ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / MappingExtensions Class / AddOverlayAsync Method / AddOverlayAsync(MapView,CIMGraphic,Double,Double) Method
The view to add the overlay.
The graphic to be added to the overlay.
Map reference scale or -1
Visibility factor for showing the overlay through other objects when obscured in 3D.
Valid range is [0..1], any other value will be treated as 0 (not visible).

In This Topic
    AddOverlayAsync(MapView,CIMGraphic,Double,Double) Method
    In This Topic
    Add an overlay graphic to the map view.
    Syntax
    Public Overloads Shared Function AddOverlayAsync( _
       ByVal mapView As MapView, _
       ByVal graphic As CIMGraphic, _
       ByVal referenceScale As Double, _
       ByVal showThrough As Double _
    ) As Task(Of IDisposable)

    Parameters

    mapView
    The view to add the overlay.
    graphic
    The graphic to be added to the overlay.
    referenceScale
    Map reference scale or -1
    showThrough
    Visibility factor for showing the overlay through other objects when obscured in 3D.
    Valid range is [0..1], any other value will be treated as 0 (not visible).

    Return Value

    An object that when disposed will remove the overlay.
    Remarks
    When the referenceScale is not equal to -1, the overlay will be created in real world units relative to the provided map reference scale (referenceScale). Otherwise, the overlay will be created in units of points. This is only supported in 2D.
    Requirements

    Target Platforms: Windows 11, Windows 10, Windows 8.1

    See Also