宽字节wchar_t* 转换 单字节char*

// 将 宽字节wchar_t* 转换 单字节char*

inline std::string UnicodeToAnsi( const wchar_t* szStr )

{

int nLen = WideCharToMultiByte( CP_ACP, 0, szStr, -1, NULL, 0, NULL, NULL );

if (nLen == 0)

{

return NULL;

}

//char* pResult = new char[nLen];

std::string res;

res.resize(nLen);

WideCharToMultiByte( CP_ACP, 0, szStr, -1, (char*)res.c_str(), nLen, NULL, NULL );

return res;

}