使用MFC做的一个TXT文本的分本工具，分割时指定单文件大小，核心是一个多字节字符的处理函数。-TXT using MFC to do a sub-text of this tool, split a single file size is specified when the core is a multi-byte character handling functions.

MFC下实现excel的合并和拆分等操作 行列名的设置等操作-MFC under the excel merge and split the operation of the column name and other operations