Introduction - If you have any usage issues, please Google them yourself
Add new graphics Step 1, the definition of structure in the GraphRecord unit 2, a collection of units in MyGraph (TClassGraph) added to the graph 3, MyGraph unit private statements of the graphics list, Create to create, Destory release 4, MouseUp add event list 5, MouseMove event of mobile graphics 6, DrawGraph the process of adding paint 7, Clear adding empty 8, preDel process 9, preFill process 10, preMove process 11, SaveToFile process 12, LoadFromFile process