Steema Central

Hi

I have recently upgraded from version 8 to 2014 and I have found that the crossbox that appears in a TTree seems to be blurry. in version 8 the crosboss in the TTree component looked like a sharp +
However now it is hard to even see it is +, is there some new option I can change to get the crossBox to be sharp?

Hello,

This is because the default Canvas changed to GDIPlus.

• To change the Canvas in the current TTree, you have two options:
  • Open the dfm and change this:

    Code: Select all

    DefaultCanvas = 'TGDIPlusCanvas'

    for this:

    Code: Select all

    DefaultCanvas = ''

  • Call this at runtime:

    Code: Select all

    uses TeCanvas;
    
    procedure TForm1.FormCreate(Sender: TObject);
    begin
      Tree1.Canvas:=TTeeCanvas3D.Create;
    end;

• To change the default Canvas to be used in the next Trees and Charts you'll create, you can drop a temporal TChart into a form, follow the instructions here, and then you can remove the TChart.

Thanks for that. I had been looking for that for awhile. I have also found that the cross still doesn't look right so I changed tmpExtra to be 1 in the method TTreeNodeCrossBox.Draw(...) and it all looks like it did before.