截屏编辑器，截屏后的区域可以编辑，输入正方形，椭圆形，画线，输入文字等功能，是截屏与编辑结合的典型例子-Mimic the function of the QQ screenshot, screen shots, after the area can be edited, enter the square, oval, draw a line, enter text and other features, screen shots an