gdk:screen-window-stack (screen)

screen -- a gdk:screen object

The list of gdk:window objects for the current window stack, or nil.

Returns a list of windows 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 nil.

On other platforms, this function may return nil, depending on whether it is implementable on that platform.