Hi,

Since we have a flowchart with thousands of nodes and arrows and we have to execute the ArrangeDiagram method of GridLayout, it takes long long time.

We need to have a "progress indicator" of executing method (as I told you in Discussion forum), because the application becomes "freezed", better if this indicator shows the progress via Windows Messages.

Since we bought pro version with source code, there is a way to implement this ourselves?

Thank you

surely we'll wait... meanwhile we'll implement other features needed in our software

thank you very much!

next week perhaps 8)

We've added a LayoutProgress(current, total) event, raised by all layout classes. You can find the updated version on the PM page.

Unfortunately, I wasn't able to make it work.

I call the Arrangediagram method in this way:

var
    gl:GridLayout;
begin

     gl := CoGridLayout.Create();
     gl.GridSize := 120;
     gl.ArrowAnchoring := ancReassign;
     gl.NumIterations := 50;
     gl.routearrows := false;

     flowChartMain.FitDocToObjects(10);
     flowChartMain.ArrangeDiagram(gl);
end;
 

and this is the procedure LayoutProgress:

procedure TForm_Main.flowChartMainLayoutProgress(ASender: TObject; current,
  total: Integer);
begin
  showmessage(inttostr(current) + ' / ' + inttostr(total));
  Application.ProcessMessages;  //I don't know if this can be useful...
end;
 

I inserted a breakpoint on the first line of flowChartMainLayoutProgress but it was never hit.

Some suggestions? Thank you in advance.

I was testing a chart with 30 boxes that were connected randomly by 300 arrows.

Since computation was a little "heavy", the event was not raised but with a chart with a larger ratio nodes/arrows it worked.

I'll keep testing if this behaviour is correct.

thank you

hi there,

I was wondering if is it possible to break the re-arrangement during the onLayoutProgress event.

This could be useful because a user could break the "ArrangeDiagram" method pressing a button while progressbar is advancing slowly...

any suggestions?

thanks