convert a BSTR data type to std::string

[Karthik]

Hello,

How can I convert a BSTR data type to std::string??? Thanks a much!

Karthik

[Howard]

Re: convert a BSTR data type to std::string


"Karthik" <karthik.t@gmai l.com> wrote in message
news:1121289967 .573625.124080@ g43g2000cwa.goo glegroups.com.. .[color=blue]
> Hello,
>
> How can I convert a BSTR data type to std::string??? Thanks a much!
>
> Karthik
>[/color]

Ask in a microsoft newsgroup. I believe BSTR is a microsoft-defined type.

(But, have you tried simply assigning from your BSTR variable to your
std::string variable, or creating a std::string with the BSTR as the
std::string's constructor's parameter?)

-Howard

[Heinz Ozwirk]

Re: convert a BSTR data type to std::string


"Karthik" <karthik.t@gmai l.com> schrieb im Newsbeitrag
news:1121289967 .573625.124080@ g43g2000cwa.goo glegroups.com.. .[color=blue]
> How can I convert a BSTR data type to std::string??? Thanks a much![/color]

A BSTR - if you are talking about the Microsoft thing - basically is a
unicode string. To convert it into an std::string you have to use functions
like wcstombs or WideCharToMulti Byte. But you should better use std::wstring
instead of std::string, or you cannot convert all possible characters in a
BSTR.

HTH
Heinz

[Jonathan Mcdougall]

Re: convert a BSTR data type to std::string

> How can I convert a BSTR data type to std::string??? Thanks a much!

Seems a BSTR is a double-byte string, so you won't be able to put it in
a std::string. Use std::wstring instead. Something like

void f(BSTR ms_str)
{
std::wstring ws(ms_str);
}

should work, but you would be better served in a microsoft newgroup.

Jonathan

[Default User]

Re: convert a BSTR data type to std::string



Howard wrote:[color=blue]
> "Karthik" <karthik.t@gmai l.com> wrote in message
> news:1121289967 .573625.124080@ g43g2000cwa.goo glegroups.com.. .[color=green]
> > Hello,
> >
> > How can I convert a BSTR data type to std::string??? Thanks a much!
> >
> > Karthik
> >[/color]
>
> Ask in a microsoft newsgroup. I believe BSTR is a microsoft-defined type.[/color]

That's a good suggestion.
[color=blue]
> (But, have you tried simply assigning from your BSTR variable to your
> std::string variable, or creating a std::string with the BSTR as the
> std::string's constructor's parameter?)[/color]

I'm guessing that it probably won't work, based on what I read here:

http://www.codeproject.com/string/bstrsproject1.asp

This may help the OP.



Brian

[Phlip]

Re: convert a BSTR data type to std::string

Karthik wrote:
[color=blue]
> How can I convert a BSTR data type to std::string??? Thanks a much![/color]

#include <comdef.h>

std::string myString = _bstr_t (myBSTR);

Future BSTR questions belong on some other newsgroup blah blah blah...

--
Phlip

http://www.c2.com/cgi/wiki?ZeekLand