我基于这两个转换函数和StackOverflow上的答案,但是来回转换不起作用:
std::wstring MultiByteToWideString(const char* szSrc)
{
unsigned int iSizeOfStr = MultiByteToWideChar(CP_ACP, 0, szSrc, -1, NULL, 0);
wchar_t* wszTgt = new wchar_t[iSizeOfStr];
if(!wszTgt) assert(0);
MultiByteToWideChar(CP_ACP, 0, szSrc, -1, wszTgt, iSizeOfStr);
std::wstring wstr(wszTgt);
delete(wszTgt);
return(wstr);
}
std::string WideStringToMultiByte(const wchar_t* wszSrc)
{
int iSizeOfStr = WideCharToMultiByte(CP_ACP, 0, wszSrc, -1, NULL, 0, NULL, NULL);
char* szTgt = new char[iSizeOfStr];
if(!szTgt) return(NULL);
WideCharToMultiByte(CP_ACP, 0, wszSrc, -1, szTgt, iSizeOfStr, NULL, NULL);
std::string str(szTgt);
delete(szTgt);
return(str);
}
[...]
// はてなブ in utf-16
wchar_t wTestUTF16[] = L"\u306f\u3066\u306a\u30d6\u306f\u306f";
// shows the text correctly
::MessageBoxW(NULL, wTestUTF16, L"Message", MB_OK);
// convert to UTF8, and back to UTF-16
std::string strUTF8 = WideStringToMultiByte(wTestUTF16);
std::wstring wstrUTF16 = MultiByteToWideString(strUTF8.c_str());
// this doesn't show the proper text. Should be same as first message box
::MessageBoxW(NULL, wstrUTF16.c_str(), L"Message", MB_OK);