ArcGIS Pro 2.2 API Reference Guide
BackgroundSymbol Property (CIMBackgroundCallout)

ArcGIS.Core.CIM Namespace > CIMBackgroundCallout Class : BackgroundSymbol Property
Gets and sets the symbol used to draw the background. If null, the background doesn't draw.
Syntax
Public Property BackgroundSymbol As CIMPolygonSymbol
public CIMPolygonSymbol BackgroundSymbol {get; set;}
Requirements

Target Platforms:Windows 10, Windows 8.1, Windows 7

See Also

Reference

CIMBackgroundCallout Class
CIMBackgroundCallout Members