Layers

Layer is a visual element that contains different objects (e.g. images) to define a visual presentation of a DigitalGaugeControl and its elements.

When a new layer is added to the Digital Gauge control, it is painted behind all other gauge elements. This is because the LayerOptions.ZIndex property is set to -100 by default. If you want to bring this layer to the front, set the ZIndex property to a greater value.

The images below show two layers that were added to the gauges of the SevenSegmentsView and MatrixView8x14 types. The first layer defines a gauge background, while the second layer is painted in the foreground.

DigitalGauge_Layers

DigitalGauge_MatrixLayers

The following table lists the main properties affecting element behavior and appearance.

Characteristics Members
Availability DigitalGaugeControl.Layers
Visibility LayerBase.Visible
Size SymbolViewBase.Width,SymbolViewBase.Height
Appearance DigitalGaugeControl.Model,DigitalGaugeLayer.Presentation,Foreground,Background
Behaviour GaugeLayerBase.Options