ArcGIS Pro 2.7 API Reference Guide
OnHidden Method (TOCActiveMapViewProviderPane)

ArcGIS.Desktop.Mapping Namespace > TOCActiveMapViewProviderPane Class : OnHidden Method
Called when the pane is hidden
Syntax
protected override void OnHidden()
Protected Overrides Sub OnHidden() 
Remarks
3rd party panes cannot be hidden. They are always closed
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

TOCActiveMapViewProviderPane Class
TOCActiveMapViewProviderPane Members