ArcGIS Pro 2.8 API Reference Guide
WindowEventArgs Class
Members 

ArcGIS.Desktop.Framework.Events Namespace : WindowEventArgs Class
The active window.
Syntax
public sealed class WindowEventArgs : System.EventArgs 
Public NotInheritable Class WindowEventArgs 
   Inherits System.EventArgs
Inheritance Hierarchy

System.Object
   System.EventArgs
      ArcGIS.Desktop.Framework.Events.WindowEventArgs

Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

WindowEventArgs Members
ArcGIS.Desktop.Framework.Events Namespace