string class that can convert between wchar_t and char

[Bren]

Hi all,

I wonder if anyone knows of a string class out there that can do on
demand conversion from wchar_t to char?

We are writing an app that will need to be localized and cross
platform. At this point we are going with Unicode and wchar_t arrays.
I am considering using the string class.

We also use a lot of third party libraries, most of which prefer
ordinary char arrays.

I am hoping to find a class or macro that can do in-place conversion
of wchar_t to char arrays, ideally something similar to the MS W2A/A2W
macros. A string class that could accept/manage a wchar_t string and
return a char* with a call similar to c_str() would also be great as
well.

We are currently using a function which accepts a char* to an
allocated string and converts a wchar_t string into it, but this
requires code before (to alloc) and after (to free) every call. I'm
hoping for something a little easier to use.

Any suggestions?

 

[Default User]

Hi all,

I wonder if anyone knows of a string class out there that can do on
demand conversion from wchar_t to char?

What is the nature of the conversion?



Brian Rodenborn

 

[Thomas Wintschel]

Hi all,

I wonder if anyone knows of a string class out there that can do on
demand conversion from wchar_t to char?

We are writing an app that will need to be localized and cross
platform. At this point we are going with Unicode and wchar_t arrays.
I am considering using the string class.

We also use a lot of third party libraries, most of which prefer
ordinary char arrays.

I am hoping to find a class or macro that can do in-place conversion
of wchar_t to char arrays, ideally something similar to the MS W2A/A2W
macros. A string class that could accept/manage a wchar_t string and
return a char* with a call similar to c_str() would also be great as
well.

We are currently using a function which accepts a char* to an
allocated string and converts a wchar_t string into it, but this
requires code before (to alloc) and after (to free) every call. I'm
hoping for something a little easier to use.

Any suggestions?

This is off-topic and should be asked in a windows newsgroup but...

Try _bstr_t in the ATL package (include comutil.h (or comdef.h)).

Tom

 

[Bren]

What is the nature of the conversion?

Ummmmm, convert a string from wchar_t to char, and/or back?

 

[Peter van Merkerk]

I wonder if anyone knows of a string class out there that can do on

Ummmmm, convert a string from wchar_t to char, and/or back?

Not every possible wchar_t value can be represented by a char, hence
some conversion needs to take place. Depending on your requirements the
wchar_t to char conversion could be as simple as stripping the higher
order bits or as complicated as converting to an encoding that uses
escape codes to represent certain characters.