#ifndef __STRINGCAST_H__
#define __STRINGCAST_H__
#include <vector>
#include <string>
#include <cstring>
#include <cwchar>
#include <cassert>
template<typename Td>
Td string_cast(const wchar_t* pSource, unsigned int codePage = CP_ACP);
#endif // __STRINGCAST_H__
template<>
std::string string_cast( const wchar_t* pSource, unsigned int codePage )
{
assert(pSource != 0);
size_t sourceLength = std::wcslen(pSource);
if(sourceLength > 0)
{
int length = ::WideCharToMultiByte(codePage, 0, pSource, sourceLength, NULL, 0, NULL, NULL);
if(length == 0)
return std::string();
std::vector<char> buffer( length );
::WideCharToMultiByte(codePage, 0, pSource, sourceLength, &buffer[0], length, NULL, NULL);
return std::string(buffer.begin(), buffer.end());
}
else
return std::string();
}
このテンプレートを次のように使用します
PWSTR CurWorkDir;
std::string CurWorkLogFile;
CurWorkDir = new WCHAR[length];
CurWorkLogFile = string_cast<std::string>(CurWorkDir);
....
delete [] CurWorkDir;