R6.6 is the Xorg base-line

hw/xnest/XNGC.h

@@ -0,0 +1,43 @@
+/* $Xorg: XNGC.h,v 1.3 2000/08/17 19:53:28 cpqbld Exp $ */
+/*
+
+Copyright 1993 by Davor Matic
+
+Permission to use, copy, modify, distribute, and sell this software
+and its documentation for any purpose is hereby granted without fee,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation.  Davor Matic makes no representations about
+the suitability of this software for any purpose.  It is provided "as
+is" without express or implied warranty.
+
+*/
+
+#ifndef XNESTGC_H
+#define XNESTGC_H
+
+/* This file uses the GC definition form Xlib.h as XlibGC. */
+
+typedef struct {
+  XlibGC gc;
+  int nClipRects;
+} xnestPrivGC;
+
+extern int xnestGCPrivateIndex;
+
+#define xnestGCPriv(pGC) \
+  ((xnestPrivGC *)((pGC)->devPrivates[xnestGCPrivateIndex].ptr))
+
+#define xnestGC(pGC) (xnestGCPriv(pGC)->gc)
+
+Bool xnestCreateGC();
+void xnestValidateGC();
+void xnestChangeGC();
+void xnestCopyGC();
+void xnestDestroyGC();
+void xnestChangeClip();
+void xnestDestroyClip();
+void xnestDestroyClipHelper();
+void xnestCopyClip();
+
+#endif /* XNESTGC_H */