It does indeed seem like the theme, and I can't see a way to change it and I haven't been able to find one online either.
Adding spaces and whitespace (and indeed anything) doesn't work. Its not centred as such it starts in the centre so
"The Quick Brown Fox jumps over the lazy dog", displays "The Qu......g" with the T starting position in the centre of the form.
Having looked at other programs they almost all seem to have a minimum size, so for instance calculator and file manager will not shrink small enough to make the center'ing of the text an issue. Terminal window which will shrink acts like my program.
I was hoping for some sort of escape sequence or something but it looks like I might be out of luck. I will post a question on the Raspberry Pi boards just in case anyone there knows a solution.
I thought about a top aligned TLabel, but I am trying to keep the program as small as possible. I guess I could remove the window bar altogether and add a right click menu to exit etc, I did use that once before in a delphi program now I think about it.
Its a bit of a pain, but for now, thanks for your comments and if I find anything out I will post it back here in case anyone else asks about it in the future. For not I have abbreviated the text and its sort of ok (ish).
Barry