GtkFixed is a container widget that retains the
original sizes and positions of its children regardless of any top-level
resizing.
Note that there is no padding or spacing implicit in this method of
container packing. The arrangement of the children is based purely on
the co-ordinate values given in the
put() and
move() method parameters. For
this reason it is inadvisable to use
add() when utilising
GtkFixed, as widgets that have been added in
this way can and will be overwritten by any fixed-position widgets.
