How to reliably add custom components?

[Gareth Murfin]

Ive made a pie chart that draws on canvas, when I add this it doesnt appear, I have only managed to find one way to get it working in a test form but as soon as I add other things to the form it seems to stop displaying. Is there anything special I need to do to get my custom component actually appearing correctly?

[Gareth Murfin]

Seems to work if I do something along the lines of

  @Override

    public Dimension calcPreferredSize()

    {

        return new Dimension(StateMachine.w,StateMachine.h/2);

    }

cheers.