converting std::string to std::wstring

[red floyd]

I have a an app that I'm writing which uses char and std::string. I'm using
a library which expects wchar_t arrays.

Is there a standard way to convert between std::string and std::wstring, or do
I need to use something like std::transform( )?

Thanks

[Ron Natalie]

Re: converting std::string to std::wstring


"red floyd" <no.spam@here.d ude> wrote in message news:I3ejb.539$ 0g6.117@newssvr 29.news.prodigy .com...[color=blue]
> I have a an app that I'm writing which uses char and std::string. I'm using
> a library which expects wchar_t arrays.
>
> Is there a standard way to convert between std::string and std::wstring, or do
> I need to use something like std::transform( )?
>[/color]
Well, there's no real PORTABLE way... it might not even be possible. The whole
concept of the mapping between mb to wc characters is highly implemetnation
dependent. C++ is rather schizoid about whether it's multibyte or wide character
based having a complete implementation of neither.

The best bet is the codecvt C++ class or the mbtowc family of functions in the
C library. All of these work on arrays of characters and not strings, you could
use transform to warp calls to these, but there's no canned function that
does what you want I suspect.