Hides then reshows the window in its original position and with its
original size. This method is not normally used in every day code. It
will ignore any changes that the user has made to the window and return
the window to its original settings. If you want to prevent the window
from being moved, pass Gtk::WIN_POS_CENTER_ALWAYS to
set_position() . If you want to
prevent the user from resizing the window, pass false
to set_resizable() .