Returns the current workspace for this
when running under a window manager that supports multiple workspaces, as described in the
Extended Window Manager Hints specification.
Returns the number of workspaces for this
when running under a window manager that supports multiple workspaces, as described in the
Extended Window Manager Hints specification.
This function is specific to the X11 backend of GDK, and indicates
whether the window manager supports a certain hint from the
Extended Window Manager Hints specification.