这是一个包含有三个类的代码集，分别用来处理三类不同的出错信息，定制的出错信息、CRT内建的或者Win32 API出错信息。CBasicError用来处理定制的出错信息，CLbraryError用来处理C运行时库的出错信息，CWin32APIError用来处理Win32 API出错信息。-contains three types of code sets, respectively, to deal with three different kinds of error messages, custom error messages, built-in CRT or Win32 API error messages. CBasicError to handle custom error messages, CLbraryError to handle C Runtime Library error messages, CWin32APIError to deal with the Win32 API error messages.