计算机专业图形学作业，利用鼠标画出一个密闭区域，然后原地一点可以添充颜色，点击右建选择颜色-professional computer graphics operations, the use of the mouse to identify a confined area, then we can situ Tim filling color, Click on the right to choose colors construction

管理系统，能够存储，修改，添删文件，并能够支持txt文件输出-Management system, be able to store, modify, Tim censored documents and be able to support txt file output