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+.\" $Xorg: XdbeQuer.man,v 1.3 2000/08/17 19:41:55 cpqbld Exp $
+.\"
+.\" Copyright (c) 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 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
+.\" dealing in this Software without prior written authorization from the
+.\" Hewlett-Packard Company.
+.\"
+.\" $XFree86: xc/doc/man/Xext/dbe/XdbeQuer.man,v 3.4 2001/01/27 18:20:20 dawes Exp $
+.\"
+.TH XdbeQueryExtension __libmansuffix__ __xorgversion__ "X FUNCTIONS"
+.SH NAME
+XdbeQueryExtension - returns the version of DBE supported by the server.
+.SH SYNOPSIS
+\&#include <X11/extensions/Xdbe.h>
+
+Status XdbeQueryExtension(
+ Display *dpy,
+ int *major_version_return,
+ int *minor_version_return)
+.SH DESCRIPTION
+Sets
+.I major_version_return
+and
+.I minor_version_return
+to the major and minor
+DBE protocol version supported by the server. If the DBE library is
+compatible with the version returned by the server, this function returns
+non-zero. If
+.I dpy
+does not support the DBE extension, or if there was an error
+during communication with the server, or if the server and library protocol
+versions are incompatible, this function returns zero. No other Xdbe functions
+may be called before this function. If a client violates this rule, the
+effects of all subsequent Xdbe calls that it makes are undefined.
+.SH SEE ALSO
+DBE,
+.I XdbeAllocateBackBufferName(),
+.I XdbeBeginIdiom(),
+.I XdbeDeallocateBackBufferName(),
+.I XdbeEndIdiom(),
+.I XdbeFreeVisualInfo(),
+.I XdbeGetBackBufferAttributes(),
+.I XdbeGetVisualInfo(),
+.I XdbeSwapBuffers().
+