ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / IMapViewOverlayControl Interface / CanResizeHorizontally Property

CanResizeHorizontally Property (IMapViewOverlayControl)
Indicates that left and right resize handles should be attached to the control.
Syntax
bool CanResizeHorizontally {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.1 or higher.
See Also