ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Desktop.Mapping.Controls Namespace / MapControl Class / AddOverlay Method / AddOverlay(Geometry,CIMSymbolReference,Double,Double) Method
The geometry of the overlay.
The symbol to use for 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
    AddOverlay(Geometry,CIMSymbolReference,Double,Double) Method
    In This Topic
    Add an overlay graphic to the map control.
    Syntax
    Public Overloads Function AddOverlay( _
       ByVal geom As Geometry, _
       ByVal symbol As CIMSymbolReference, _
       ByVal referenceScale As Double, _
       ByVal showThrough As Double _
    ) As IDisposable

    Parameters

    geom
    The geometry of the overlay.
    symbol
    The symbol to use for 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

    ArcGIS Pro version: 3.2 or higher.
    See Also