69 lines
2.6 KiB
Groff
69 lines
2.6 KiB
Groff
.\" $XFree86$
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.\"
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.\" Copyright 2004 Red Hat Inc., Durham, North Carolina.
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.\" All Rights Reserved.
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining
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.\" a copy of this software and associated documentation files (the
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.\" "Software"), to deal in the Software without restriction, including
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.\" without limitation on the rights to use, copy, modify, merge,
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.\" publish, distribute, sublicense, and/or sell copies of the Software,
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.\" and to permit persons to whom the Software is furnished to do so,
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.\" subject to the following conditions:
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.\"
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.\" he above copyright notice and this permission notice (including the
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.\" next paragraph) shall be included in all copies or substantial
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.\" portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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.\" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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.\" NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
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.\" BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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.\" ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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.\" CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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.\" SOFTWARE.
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.TH DMXGetScreenCount 3X __vendorversion__
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.SH NAME
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DMXGetScreenCount \- determine number of back-end screens
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.SH SYNOPSIS
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.B #include <X11/extensions/dmxext.h>
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.sp
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.nf
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.BI "Bool DMXGetScreenCount(Display " *dpy ,
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.BI " int " *screen_count );
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.fi
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.SH DESCRIPTION
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.B DMXGetScreenCount()
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returns the number of back-end screens that a
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.BR Xdmx (1)
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server controls. Since a DMX screen usually fills all of the available
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area on a back-end server, there is usually a one-to-one correspondence
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between DMX screens and backend servers. However, it is also possible
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for a DMX screen to cover only part of the available area on a back-end
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server, and for more than one DMX screens to occupy different parts of
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the visible area on the same back-end server.
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.PP
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A DMX screen may be managed as a regular X screen in the
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.BR Xdmx (1)
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server or may be joined with other DMX screens using Xinerama.
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.SH "RETURN VALUE"
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.B DMXGetScreenCount()
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sets
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.I screen_count
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and returns
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.B True
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unless there is a protocol error.
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.SH NOTES
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If Xinerama is active, only one logical screen will be available to
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clients of the
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.BR Xdmx (1)
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server. However, this call will accurately reflect the number of
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composite back-end screens that the
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.BR Xdmx (1)
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server is using.
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.SH "SEE ALSO"
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.BR DMXGetScreenAttribtues "(3X), "
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.BR DMXChangeScreenAttributes "(3X), "
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.BR DMX "(3X), " Xdmx (1)
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