包含CDib类，可以打开、显示、存储图片，包含霍夫检测直线的类，可以大致检测出图片中的直线，且有利于二次开发。-Contains CDib class, you can open, display, store pictures, including detection of straight line Hough class, we can roughly detect the image of a straight line, and is conducive to redevelopmen