Window.restack

Changes the position of window in the Z-order (stacking order), so that it is above sibling (if above is true) or below sibling (if above is false).

If sibling is null, then this either raises (if above is true) or lowers the window.

If window is a toplevel, the window manager may choose to deny the request to move the window in the Z-order, [gdk.window.Window.restack] only requests the restack, does not guarantee it.