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authormarha <marha@users.sourceforge.net>2009-11-05 19:07:52 +0000
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+.\" $Xorg: XdbeSwap.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/XdbeSwap.man,v 3.5 2001/02/07 22:35:22 tsi Exp $
+.\"
+.TH XdbeSwapBuffers __libmansuffix__ __xorgversion__ "X FUNCTIONS"
+.SH NAME
+XdbeSwapBuffers - swaps front and back DBE buffers.
+.SH SYNOPSIS
+\&#include <X11/extensions/Xdbe.h>
+
+Status XdbeSwapBuffers(
+ Display *dpy,
+ XdbeSwapInfo *swap_info,
+ int num_windows)
+.SH DESCRIPTION
+This function swaps the front and back buffers for a list of windows. The
+argument
+.I num_windows
+specifies how many windows are to have their buffers
+swapped; it is the number of elements in the
+.I swap_info
+array. The argument
+.I swap_info
+specifies the information needed per window to do the swap.
+
+The
+.I XdbeSwapInfo
+structure has the following fields:
+
+ Window swap_window
+ XdbeSwapAction swap_action
+
+.I swap_window
+specifies the window for which to swap buffers.
+.I swap_action
+specifies the swap action to use for this
+.I swap_window.
+
+.I swap_action
+determines what will happen to the new back buffer of the
+.I swap_window
+it is paired with in the list in addition to making the old back buffer
+become visible. The defined actions are as follows:
+
+.IP XdbeUndefined
+The contents of the new back buffer become undefined. This may be the most
+efficient action since it allows the implementation to discard the contents of
+the buffer if it needs to.
+.IP XdbeBackground
+The unobscured region of the new back buffer will be tiled with the
+window background. The background action allows devices to use a fast clear
+capability during a swap.
+.IP XdbeUntouched
+The unobscured region of the new back buffer will be unmodified by the swap.
+.IP XdbeCopied
+The unobscured region of the new back buffer will be the contents of the old
+back buffer
+.SH ERRORS
+.IP BadMatch
+A non-double-buffered window was specified or a window was specified twice.
+.IP BadWindow
+An invalid window was specified.
+.IP BadValue
+An invalid swap action was specified.
+.SH SEE ALSO
+DBE,
+.I XdbeAllocateBackBufferName(),
+.I XdbeBeginIdiom(),
+.I XdbeDeallocateBackBufferName(),
+.I XdbeEndIdiom(),
+.I XdbeFreeVisualInfo(),
+.I XdbeGetBackBufferAttributes(),
+.I XdbeGetVisualInfo(),
+.I XdbeQueryExtension().
+