diff --git a/vncviewer/cocoa.h b/vncviewer/cocoa.h
new file mode 100644
index 0000000..3bbe6fa
--- /dev/null
+++ b/vncviewer/cocoa.h
@@ -0,0 +1,25 @@
+/* Copyright 2011 Pierre Ossman <ossman@cendio.se> for Cendio AB
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+#ifndef __VNCVIEWER_COCOA_H__
+#define __VNCVIEWER_COCOA_H__
+
+int cocoa_capture_display(Fl_Window *win);
+void cocoa_release_display(Fl_Window *win);
+
+#endif