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 |
---|---|
Tdx |
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: Customize Individual Series Points
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;