CComBstr CString 截取字符串

1 CComBSTR bstr;
2     pDoc->get_FileName(&bstr);
3     CString cstring(bstr);
4     int len = cstring.GetLength();
5     int pos = cstring.ReverseFind(\'\\\');
6     CString tmpstr = cstring.Right(len-pos-1);
7     MessageBoxW(NULL, tmpstr, L"", 0);