Finding the cell a mouse entered in a polargrid?

[pappa]

Is there an event that will give me the specific cell (i.e. sector and track) that a mouse has entered or exited in a PolarGrid? If so, what is it and what are some examples of it's use? Thanks in advance for your help!

[Narcís]

Hi pappa,

Yes, you can use OnMouseMove event and series' Clicked method as shown here:

Code: Select all

procedure TForm1.Chart1MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
var index: Integer;
begin
  index:=Series1.Clicked(X,Y);

  if index<>-1 then
  begin
    Chart1.Title.Text.Clear;
    Chart1.Title.Text.Add(IntToStr(index));
    Chart1.Title.Text.Add('Track: ' + IntToStr(index mod Series1.NumTracks));
    Chart1.Title.Text.Add('Sector: ' + IntToStr(index div Series1.NumSectors));
  end;
end;