ArcGIS Pro 2.7 API Reference Guide
IMapViewOverlayControl Interface
Members 

ArcGIS.Desktop.Mapping Namespace : IMapViewOverlayControl Interface
Implement to add an overlay control over a MapView or use MapViewOverlayControl.
Syntax
public interface IMapViewOverlayControl 
Public Interface IMapViewOverlayControl 
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

IMapViewOverlayControl Members
ArcGIS.Desktop.Mapping Namespace