说明：  包含四个文件。Twain.h ＆Twain.cpp解释了扫描仪的调动过程（本人在原来基础上加上了分辨率的设置＆扫描仪驱动界面的屏蔽）另外两个文件讲解了前两个文件的用法
(included four documents. Twain.h & Twain.cpp explained Scanner mobilization process (I based on the original with the Resolution settings & Scanner Driver Interface shielding) another two documents on the previous two documents usage)