我应该为每个Paint请求创建新的Pens / Brushes还是在整个应用程序生命周期中保留它们？

I have an application that does a lot of drawing, let's pretend it's a Viso-like application. It has objects that have multiple sub-objects that are drawn, things can be connected, resized etc. Currently when I call paint on a particular sub-object or object, I do the following: of drawin