这是一个CString的源代码，经过修改过，支持Ansi编码的字符串。比库的string更通俗易懂，是学习内存引用和自动垃圾回收的好代码！-This is a CString source code, after changes have been made to support the Ansi string encoding. Than the more user-friendly string library, is invoked to study memory and automati