I have installed all the OSX RhinoCommon stuff as per the McNeel docs onto a Catalina Mac. I open my Windows plugin code on Catalina Visual Studio, and there are a bunch of issues. I have decided that the approach I have taken on Windows is probably not going to work on OSX, so I am going back to square one.
My main (dockable) panel in the Windows version is a UserContol. There does not seem to be a UserControl object on Rhino for Mac. What should I use instead please (keeping in mind I ultimately want the same code to run on Windows and OSX).