--- old/src/solaris/classes/sun/awt/X11/XToolkit.java	2012-12-10 20:46:45.237047214 +0100
+++ new/src/solaris/classes/sun/awt/X11/XToolkit.java	2012-12-10 20:46:45.024065583 +0100
@@ -1543,6 +1543,10 @@
         }
     }
 
+    static int getNumberOfButtonsForMask() {
+	return Math.min(XConstants.MAX_BUTTON_MASK, ((SunToolkit) (Toolkit.getDefaultToolkit())).getNumberOfButtons());
+    }
+
     private final static String prefix  = "DnD.Cursor.";
     private final static String postfix = ".32x32";
     private static final String dndPrefix  = "DnD.";