CustomArcScaleNeedlePresentation Class
Contains presentation settings that specify the needle appearance.
Namespace: DevExpress.Xpf.Gauges
Assembly: DevExpress.Xpf.Gauges.v25.1.dll
NuGet Package: DevExpress.Wpf.Gauges
Declaration
Example
This example demonstrates how to define a custom needle presentation.
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:GaugesDemoApp"
xmlns:dxga="http://schemas.devexpress.com/winfx/2008/xaml/gauges"
x:Class="GaugesDemoApp.MainWindow"
Title="MainWindow" Height="300" Width="300">
<Grid>
<dxga:CircularGaugeControl>
<dxga:CircularGaugeControl.Scales>
<dxga:ArcScale ShowMinorTickmarks="False" ShowLine="True">
<dxga:ArcScale.Needles>
<dxga:ArcScaleNeedle Value="85" IsInteractive="True">
<dxga:ArcScaleNeedle.Presentation>
<dxga:CustomArcScaleNeedlePresentation>
<dxga:CustomArcScaleNeedlePresentation.NeedleTemplate>
<ControlTemplate>
<Grid RenderTransformOrigin="0, 0.5" Margin="0,0,2,0" Height="24" Opacity="0.5">
<Path HorizontalAlignment="Right" Fill="Black" Height="17" Width="20" VerticalAlignment="Center"
Data="M0,0 L20,8 L0,16 z"/>
<Rectangle Fill="Black" Height="8" VerticalAlignment="Center" Margin="0,0,20,0"/>
<Rectangle Fill="Black" Height="8" Width="30" HorizontalAlignment="Left" Margin="-30,0,0,0"/>
<Path Fill="Black" Margin="-50,0,0,0" VerticalAlignment="Center" Width="30" Height="17" HorizontalAlignment="Left"
Data="M0,0 L20,0 L30,8 L20,17 L0,17 L10,8 L0,0 z"/>
<Ellipse StrokeThickness="0" Fill="Red" HorizontalAlignment="Left" Margin="-10,0,0,0" Width="20" VerticalAlignment="Center" Height="20"/>
</Grid>
</ControlTemplate>
</dxga:CustomArcScaleNeedlePresentation.NeedleTemplate>
</dxga:CustomArcScaleNeedlePresentation>
</dxga:ArcScaleNeedle.Presentation>
</dxga:ArcScaleNeedle>
</dxga:ArcScale.Needles>
</dxga:ArcScale>
</dxga:CircularGaugeControl.Scales>
</dxga:CircularGaugeControl>
</Grid>
</Window>
The image below illustrates the result.
Inheritance
See Also