gdk-window-move-resize (window x y width height)

window -- a gdk-window object
x -- a :int with the new x position relative to window's parent
y -- a :int with the new y position relative to window's parent
width -- a :int with the new width
height -- a :int with the new height

Equivalent to calling the functions gdk-window-move and gdk-window-resize, except that both operations are performed at once, avoiding strange visual effects. I.e. the user may be able to see the window first move, then resize, if you do not use the function gdk-window-move-resize.