anchor.diff:    (detail quark)
     (closure (or null pointer))
     (func (or null pointer))
  -  (data unsigned-long))
  +  (data pointer-data))
   
   (defbinding signal-handler-disconnect () nil
     (instance ginstance)
  
positive.code:     (closure-set-meta-marshal gclosure callback-id callback)
      gclosure))
  
  (defun make-callback-closure (function marshaller)
    (let ((callback-id (register-callback-function function)))
      (values
       (callback-closure-new callback-id marshaller user-data-destroy-callback)
  
negative.code: ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  ;; $Id: gcallback.lisp,v 1.42 2007-05-10 20:25:09 espen Exp $
  
  (in-package "GLIB")
  
  