Dropdown list for type parameters?

[aaronrumple]

These are calls to the Revit AdWindows.dll if I’m correct. The AdWidnows.dll isn’t documented or supported, so that’s getting very far down the rabbit hole. It is basically the foundation pyRevit is built on to interact with the Revit UI.

Collapsed Panel

How exactly does pyRevit create collapsed ribbon panels? I am trying to recreate my custom pyRevit extension as a standard C# Revit addin, and I realized that collapsed panels are a pyRevit bonus, not in the API. I’m guessing some WPF wizardry. I tried looking in the pyRevit docs, forums, and code but wasn’t able to find anything.