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]

Hello,

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

Karthik

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]

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

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 WideCharToMultiByte. 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]

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]

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

That's a good suggestion.

(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?)

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]

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

#include <comdef.h>

std::string myString = _bstr_t (myBSTR);

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