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Bug 2621

Summary: Add an event to modify properties when saving the chart to Stream/File
Product: VCL TeeChart Reporter: yeray alonso <yeray>
Component: ExportAssignee: Steema Issue Manager <issuemanager>
Status: RESOLVED WONTFIX    
Severity: enhancement CC: yeray
Priority: ---    
Version: unspecified   
Target Milestone: ---   
Hardware: PC   
OS: Windows   
URL: https://www.steema.com/support/viewtopic.php?f=3&t=17976
Chart Series: --- Delphi / C++ Builder RAD IDE Version:
Attachments: test example

Description yeray alonso 2023-07-13 12:12:18 EDT 
Created attachment 1050 [details]
test example

It could be sometimes useful to allow modifying the properties that are being saved to a Stream, as the customer in the forums suggests.

I've added the customers test project with the event - under development - commented out.
Comment 1 yeray alonso 2023-07-14 02:44:52 EDT 
The latest version (v2023.38) adds SaveChartToString/LoadChartFromString which could do the job without having to add a new event into the Chart. Here the example:

procedure TForm1.BSaveClick(Sender: TObject);
var lStringList:TStringList;

  procedure DeleteIfExists(prop: string);
  var idx: Integer;
  begin
    idx:=lStringList.IndexOf(prop);
    if idx>=0 then
       lStringList.Delete(idx);
  end;

begin
  lStringList:=TStringList.Create;
  lStringList.Text:=SaveChartToString(Chart1);

  DeleteIfExists('Marks.OnTop');

  MemoXML.Lines:=lStringList;
end;

procedure TForm1.BLoadClick(Sender: TObject);
begin
  LoadChartFromString(Chart1, MemoXML.Lines.Text);
end;