printScreen实现截屏功能，能够截取屏幕然后将其保存为1.bmp文件。-Screenshots realize PrintScreen function that the interception of the screen and then save it as a 1.bmp document.

自动截图软件。可以把当前活动窗口内容存到一个图片中，相当于ALTER+PRTSCR-Automatic Screenshots Software. Able to keep the contents of the current active window to a picture, which is equivalent to ALTER+ PRTSCR