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Bug 2112

Summary: Null points sometimes drawn in FastLine with TreatNulls=tnDontPaint
Product: VCL TeeChart Reporter: yeray alonso <yeray>
Component: SeriesAssignee: Steema Issue Manager <issuemanager>
Status: RESOLVED FIXED    
Severity: enhancement    
Priority: ---    
Version: 25.180808   
Target Milestone: ---   
Hardware: PC   
OS: Windows   
URL: https://www.steema.com/support/viewtopic.php?f=3&t=17045
See Also: http://bugs.teechart.net/show_bug.cgi?id=2006
Chart Series: --- Delphi / C++ Builder RAD IDE Version:
Bug Depends on: 2006    
Bug Blocks:    

Description yeray alonso 2018-10-15 04:33:42 EDT 
The fix for #2006 seems to create this issue


uses Series, TeeConst;

procedure TForm1.FormCreate(Sender: TObject);
var i: Integer;
begin
  Caption:=TeeMsg_Version;
  Chart1.Legend.Hide;
  Chart1.View3D:=False;

  with Chart1.AddSeries(TFastLineSeries) as TFastLineSeries do
  begin
    for i:=0 to 19 do
      if i=10 then
        AddNull(5)
      else
        Add(10);

    TreatNulls:=tnDontPaint;
  end;

  Chart1.Axes.Left.SetMinMax(0,15);
end;