Background Layer
A Background Layer defines the background of the circular gauge.
Every new background layer is painted behind all other gauge elements, because its BaseLeafPrimitive.ZOrder property is set to 1000 (the default setting). To bring this layer to the front of other gauge elements (or paint it above other layers, if there are any), set the ZOrder property to a lower value.
For example, the following picture illustrates a background layer that is overlapped by the scale whose ZOrder is set to 0 (the default setting).
A background layer object is an instance of the ArcScaleBackgroundLayer class.
The table below lists the main properties that affect element behavior and appearance.
| Characteristics | Members |
|---|---|
| Appearance | ArcScaleBackgroundLayer.ShapeType,BaseLeafPrimitive.Shader |
| Geometry | ArcScaleBackgroundLayer.Size,BaseLeafPrimitive.ZOrder,ArcScaleBackgroundLayer.ScaleCenterPos |