--- ray/src/px/x11raster.h	1990/03/02 12:22:44	1.3
+++ ray/src/px/x11raster.h	2003/07/14 22:24:00	2.3
@@ -1,13 +1,17 @@
-/* Copyright 1990 Regents of the University of California */
-
-/* SCCSid "$SunId$ LBL" */
-
+/* RCSid: $Id: x11raster.h,v 2.3 2003/07/14 22:24:00 schorsch Exp $ */
 /*
  * x11raster.h - header file for X routines using images.
  *
  *	3/1/90
  */
+#ifndef _RAD_X11RASTER_H_
+#define _RAD_X11RASTER_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
 typedef struct {
 	Display	*disp;				/* the display */
 	int	screen;				/* the screen */
@@ -32,3 +36,9 @@ extern XRASTER	*make_raster();
 
 #define put_raster(d,xdst,ydst,xr) patch_raster(d,0,0,xdst,ydst, \
 				(xr)->image->width,(xr)->image->height,xr)
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _RAD_X11RASTER_H_ */
+