Undo Redo

[Nicho]

There were the questions about Undo \ Redo inbuilt functionality for TChart in 2007, are you planning to implement it soon?
I am using TDragPoint and other inbuilt functions, in this case SaveChartToStream and LoadChartFromStream not returning the correct TChart.
Also very often if multi Series are in Chart, it changes the Series number (Series3 could be swapped with Series1 ).

Can you suggest a work around? Please give me the approximate date of implementation inbuilt UndoRedo.

Thank you

[Yeray]

Hi Nicho,

I guess you refer to this issue: TF02012223
I've added the same to the VCL wish list to be implemented in future releases (TV52015229).

I've incremented the issue priority. However I'm afraid I can't tell you when this will be implemented.

I am using TDragPoint and other inbuilt functions, in this case SaveChartToStream and LoadChartFromStream not returning the correct TChart.

I've tried to reproduce it with the following example but everything seems to work as expected. Doesn't it for you?

Code: Select all

uses Series, TeeStore, TeExport, TeeEditPRO, TeeDragPoint;

var tmpStream: TStream;

procedure TForm1.FormCreate(Sender: TObject);
var i: Integer;
begin
  for i:=0 to 1 do with Chart1.AddSeries(TPointSeries) do
  begin
    FillSampleValues(6);
    Color:=RGB(random(255), random(255), random(255));
    with Chart1.Tools.Add(TDragPointTool) as TDragPointTool do Series:=Chart1[i];
  end;

  Chart1[0].Title:='A';
  Chart1[1].Title:='B';
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  Chart1.ExchangeSeries(0,1);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  tmpStream:=TMemoryStream.Create;

  SaveChartToStream(Chart1, tmpStream, true, true);

  tmpStream.Position:=0;
  LoadChartFromStream(TCustomChart(Chart2), tmpStream);

  tmpStream.Free;
end;

Also very often if multi Series are in Chart, it changes the Series number (Series3 could be swapped with Series1 ).

I've seen some strange behaviour with the colors of the series (that I've solved assigning a color to the series as in the example above), but nothing about the series names.

Could you please send us a simple example project we can run as-is to reproduce the problems here?