+/*! Compare the desktop for two windows to see if they are considered on the
+ same desktop.
+ Windows that are on "all desktops" are treated like they are only on the
+ current desktop, so they are only in one place at a time.
+ @return TRUE if they are on the same desktop, FALSE otherwise.
+*/
+gboolean screen_compare_desktops(guint a, guint b);
+