2006-11-25 11:01:46 -07:00
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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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.\" 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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.\" 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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2010-04-25 13:59:53 -06:00
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.TH DMXChangeScreensAttributes __libmansuffix__ __vendorversion__
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.SH NAME
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DMXChangeScreensAttributes \- change back-end screen attributes
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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 "int DMXChangeScreensAttributes(Display " *dpy ,
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.BI " int " screen_count ,
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.BI " int " *screens ,
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.BI " int " mask_count ,
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.BI " unsigned int " *masks ,
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.BI " DMXScreenAttributes " *attr ,
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.BI " int *" error_screen );
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.fi
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.SH DESCRIPTION
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.B DMXChangeScreensAttributes()
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changes the geometries and positions of the DMX screen and DMX root
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windows on the back-end X servers.
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.I screen_count
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specifies the number of screens to be changed. For each screen, the
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screen number is placed in
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.IR screens ,
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an attribute mask is placed in
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.IR masks ,
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and a
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.I DMXScreenAttributes
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structure is included in
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.IR attr .
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.PP
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An explanation of the
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.I DMXScreenAttributes
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structure is given in
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2010-04-25 13:59:53 -06:00
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.BR DMXGetScreenAttributes (__libmansuffix__).
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.PP
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The values that are used to compute each value in
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.I masks
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are as follows
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.sp
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.nf
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DMXScreenWindowWidth
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DMXScreenWindowHeight
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DMXScreenWindowXoffset
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DMXScreenWindowYoffset
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DMXRootWindowWidth
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DMXRootWindowHeight
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DMXRootWindowXoffset
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DMXRootWindowYoffset
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DMXRootWindowXorigin
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DMXRootWindowYorigin
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.fi
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.PP
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In general,
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.I mask_count
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should be equal to
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.IR screen_count .
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However, as a convenience,
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.I mask_count
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may be less than
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.IR screen_count ,
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and the last entry in
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.I masks
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will then be used for all of the remaining screens. For example, this
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allows identical changes to be made to several screens using only one
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mask.
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.SH "RETURN VALUE"
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On success, 0 is returned. Otherwise,
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.I error_screen
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is set to the value of the first screen in the list that caused the
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error and a non-zero value is returned. If
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.I screen_count
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or
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.I mask_count
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is less than 1, or if any of the attribute values are not within the
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appropriate bounding boxes,
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.B DmxBadValue
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is returned. If a protocol error occurs,
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.B DmxBadReply
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is returned.
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.PP
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.B DMXChangeScreensAttributes()
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can generate
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.B BadLength
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(if the data provided does not match the data implicitly required by the
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.I screen_count
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and
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.I mask_count
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values),
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.B BadValue
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(if the values in
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.I screens
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are not valid), and
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.B BadAlloc
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errors.
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.SH "SEE ALSO"
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.BR DMXGetScreenCount "(__libmansuffix__), "
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.BR DMXGetScreenAttributes "(__libmansuffix__), "
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.BR DMX "(__libmansuffix__), " Xdmx (1)
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