Introduction - If you have any usage issues, please Google them yourself
Support for the user to use the mouse to create and delete a 2-dimensional polygon object. Basic features include: object creation: support for users to use the mouse to specify each vertex position, and create a polygon. The object deletion: support for the user to select a polygon (saved with your polygon data structure) and delete. Object storage: design a data structure that stores each polygon vertices and edges, support for file archiving. Support for the user to select the color of the polygon to support the user moves the polygon support the user to change the position of the polygon a single vertex