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Bug 1506

Summary: Some LegendEvery values in a ColorGrid give AV depending on the height of the chart
Product: VCL TeeChart Reporter: yeray alonso <yeray>
Component: SeriesAssignee: Steema Issue Manager <issuemanager>
Status: CONFIRMED ---    
Severity: enhancement    
Priority: ---    
Version: unspecified   
Target Milestone: ---   
Hardware: PC   
OS: Windows   
URL: http://www.teechart.net/support/viewtopic.php?f=3&t=16044
Chart Series: ColorGrid Delphi / C++ Builder RAD IDE Version:
Attachments: test project

Description yeray alonso 2016-04-13 04:58:43 EDT 
Created attachment 588 [details]
test project

Having a TColorGridSeries, changing the LegendEvery property ends giving Access Violations and the application ends being unusable.

The exact you have to set on the LegendEvery property depends on the chart height.
Using the default chart height (250) it crashes when you set LegendEvery to 4.

  Chart1.View3D:=false;
  with Chart1.AddSeries(TColorGridSeries) as TColorGridSeries do
  begin
    FillSampleValues;
    UsePalette:=true;
    UseColorRange:=false;
    LegendEvery:=4; //Crashes for the default chart Height 250
  end;

See the project attached.