--- gtk+-2.6.4/gtk/gtktoolbutton.h	2004-11-23 22:02:15.000000000 +0200
+++ gtk+-2.6.4/gtk/gtktoolbutton.h	2005-04-06 16:19:38.168735832 +0300
@@ -54,6 +54,7 @@
 
   /* signal */
   void       (* clicked)             (GtkToolButton    *tool_item);
+  void       (* insensitive_press)             (GtkToolButton    *tool_item);
 
   /* Padding for future expansion */
   void (* _gtk_reserved1) (void);