CircularGauge Class

Represents a gauge that can have a circular, semi-circular or any round scale.

Namespace: DevExpress.XtraGauges.Win.Gauges.Circular

Assembly: DevExpress.XtraGauges.v20.1.Win.dll

Declaration

public class CircularGauge :
    BaseGaugeWin,
    ICircularGauge,
    IWinGauge
Public Class CircularGauge
    Inherits BaseGaugeWin
    Implements ICircularGauge,
               IWinGauge

Related API Members

The following members accept/return CircularGauge objects:

Remarks

Circular gauges can be displayed as a part of a GaugeControl.

Circular gauges are appropriate for creating speedometers, tachometers, stopwatches, clocks, etc. The following image shows a set of circular gauges painted using various paint styles:

CircularGaugeSet

To specify the range of values displayed by a scale, use the ArcScale.MinValue and ArcScale.MaxValue properties. To specify the value to be indicated by a needle, associate the needle with a specific scale via its ArcScale property, and then set the value via the ArcScale.Value property.

See Circular Gauges to learn more.

Examples

The following example shows how to create a circular gauge.

In the example, a circular gauge is created using the GaugeControlBase.AddCircularGauge method. The default elements (a scale, background layer, needle and spindle cap) are added to the circular gauge via the CircularGauge.AddDefaultElements method. Then, some of them are customized in a specific manner.

The result is displayed below:

CreateCircularGauge_ex

using DevExpress.XtraGauges.Win;
using DevExpress.XtraGauges.Win.Gauges.Circular;
using DevExpress.XtraGauges.Core.Model;

GaugeControl gc = new GaugeControl();

// Add a circular gauge.
CircularGauge circularGauge = gc.AddCircularGauge();

// Add the default elements (a scale, background layer, needle and spindle cap).
circularGauge.AddDefaultElements();

// Change the background layer's paint style.
ArcScaleBackgroundLayer background = circularGauge.BackgroundLayers[0];
background.ShapeType = BackgroundLayerShapeType.CircularFull_Style3;

// Customize the scale's settings.
ArcScaleComponent scale = circularGauge.Scales[0];
scale.MinValue = 0;
scale.MaxValue = 100;
scale.Value = 25;
scale.MajorTickCount = 6;
scale.MajorTickmark.FormatString = "{0:F0}";
scale.MajorTickmark.ShapeType = TickmarkShapeType.Circular_Style2_2;
scale.MajorTickmark.ShapeOffset = -9;
scale.MajorTickmark.AllowTickOverlap = true;
scale.MinorTickCount = 3;
scale.MinorTickmark.ShapeType = TickmarkShapeType.Circular_Style2_1;

// Change the needle's paint style.
ArcScaleNeedleComponent needle = circularGauge.Needles[0];
needle.ShapeType = NeedleShapeType.CircularFull_Style3;

// Add the gauge control to the form.
gc.Size = new Size(250, 250);
gc.Parent = this;
See Also