ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / MapTool Class / KeepControlOpenAfterDeactivation Property

KeepControlOpenAfterDeactivation Property
Optional property to allow tool's embeddable control to remain open after the tool is deactivated.
Syntax
protected bool KeepControlOpenAfterDeactivation {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.2 or higher.
See Also