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std::string vs std::wstring

webwraith · 2009-01-22T06:44:29

I want to use the wstring version of the C++ stdlib, but I have a couple of worries. First, will the c_str() function work 'correctly', i.e.; will it return a pointer to a zero-terminated array of wchar_t? And will this work in the wide-character win32 api functions? I know that win32 hides whether you're using the wide- or ASCII- character strings by default, but I wanted to know if something like the following is correct; std::wstring wstr = "hello, blah,blah..."; // for example ... CreateDirectory(wstr.c_str(),NULL);

General and Gameplay Programming Programming

Started by webwraith January 20, 2009 01:16 PM

11 comments, last by benryves 15 years, 3 months ago

Rydinare

487

January 21, 2009 01:55 PM

Quote:Original post by adeyblue
It's the first link (pastebin) in my post above.

Gotcha. Sorry, missed that earlier. That's pretty slick. It hadn't occurred to me to try to use such a technique to call the proper version. Nice work.

That will easily take care of the Win32 cases, because of the consistent style. I suppose the technique could also be applied to standard C functions with some care.

webwraith

239

Author

January 22, 2009 05:07 AM

Would there be any advantage, then, to using std::wstring over std::string? Would an application that just outputs characters to the bottom half of a byte value be recognized as UTF-8, instead of/as well as ASCII?

benryves

2,001

January 22, 2009 06:44 AM

If you're just storing the string then I don't know if that would be a problem. What would be a problem is if you were manipulating the string in some way (substrings, case conversions, retrieving the length) as the routines would be operating on the byte rather than character level.

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std::string vs std::wstring

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