文档的存取:说明如何使用串行化的保存和读取文件,从程序窗口可以实现字符串的输入和修改,并且可以使用自己的文件类型MYDOC(.MDC)进行文件的打开和保存-access to the documents : on how to use the serial to store and retrieve documents from the program window can be achieved string of entries and changes, and can use their