OK, thanks for the replies.
It definitely looks like a bug in wx and I've found several work-arounds.
They are attached. I can't justify the changes. It certainly looks like
some black magic happens when the size change is propagated
from the inner window to the sizer, rather than from the outer, and
the proportion flags look like have a reverse meaning in that case.
And why the wxST_NO_AUTORESIZE doesn't work I don't know too,
yet now the aMule seem allright.
If someone knowledgeable to wx can comment on that changes
of mine, that would be excellent, but in all my life I got used to the
fact that wx is somewhat very buggy (but now maybe it is just wxGTK).
