Steema Central

Posted: **Wed Sep 20, 2006 10:54 am**

hi,

I got a Chart (alClient) on some MDI form (MDiForm.Left > 0).

I want to maximize the MDI by double clicking on the chart, But it's provoc a zoom.

Any Idea how to avoid it?

thx in advance,

Posted: **Wed Sep 20, 2006 11:06 am**

Hi Mariano,

You can disable zoom and then enable it manually:

Code: Select all

  Chart1.Zoom.Allow:=false;

Or you can try doing something like this:

Code: Select all

procedure TForm1.Chart1DblClick(Sender: TObject);
begin
  if Chart1.Align=alClient then
    Chart1.Zoom.Allow:=true
  else
    Chart1.Align:=alClient;
end;

Posted: **Wed Sep 20, 2006 12:21 pm**

hi,

thanks, I didn't thought about this (simple) way...

Code: Select all

procedure TFrmCompare.ChartDblClick(Sender: TObject);
begin
  fDblClick := true;
  fOldZoomAllow := Chart.Zoom.Allow;
  Chart.Zoom.Allow := false;
 // ...
end;

procedure TFrmCompare.ChartMouseUp(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  if fDblClick then begin
    fDblClick := false;
    Chart.Zoom.Allow := fOldZoomAllow;
  end;
  //...
end;

it's work great.

Steema Central

Zoom vs Double Click = Maximize

Zoom vs Double Click = Maximize