Is it possible to know whether input is captured?

[hw762]

I am trying to use Nuklear as a top level UI of my game. However, I can't find a way to know whether an input is being used by the UI. For instance:

• Does mouse click hit an element of a window? I want to pass the input down a layer if not.
• Is key press or text input performed on a focused element? Similarly, I want to pass down input if not.

Does nuklear provide a way to extract this information?