Are custom controls supported in Unity?

Specifically I have a pie chart and bar chart control that I created in WPF.

I would like to port them to NoesisGUI but before doing so wanted to be sure that customer controls are supported in Unity... I see a c++ example and hoping that c# unity would work the same.

Preliminary tests appear that custom controls are supported... functional pie chart. I should have just tried rather than asking.

They are not fully supported because virtual methods in C# are not properly being called from C++ (our core implementation is C++). It is planned to be solved in v1.2.8 (Trello board).

Although many of the things can be done using UserControl + Templating.