$NetBSD: patch-ab,v 1.3 2008/07/10 13:20:46 joerg Exp $

--- hewx.h.orig	2008-07-10 13:15:49.000000000 +0000
+++ hewx.h
@@ -216,7 +216,7 @@ extern SInt32 system_version;
 
 // from hewx.cpp
 
-extern wxColour *current_text_color, *current_back_color;
+extern "C" wxColour *current_text_color, *current_back_color;
 
 extern "C"
 {