gtk:window-window-position (object)

object -- a gtk:window widget
position -- a value of the gtk:window-position enumeration

Accessor of the window-position slot of the gtk:window class. The (setf gtk:window-window-position) function sets a position contraint for this window. If the old or new constraint is the :center-always value, this will also cause the window to be repositioned to satisfy the new constraint.