;; License along with this library; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-;; $Id: gtkobject.lisp,v 1.4 2000-08-16 22:16:23 espen Exp $
+;; $Id: gtkobject.lisp,v 1.5 2000-08-23 21:41:10 espen Exp $
(in-package "GTK")
value)
-;;;; Callback and user data mechanism
-
-(declaim (fixnum *user-data-count*))
-
-(defvar *user-data* (make-hash-table))
-(defvar *user-data-count* 0)
-
-(defun register-user-data (object &optional destroy-function)
- (check-type destroy-function (or null symbol function))
-; (incf *user-data-count*)
- (setq *user-data-count* (the fixnum (1+ *user-data-count*)))
- (setf
- (gethash *user-data-count* *user-data*)
- (cons object destroy-function))
- *user-data-count*)
-
-
-(defun find-user-data (id)
- (check-type id fixnum)
- (multiple-value-bind (user-data p) (gethash id *user-data*)
- (values (car user-data) p)))
-
+;;;; Callback mechanism
(defun register-callback-function (function)
(check-type function (or null symbol function))
; We treat callbacks just as ordinary user data
(register-user-data function))
-
(defun callback-trampoline (callback-id nargs arg-array)
(declare (fixnum callback-id nargs))
(let* ((return-arg (unless (null-pointer-p arg-array)
(invoke-callback)))))
(invoke-callback))))
-
-(defun destroy-user-data (id)
- (check-type id fixnum)
- (let ((user-data (gethash id *user-data*)))
- (when (cdr user-data)
- (funcall (cdr user-data) (car user-data))))
- (remhash id *user-data*))
-
-
(defvar *callback-marshal* (system:foreign-symbol-address "callback_marshal"))
-(defvar *destroy-marshal* (system:foreign-symbol-address "destroy_marshal"))
+(setq *destroy-marshal* (system:foreign-symbol-address "destroy_marshal"))
(defun after-gc-hook ()
(setf