ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / TOCActiveMapViewProviderPane Class / OnHidden Method
Version

OnHidden Method (TOCActiveMapViewProviderPane)
Called when the pane is hidden
Syntax
protected override void OnHidden()
Remarks
3rd party panes cannot be hidden. They are always closed
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also