利用缓冲进行文件复制，对于理解缓冲如何进行复制文件法是好的实例，在VS2005上编译通过，希望提供给大家，共同进步。-The use of buffer to copy files, for copying files to understand how the buffer is a good instance method, the VS2005 compiled through, we want to provide to the common progress.