说明：  Bmp文件是非常常用的位图文件，无论是游戏还是其他都被广泛使用。针对bmp文件的处理也有一堆现成的api进行调用，然而文件内部究竟怎样，如何自己来解析这样的文件呢
(Bmp file is a very commonly used bitmap file, whether it is games or other have been widely used. Bmp file for the deal also has a pile of off-the-shelf api calls, but what the internal documents, how to own such a document to resolve this)