Classes
 ClassDescription
 GaugeNeedle A class that is responsible for drawing the needle part of the gauge component
 GaugeUtils Graphics Utilities It is provided in the samples for your reference, in scenarios where you wish to customize the skins.
 GradientArc A Circular shape with gradient.
 GradientCircle A circle that draws a gradient, surrounding rim, and a shadow.
 RangeInfo A class that holds information about start, end and color of the ranges of the gauge control