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Bug 1738

Summary:	The Chart Draw method causes an EInvalidOperation Excetpion.
Product:	VCL TeeChart	Reporter:	sandra pazos <sandra>
Component:	Canvas	Assignee:	Steema Issue Manager <issuemanager>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	david
Priority:	Normal
Version:	20.170306
Target Milestone:	---
Hardware:	PC
OS:	Windows
Chart Series:	---	Delphi / C++ Builder RAD IDE Version:

Description sandra pazos 2017-01-02 10:31:18 EST

The Chart Draw method causes an EInvalidOperation Excetpion. The problem doesn't occur using Steema TeeChart Pro VCL/FMX 2016.18 when the chart is drawn in GDI. In latest Teechart release the problem is produced always. 

The code below shows the problem:

uses Series, TeEngine, TeCanvas, Chart;
var Chart1:TChart;
procedure TForm1.Button1Click(Sender: TObject);
begin
  Chart1 := TChart.Create(nil);
  Chart1.Color := clWhite;
  Chart1.Canvas := TTeeCanvas3D.Create;
  Chart1.Draw;
end;