ChartControl.CustomPaint Event

Occurs after all the chart’s visual elements have been drawn.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v18.1.UI.dll

Declaration

C#

public event CustomPaintEventHandler CustomPaint

VB.NET

Public Event CustomPaint As CustomPaintEventHandler

Event Data

The CustomPaint event's data class is CustomPaintEventArgs. The following properties provide information specific to this event:

Property	Description
Bounds	Gets the bounds of a custom graphic object.
Graphics	Gets the custom graphic object.

Remarks

Use the CustomPaint event, to draw custom graphics over your chart.

For example, using the XYDiagram2D.DiagramToPoint and RadarDiagram.DiagramToPoint methods in the CustomPaint event handler, allows you to draw custom graphic objects tied to the existing chart elements (series, series points and so on).

The graphics drawn in the CustomPaint event handler will not affect 3D charts.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the CustomPaint event.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

VB.NET

how-to-implement-highlight-the-nearest-point-on-the-swift-plot-diagram-e3600/VB/MainForm.vb#L44

End Sub
Private Sub chartControl1_CustomPaint(ByVal sender As Object, ByVal e As CustomPaintEventArgs) Handles chart.CustomPaint
    Dim coords As DiagramCoordinates = Diagram.PointToDiagram(New Point(x, y))

how-to-implement-range-selection-via-a-separate-chartcontrol-e3113/VB/InteractiveRangeSelect/Form1.vb#L172

Private Sub chartSelectRange_CustomPaint(ByVal sender As Object, ByVal e As CustomPaintEventArgs) Handles chartSelectRange.CustomPaint
    If Diagram Is Nothing Then

how-to-convert-axis-values-of-series-points-into-screen-coordinates-e2480/VB/CustomPaintEvent/Form1.vb#L15

Private Sub chartControl1_CustomPaint(ByVal sender As Object, ByVal e As CustomPaintEventArgs) Handles chartControl1.CustomPaint
    Dim chart As ChartControl = DirectCast(sender, ChartControl)

how-to-implement-custom-zooming-and-scrolling-using-mouse-buttons-t513553/VB/NewProject/ChartZoomScrollHelper.vb#L33

chartControl = chart
AddHandler chartControl.CustomPaint, AddressOf chartControl1_CustomPaint
AddHandler chartControl.MouseDown, AddressOf chartControl1_MouseDown

C#

how-to-implement-custom-zooming-and-scrolling-using-mouse-buttons-t513553/CS/NewProject/ChartZoomScrollHelper.cs#L20

chartControl = chart;
chartControl.CustomPaint += chartControl1_CustomPaint;
chartControl.MouseDown += chartControl1_MouseDown;