[Gtk2] autosize question

[Henry Vermaak]

Hi gtk2 list

I realised today that the lcl doesn't react very well if you change
the size of the system font.  Autosized controls should react by
invalidating and re-computing their size.  I thought the best place to
do this is GTKStyleChanged (using the style-set signal).  It should be
really simple, like calling InvalidatePreferredSize or something, but
I can't get it to work (except if I call
gtk_widget_set_size_request(widget, -1, -1), but I doubt if that's the
best thing to do).  Can someone give me any hints, please?

Henry