Object are not visible in XE3

I have Windows 8 + Delphi XE3.


1. Open Delphi XE3
2. Make New VCL App
3. Put atDiagram & DiagramToolBar then link the Diagram
4. Run

Then when I put object into the diagram, the object is created, I can select and move it but the object color is transparent.

This case doesn't exists in Delphi 7.

Anyone know why?

Can you check if using GDI Plus would work? Try this:


atDiagram1.GraphicLib := dglGdiPlus;

it says:


[dcc32 Error] Unit1.pas(29): E2003 Undeclared identifier: 'dglGdiPlus'

what uses?

got it, 


Uses DgrClasses.

it works, thank you so much :D