Initial checkin

diff --git a/gtk/gtkutils.lisp b/gtk/gtkutils.lisp
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+;; Common Lisp bindings for GTK+ v2.0
+;; Copyright (C) 1999-2000 Espen S. Johnsen <espejohn@online.no>
+;;
+;; This library is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU Lesser General Public
+;; License as published by the Free Software Foundation; either
+;; version 2 of the License, or (at your option) any later version.
+;;
+;; This library is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; Lesser General Public License for more details.
+;;
+;; You should have received a copy of the GNU Lesser General Public
+;; 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: gtkutils.lisp,v 1.1 2000-10-05 17:21:46 espen Exp $
+
+
+(in-package "GTK")
+
+(defun create-button (specs &optional callback &rest args)
+  (destructuring-bind (label &rest initargs) (mklist specs)
+    (let ((button
+          (apply #'make-instance 'button :label label :visible t initargs)))
+      (if callback
+         (signal-connect
+          button 'clicked
+          #'(lambda ()
+              (apply (funcallable callback) args)))
+       (setf (widget-sensitive-p button) nil))
+      button)))
+
+(defun %create-toggleable-button (class label callback state args)
+  (let ((button (make-instance class :label label :active state :visible t)))
+    (signal-connect
+     button 'toggled
+     #'(lambda ()
+        (apply (funcallable callback) (toggle-button-active-p button) args)))
+    (apply (funcallable callback) state args)
+    button))
+
+(defun create-toggle-button (label callback &optional state &rest args)
+  (%create-toggleable-button 'toggle-button label callback state args))
+
+(defun create-check-button (label callback &optional state &rest args)
+  (%create-toggleable-button 'check-button label callback state args))
+
+(defun create-radio-button-group (specs active &optional callback &rest args)
+  (let ((group nil)
+       (i 0))
+    (mapcar
+     #'(lambda (spec)
+        (destructuring-bind
+            (label &optional object &rest initargs) (mklist spec)
+          (let ((button
+                 (apply
+                  #'make-instance 'radio-button
+                  :label label :visible t initargs)))
+            (when group (%radio-button-set-group button group))
+            (setq group (%radio-button-get-group button))
+            (cond
+             (callback
+              (signal-connect
+               button 'toggled
+               #'(lambda ()
+                   (when (toggle-button-active-p button)
+                     (apply (funcallable callback) object args)))))
+             (object
+              (signal-connect
+               button 'toggled
+               #'(lambda ()
+                   (apply
+                    (funcallable object)
+                    (toggle-button-active-p button) args)))))
+            (when (= i active)
+              (setf (toggle-button-active-p button) t))
+            (incf i)
+            button)))
+     specs)))
+
+(defun create-option-menu (specs active &optional callback &rest args)
+  (let ((menu (make-instance 'menu))
+       (group nil)
+       (i 0))
+    (dolist (spec specs)
+      (destructuring-bind (label &optional object &rest initargs) (mklist spec)
+       (let ((menu-item
+              (apply
+               #'make-instance 'radio-menu-item
+               :label label :active (= i active) initargs)))
+         (when group (%radio-menu-item-set-group menu-item group))
+         (setq group (%radio-menu-item-get-group menu-item))
+         (cond
+          (callback
+           (signal-connect
+            menu-item 'activated
+            #'(lambda ()
+                (apply (funcallable callback) object args))))
+          (object
+           (signal-connect
+            menu-item 'toggled
+            #'(lambda ()
+                (apply
+                 (funcallable object)
+                 (check-menu-item-active-p menu-item) args)))))
+         (incf i)
+         (menu-shell-append menu menu-item))))
+    
+    (make-instance 'option-menu :history active :menu menu)))
+