--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/X11/extensions/Xdbe.h	Tue Mar 18 17:55:14 2025 -0400
@@ -0,0 +1,138 @@
+/******************************************************************************
+ *
+ * Copyright (c) 1994, 1995  Hewlett-Packard Company
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL HEWLETT-PACKARD COMPANY BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the Hewlett-Packard
+ * Company shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the Hewlett-Packard Company.
+ *
+ *     Header file for Xlib-related DBE
+ *
+ *****************************************************************************/
+
+#ifndef XDBE_H
+#define XDBE_H
+
+#include <X11/Xfuncproto.h>
+#include <X11/extensions/dbe.h>
+
+typedef struct
+{
+    VisualID    visual;    /* one visual ID that supports double-buffering */
+    int         depth;     /* depth of visual in bits                      */
+    int         perflevel; /* performance level of visual                  */
+}
+XdbeVisualInfo;
+
+typedef struct
+{
+    int                 count;          /* number of items in visual_depth   */
+    XdbeVisualInfo      *visinfo;       /* list of visuals & depths for scrn */
+}
+XdbeScreenVisualInfo;
+
+
+typedef Drawable XdbeBackBuffer;
+
+typedef unsigned char XdbeSwapAction;
+
+typedef struct
+{
+    Window		swap_window;    /* window for which to swap buffers   */
+    XdbeSwapAction	swap_action;    /* swap action to use for swap_window */
+}
+XdbeSwapInfo;
+
+typedef struct
+{
+    Window	window;			/* window that buffer belongs to */
+}
+XdbeBackBufferAttributes;
+
+typedef struct
+{
+    int			type;
+    Display		*display;	/* display the event was read from */
+    XdbeBackBuffer	buffer;		/* resource id                     */
+    unsigned long	serial;		/* serial number of failed request */
+    unsigned char	error_code;	/* error base + XdbeBadBuffer      */
+    unsigned char	request_code;	/* major opcode of failed request  */
+    unsigned char	minor_code;	/* minor opcode of failed request  */
+}
+XdbeBufferError;
+
+/* _XFUNCPROTOBEGIN and _XFUNCPROTOEND are defined as noops
+ * (for non-C++ builds) in X11/Xfuncproto.h.
+ */
+_XFUNCPROTOBEGIN
+
+extern Status XdbeQueryExtension(
+    Display*		/* dpy                  */,
+    int*		/* major_version_return */,
+    int*		/* minor_version_return */
+);
+
+extern XdbeBackBuffer XdbeAllocateBackBufferName(
+    Display*		/* dpy         */,
+    Window		/* window      */,
+    XdbeSwapAction	/* swap_action */
+);
+
+extern Status XdbeDeallocateBackBufferName(
+    Display*		/* dpy    */,
+    XdbeBackBuffer	/* buffer */
+);
+
+extern Status XdbeSwapBuffers(
+    Display*		/* dpy         */,
+    XdbeSwapInfo*	/* swap_info   */,
+    int			/* num_windows */
+);
+
+extern Status XdbeBeginIdiom(
+    Display*		/* dpy */
+);
+
+extern Status XdbeEndIdiom(
+    Display*		/* dpy */
+);
+
+extern XdbeScreenVisualInfo *XdbeGetVisualInfo(
+    Display*		/* dpy               */,
+    Drawable*		/* screen_specifiers */,
+    int*		/* num_screens       */
+);
+
+extern void XdbeFreeVisualInfo(
+    XdbeScreenVisualInfo*	/* visual_info */
+);
+
+extern XdbeBackBufferAttributes *XdbeGetBackBufferAttributes(
+    Display*		/* dpy    */,
+    XdbeBackBuffer	/* buffer */
+);
+
+_XFUNCPROTOEND
+
+#endif /* XDBE_H */
+