Returns a list of
DrawWindows representing the current window
stack.
On X11, this is done by inspecting the _NET_CLIENT_LIST_STACKING
property on the root window, as described in the Extended Window
Manager Hints. If the window manager does not support the
_NET_CLIENT_LIST_STACKING hint, this function returns
Nothing.
On other platforms, this function may return
Nothing,
depending on whether it is implementable on that platform.
- Available since Gdk version 2.10