ArcGIS Pro 2.7 API Reference Guide
Window Property

ArcGIS.Desktop.Framework.Events Namespace > WindowEventArgs Class : Window Property
Gets the pane being activated.
Syntax
public IFrameworkWindow Window {get;}
Public ReadOnly Property Window As IFrameworkWindow
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

WindowEventArgs Class
WindowEventArgs Members