TdxChartLineSeriesPointDrawParameters.MarkerAppearance Property
Provides access to the appearance settings of the currently processed series point’s marker.
Declaration
property MarkerAppearance: TdxChartXYSeriesLineMarkerAppearance read;
Property Value
Type | Description |
---|---|
TdxChartXYSeriesLineMarkerAppearance | Stores series point marker appearance settings for Line and Area series Views. |
Remarks
Use MarkerAppearance
and Appearance properties to customize the appearance of the point marker and line segment associated with the currently processed series point.
Code Example
The following code example demonstrates a diagram’s OnGetSeriesPointDrawParameters event handler that changes the appearance settings of points with peak values in a Simple Line series.
procedure TMyForm.cdLineGetSeriesPointDrawParameters(Sender: TdxChartCustomDiagram;
AArgs: TdxChartGetSeriesPointDrawParametersEventArgs);
var
ALineDrawParameters: TdxChartLineSeriesPointDrawParameters;
ASeries: TdxChartCustomSeries;
AIndex: Integer;
begin
if AArgs.SeriesPoint.Series.Caption = 'Europe' then
begin
if AArgs.DrawParameters.ClassType <> TdxChartLineSeriesPointDrawParameters then Exit;
ALineDrawParameters := AArgs.DrawParameters as TdxChartLineSeriesPointDrawParameters;
AIndex := AArgs.SeriesPoint.Index;
ASeries := AArgs.SeriesPoint.Series;
if ((AIndex = 0) and (ASeries.Points.Values[AIndex] > ASeries.Points.Values[AIndex + 1])) or
((AIndex > 0) and (AIndex < ASeries.Points.Count - 1) and
(ASeries.Points.Values[AIndex] > ASeries.Points.Values[AIndex + 1]) and
(ASeries.Points.Values[AIndex] > ASeries.Points.Values[AIndex - 1])) then
begin
ALineDrawParameters.MarkerAppearance.FillOptions.Color := TdxAlphaColors.Red;
ALineDrawParameters.Appearance.BeginUpdate;
ALineDrawParameters.Appearance.StrokeOptions.Color := TdxAlphaColors.Red;
ALineDrawParameters.Appearance.StrokeOptions.Style := TdxStrokeStyle.Solid;
ALineDrawParameters.Appearance.EndUpdate;
end;
end;
end;
See Also