宽字符字符串和多字节字符串之间转换

MFC中，使用Edit控件显示中文遇到乱码。自己写了两个函数进行转化

// CString转换成string
string CDictDlg::CString2string(CString &str)
{
    char *pCh = new char[MY_EDIT_TEXT_LENG];
    // W(2B) -> A(B)
    WideCharToMultiByte(CP_ACP, 0, str.GetBuffer(), -1, pCh, str.GetLength() * 2, NULL, NULL);
    pCh[str.GetLength() * 2] = 0;
    string sRet(pCh);
    delete pCh;

    return sRet;
}

// string转换成wchar_t *类型
wchar_t *CDictDlg::string2pwc(string &str)
{
    wchar_t *pwRet = new wchar_t[MY_EDIT_CONTRL_LENG];
    const char *pcCh(str.c_str());
    int cchWineChar = MultiByteToWideChar(CP_ACP, 0, pcCh, -1, pwRet, 0);
    MultiByteToWideChar(CP_ACP, 0, pcCh, -1, pwRet, cchWineChar);

    return pwRet;
}

参考MSDN

WideCharToMultiByte()

int WideCharToMultiByte(
  __in       UINT CodePage,
  __in       DWORD dwFlags,
  __in       LPCWSTR lpWideCharStr,
  __in       int cchWideChar,
  __out_opt  LPSTR lpMultiByteStr,
  __in       int cbMultiByte,
  __in_opt   LPCSTR lpDefaultChar,
  __out_opt  LPBOOL lpUsedDefaultChar
);

 MultiByteToWideChar()

int MultiByteToWideChar(
  __in       UINT CodePage,
  __in       DWORD dwFlags,
  __in       LPCSTR lpMultiByteStr,
  __in       int cbMultiByte,
  __out_opt  LPWSTR lpWideCharStr,
  __in       int cchWideChar
);