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.\" Copyright (c) 1995 Hewlett-Packard Company
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining a
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.\" copy of this software and associated documentation files (the "Software"),
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.\" to deal in the Software without restriction, including without limitation
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.\" the rights to use, copy, modify, merge, publish, distribute, sublicense,
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.\" and/or sell copies of the Software, and to permit persons to whom the
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.\" Software furnished to do so, subject to the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be included in
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.\" all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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.\" HEWLETT-PACKARD COMPANY BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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.\" WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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.\" OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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.\" SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the Hewlett-Packard Company shall not
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.\" be used in advertising or otherwise to promote the sale, use or other
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.\" dealing in this Software without prior written authorization from the
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.\" Hewlett-Packard Company.
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.\"
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.TH XdbeQueryExtension __libmansuffix__ __xorgversion__ "X FUNCTIONS"
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.SH NAME
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XdbeQueryExtension - returns the version of DBE supported by the server.
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.SH SYNOPSIS
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\&#include <X11/extensions/Xdbe.h>
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Status XdbeQueryExtension(
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Display *dpy,
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int *major_version_return,
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int *minor_version_return)
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.SH DESCRIPTION
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Sets
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.I major_version_return
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and
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.I minor_version_return
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to the major and minor
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DBE protocol version supported by the server. If the DBE library is
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compatible with the version returned by the server, this function returns
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non-zero. If
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.I dpy
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does not support the DBE extension, or if there was an error
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during communication with the server, or if the server and library protocol
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versions are incompatible, this function returns zero. No other Xdbe functions
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may be called before this function. If a client violates this rule, the
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effects of all subsequent Xdbe calls that it makes are undefined.
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.SH SEE ALSO
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DBE,
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.I XdbeAllocateBackBufferName(),
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.I XdbeBeginIdiom(),
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.I XdbeDeallocateBackBufferName(),
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.I XdbeEndIdiom(),
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.I XdbeFreeVisualInfo(),
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.I XdbeGetBackBufferAttributes(),
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.I XdbeGetVisualInfo(),
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.I XdbeSwapBuffers().
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