$OpenBSD: patch-Fl_NSlider_cc,v 1.1 2002/08/10 20:10:24 wilfried Exp $
--- Fl_NSlider.cc.orig	Wed Apr 11 21:12:20 2001
+++ Fl_NSlider.cc	Fri Aug  9 16:17:48 2002
@@ -8,6 +8,7 @@
  * made about the suitability of this software for any purpose.  It is
  * provided "as is" without express or implied warranty.
  */
+#include <FL/Fl_Group.H>
 #include <FL/Fl_NSlider.H>
 
 static uchar isHoz = 0;	        //for image draw setup
