar_t'. On VC6 these are the same (because wchar_t is a typedef); on VC8 these are different because wchar_t is a full-fledged type.

  :-)
    "Adi Shavit" <adish@gentech.co.il> wrote in message news:euh6qd$4mi$1@digitalmars.com...
    Hi,

      I'm getting this compilation error on MSVC++ 2005:


      h:\adish\dev\audiostream\audiostream\audiostream\audiostream.hpp(56) : error C2664: 'std::streamsize audiostream::audio_sink<SinkType>::write(const unsigned short *,std::streamsize)' : cannot convert parameter 1 from 'stlsoft::winstl_project::multibyte2wide<CCH>' to 'const unsigned short *'
              with
              [
                  SinkType=boost::iostreams::sink
              ]
              and
              [
                  CCH=256
              ]
              No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called


    See context here.
    Essentially I try to pass a winstl::a2w() to a method expecting const unsigned short* s.
    It works fine on MSVC++6.

    Any thoughts?
    Thanks,
    Adi

> The problem is not with multibyte2wide.
I never, for a moment, thought it was. :-)
> It's that your write() method takes 'unsigned char const*', whereas winstl::multibyte2wide's char type is 'wchar_t'. On VC6 these are the same (because wchar_t is a typedef); on VC8 these are different because wchar_t is a full-fledged type.
Ah right! I thought it might be something like that. Thanks a lot. It was my oversight integrating with Boost Iostreams.

Thanks,
Adi

Hi,
> The question is, I think, why the wide string write() is not 'wchar_t const*'?
The answer is, my oversight.
In fact, once I changed it to wchar_t it works on both VS6 and VS2005.
> If it has to be for some reason, then you're going to need to do some casting. Included is a modified form of your audiostream.hpp that fixes it (and compiles with VC8).
>  If it doesn't, then it's a real simple fix.
Thanks for the fix, but the real simple fix did the trick.
Adi

Cool. I suspected it might. :-)

"Adi Shavit" <adish@gentech.co.il> wrote in message news:eujqtc$4kn$1@digitalmars.com...
> Hi,
> > The question is, I think, why the wide string write() is not 'wchar_t
> > const*'?
> The answer is, my oversight.
> In fact, once I changed it to wchar_t it works on both VS6 and VS2005.
> > If it has to be for some reason, then you're going to need to do some casting. Included is a modified form of your audiostream.hpp that fixes it (and compiles with VC8).
> >
> > If it doesn't, then it's a real simple fix.
> Thanks for the fix, but the real simple fix did the trick. Adi
>