Delphi图像选区“蚂蚁线"源码，也就是在为图像增加一个虚线边框，这个会流动的虚线框就叫做蚂蚁线，在PhotoShop里被看做“选区”，以表示选中的图像区域，便于进行效果处理。-Ant line " source of the the Delphi image constituencies" , which is in the image to add a dotted border, this will flow dashed box called ant line, is