Question Draw inspector like the Animator inspector when selecting class in editor window

Hi all,

I'm creating a objective manager, kinda like the Animator window. The window is working, but how do I draw a custom inspector for a class when clicking on it in the window? E.g., I have the base class Node. This node contains the rect for the box on the grid and some other stuff. How do I draw a custom inspector for it? Do I have to use a PropertyDrawer?

Any ideas are welcome!

Kind regards,

Rens