123
I'm looking for a method, or a code snippet for converting std::string to LPCWSTR
This question is tagged with
c++
winapi
~ Asked on 2008-08-26 01:46:31
145
Thanks for the link to the MSDN article. This is exactly what I was looking for.
std::wstring s2ws(const std::string& s)
{
int len;
int slength = (int)s.length() + 1;
len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0);
wchar_t* buf = new wchar_t[len];
MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, buf, len);
std::wstring r(buf);
delete[] buf;
return r;
}
std::wstring stemp = s2ws(myString);
LPCWSTR result = stemp.c_str();
~ Answered on 2008-08-26 02:36:58
133
The solution is actually a lot easier than any of the other suggestions:
std::wstring stemp = std::wstring(s.begin(), s.end());
LPCWSTR sw = stemp.c_str();
Best of all, it's platform independent.
~ Answered on 2010-11-09 23:12:21
12
If you are in an ATL/MFC environment, You can use the ATL conversion macro:
#include <atlbase.h>
#include <atlconv.h>
. . .
string myStr("My string");
CA2W unicodeStr(myStr);
You can then use unicodeStr as an LPCWSTR. The memory for the unicode string is created on the stack and released then the destructor for unicodeStr executes.
~ Answered on 2008-08-26 02:30:25
2
I prefer using standard converters:
#include <codecvt>
std::string s = "Hi";
std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
std::wstring wide = converter.from_bytes(s);
LPCWSTR result = wide.c_str();
Please find more details in this answer: https://stackoverflow.com/a/18597384/592651
Update 12/21/2020 : My answer was commented on by @Andreas H . I thought his comment is valuable, so I updated my answer accordingly:
codecvt_utf8_utf16is deprecated in C++17.- Also the code implies that source encoding is UTF-8 which it usually isn't.
- In C++20 there is a separate type std::u8string for UTF-8 because of that.
But it worked for me because I am still using an old version of C++ and it happened that my source encoding was UTF-8 .
~ Answered on 2020-10-26 06:39:47
-1
Instead of using a std::string, you could use a std::wstring.
EDIT: Sorry this is not more explanatory, but I have to run.
Use std::wstring::c_str()
~ Answered on 2008-08-26 01:52:42
-2
string myMessage="helloworld";
int len;
int slength = (int)myMessage.length() + 1;
len = MultiByteToWideChar(CP_ACP, 0, myMessage.c_str(), slength, 0, 0);
wchar_t* buf = new wchar_t[len];
MultiByteToWideChar(CP_ACP, 0, myMessage.c_str(), slength, buf, len);
std::wstring r(buf);
std::wstring stemp = r.C_str();
LPCWSTR result = stemp.c_str();
~ Answered on 2017-01-20 07:05:42
-3
LPCWSTR lpcwName=std::wstring(strname.begin(), strname.end()).c_str()
~ Answered on 2019-04-19 09:31:38