When writing a program, you often need to reload onpaint, which is difficult to locate. Now there is a simple method.

I wrote a class that can be loaded like a control and called draw during painting. I still think it is quite convenient. What is missing now is the support of the designer, it would be perfect if there is one.
 
With regard to the support of the designer, I am having trouble creating a designer interface by myself, but the changes made by my designer to the shapes set cannot be automatically generated.Code, Trouble.
(In fact, you have a table controlSource codeHe has a designer, but there is no time to read it. The source code is too large)