In Windows Rhino this will mean a new document has been created or opened. In Mac Rhino this can mean the same thing as well it can indicate switching from one active open document to another.

Namespace: Rhino
Assembly: RhinoCommon (in RhinoCommon.dll) Version: Rhino 6.0

C#

void ActiveRhinoDocChanged(
	RhinoDocObserverArgs e
)

VB

Sub ActiveRhinoDocChanged ( 
	e As RhinoDocObserverArgs
)

e

Type: Rhino.RhinoDocObserverArgs
[Missing documentation for "M:Rhino.IRhinoDocObserver.ActiveRhinoDocChanged(Rhino.RhinoDocObserverArgs)"]

Supported in: 5D58w

IRhinoDocObserver Interface
Rhino Namespace