C++的wchar_t和string的互转
内容
```c++
//wchar_t转string
std::string a031::Wchar_tToString(wchar_t *wchar)
{
std::string szDst;
wchar_t * wText = wchar;
DWORD dwNum = WideCharToMultiByte(CP_OEMCP, NULL, wText, -1, NULL, 0, NULL, FALSE);// WideCharToMultiByte的运用
char *psText; // psText为char*的临时数组，作为赋值给std::string的中间变量
psText = new char[dwNum];
WideCharToMultiByte(CP_OEMCP, NULL, wText, -1, psText, dwNum, NULL, FALSE);// WideCharToMultiByte的再次运用
szDst = psText;// std::string赋值
delete[]psText;// psText的清除
return szDst;
}
wchar_t * StringToWchar_t1(const std::string & str)
{
wchar_t * m_chatroommmsg = new wchar_t[str.size() * 2]; //
memset(m_chatroommmsg, 0, str.size() * 2);
setlocale(LC_ALL, "zh_CN.UTF-8");
swprintf(m_chatroommmsg, str.size() * 2, L"%S", str.c_str());
return m_chatroommmsg;
}
```
```c++
//wchar_t转string
std::string a031::Wchar_tToString(wchar_t *wchar)
{
std::string szDst;
wchar_t * wText = wchar;
DWORD dwNum = WideCharToMultiByte(CP_OEMCP, NULL, wText, -1, NULL, 0, NULL, FALSE);// WideCharToMultiByte的运用
char *psText; // psText为char*的临时数组，作为赋值给std::string的中间变量
psText = new char[dwNum];
WideCharToMultiByte(CP_OEMCP, NULL, wText, -1, psText, dwNum, NULL, FALSE);// WideCharToMultiByte的再次运用
szDst = psText;// std::string赋值
delete[]psText;// psText的清除
return szDst;
}
wchar_t * StringToWchar_t1(const std::string & str)
{
wchar_t * m_chatroommmsg = new wchar_t[str.size() * 2]; //
memset(m_chatroommmsg, 0, str.size() * 2);
setlocale(LC_ALL, "zh_CN.UTF-8");
swprintf(m_chatroommmsg, str.size() * 2, L"%S", str.c_str());
return m_chatroommmsg;
}
```