1997-12-07 08:46:56 +00:00
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.\"
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.\" Copyright (c) 1997
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.\" Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer as
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.\" the first lines of this file unmodified.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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1999-08-28 00:22:10 +00:00
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.\" $FreeBSD$
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1997-12-07 08:46:56 +00:00
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.\"
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.Dd December 3, 1997
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1999-11-15 23:14:32 +00:00
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.Dt MOUSE 4
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2001-07-10 15:31:11 +00:00
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.Os
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1997-12-07 08:46:56 +00:00
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.Sh NAME
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.Nm mouse
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.Nd mouse and pointing device drivers
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.Sh SYNOPSIS
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2001-10-01 16:09:29 +00:00
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.In sys/mouse.h
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1997-12-07 08:46:56 +00:00
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.Sh DESCRIPTION
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The mouse drivers
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.Xr mse 4 ,
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1999-12-05 07:54:43 +00:00
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.Xr psm 4 ,
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.Xr ums 4
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1997-12-07 08:46:56 +00:00
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and
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.Xr sysmouse 4
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provide user programs with movement and button state information of the mouse.
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1999-12-05 07:54:43 +00:00
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Currently there are specific device drivers for bus, InPort, PS/2, and USB mice.
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1997-12-07 08:46:56 +00:00
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The serial mouse is not directly supported by a dedicated driver, but
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it is accessible via the serial device driver or via
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2001-07-14 19:41:16 +00:00
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.Xr moused 8
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1997-12-07 08:46:56 +00:00
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and
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.Xr sysmouse 4 .
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.Pp
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The user program simply opens a mouse device with a
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.Xr open 2
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call and reads
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mouse data from the device via
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.Xr read 2 .
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Movement and button states are usually encoded in fixed-length data packets.
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Some mouse devices may send data in variable length of packets.
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2001-07-14 19:41:16 +00:00
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Actual protocol (data format) used by each driver differs widely.
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1997-12-07 08:46:56 +00:00
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.Pp
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The mouse drivers may have ``non-blocking'' attribute which will make
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the driver return immediately if mouse data is not available.
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.Pp
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Mouse device drivers often offer several levels of operation.
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The current operation level can be examined and changed via
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.Xr ioctl 2
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commands.
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The level zero is the lowest level at which the driver offers the basic
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2001-07-14 19:41:16 +00:00
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service to user programs.
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1997-12-07 08:46:56 +00:00
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Most drivers provide horizontal and vertical movement of the mouse
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and state of up to three buttons at this level.
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At the level one, if supported by the driver, mouse data is encoded
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2001-07-14 19:41:16 +00:00
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in the standard format
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.Dv MOUSE_PROTO_SYSMOUSE
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1997-12-07 08:46:56 +00:00
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as follows:
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.Pp
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.Bl -tag -width Byte_1 -compact
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2001-07-14 19:41:16 +00:00
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.It Byte 1
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1997-12-07 08:46:56 +00:00
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.Bl -tag -width bit_7 -compact
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.It bit 7
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Always one.
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.It bit 6..3
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Always zero.
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.It bit 2
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Left button status; cleared if pressed, otherwise set.
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.It bit 1
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2000-03-01 14:50:24 +00:00
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Middle button status; cleared if pressed, otherwise set.
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Always one,
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1997-12-07 08:46:56 +00:00
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if the device does not have the middle button.
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.It bit 0
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Right button status; cleared if pressed, otherwise set.
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.El
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.It Byte 2
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2001-07-14 19:41:16 +00:00
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The first half of horizontal movement count in two's complement;
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1997-12-07 08:46:56 +00:00
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-128 through 127.
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.It Byte 3
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2001-07-14 19:41:16 +00:00
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The first half of vertical movement count in two's complement;
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1997-12-07 08:46:56 +00:00
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-128 through 127.
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.It Byte 4
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2001-07-14 19:41:16 +00:00
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The second half of the horizontal movement count in two's complement;
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1997-12-07 08:46:56 +00:00
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-128 through 127. To obtain the full horizontal movement count, add
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the byte 2 and 4.
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.It Byte 5
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2001-07-14 19:41:16 +00:00
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The second half of the vertical movement count in two's complement;
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1997-12-07 08:46:56 +00:00
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-128 through 127. To obtain the full vertical movement count, add
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the byte 3 and 5.
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.It Byte 6
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2000-03-01 14:50:24 +00:00
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The bit 7 is always zero.
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2001-07-14 19:41:16 +00:00
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The lower 7 bits encode the first half of
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1999-08-21 04:37:39 +00:00
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Z axis movement count in two's complement; -64 through 63.
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1997-12-07 08:46:56 +00:00
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.It Byte 7
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2000-03-01 14:50:24 +00:00
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The bit 7 is always zero.
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2001-07-14 19:41:16 +00:00
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The lower 7 bits encode the second half of
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1999-08-21 04:37:39 +00:00
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the Z axis movement count in two's complement; -64 through 63.
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1997-12-07 08:46:56 +00:00
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To obtain the full Z axis movement count, add the byte 6 and 7.
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.It Byte 8
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2000-03-01 14:50:24 +00:00
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The bit 7 is always zero.
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The bits 0 through 6 reflect the state
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1997-12-07 08:46:56 +00:00
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of the buttons 4 through 10.
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2000-03-01 14:50:24 +00:00
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If a button is pressed, the corresponding bit is cleared.
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Otherwise
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1997-12-07 08:46:56 +00:00
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the bit is set.
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.El
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.Pp
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The first 5 bytes of this format is compatible with the MouseSystems
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2000-03-01 14:50:24 +00:00
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format.
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2001-07-14 19:41:16 +00:00
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The additional 3 bytes have their MSBs always set to zero.
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1997-12-07 08:46:56 +00:00
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Thus, if the user program can interpret the MouseSystems data format and
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tries to find the first byte of the format by detecting the bit pattern
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2001-07-14 19:41:16 +00:00
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10000xxxb,
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it will discard the additional bytes, thus, be able to decode x, y
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1997-12-07 08:46:56 +00:00
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and states of 3 buttons correctly.
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.Pp
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Device drivers may offer operation levels higher than one.
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Refer to manual pages of individual drivers for details.
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.Sh IOCTLS
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The following
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.Xr ioctl 2
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2000-03-01 14:50:24 +00:00
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commands are defined for the mouse drivers.
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The degree of support
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varies from one driver to another.
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2001-07-14 19:41:16 +00:00
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This section gives general
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1997-12-07 08:46:56 +00:00
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description of the commands.
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Refer to manual pages of individual drivers for specific details.
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.Pp
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.Bl -tag -width MOUSE -compact
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.It Dv MOUSE_GETLEVEL Ar int *level
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.It Dv MOUSE_SETLEVEL Ar int *level
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These commands manipulate the operation level of the mouse driver.
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.Pp
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.It Dv MOUSE_GETHWINFO Ar mousehw_t *hw
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2001-07-14 19:41:16 +00:00
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Returns the hardware information of the attached device in the following
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1997-12-07 08:46:56 +00:00
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Except for the
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.Dv iftype
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field, the device driver may not always fill the structure with correct
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values.
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Consult manual pages of individual drivers for details of support.
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.Bd -literal
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typedef struct mousehw {
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int buttons; /* number of buttons */
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int iftype; /* I/F type */
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int type; /* mouse/track ball/pad... */
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int model; /* I/F dependent model ID */
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int hwid; /* I/F dependent hardware ID */
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} mousehw_t;
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.Ed
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.Pp
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The
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.Dv buttons
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2000-03-01 14:50:24 +00:00
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field holds the number of buttons detected by the driver.
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The driver
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1997-12-07 08:46:56 +00:00
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may put an arbitrary value, such as two, in this field, if it cannot
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determine the exact number.
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.Pp
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The
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.Dv iftype
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is the type of interface:
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.Dv MOUSE_IF_SERIAL ,
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.Dv MOUSE_IF_BUS ,
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.Dv MOUSE_IF_INPORT ,
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.Dv MOUSE_IF_PS2 ,
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1999-12-05 07:54:43 +00:00
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.Dv MOUSE_IF_USB ,
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1997-12-07 08:46:56 +00:00
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.Dv MOUSE_IF_SYSMOUSE
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or
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.Dv MOUSE_IF_UNKNOWN .
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.Pp
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The
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.Dv type
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tells the device type:
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.Dv MOUSE_MOUSE ,
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.Dv MOUSE_TRACKBALL ,
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.Dv MOUSE_STICK ,
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.Dv MOUSE_PAD ,
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or
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.Dv MOUSE_UNKNOWN .
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.Pp
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The
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.Dv model
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2001-07-14 19:41:16 +00:00
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may be
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1997-12-07 08:46:56 +00:00
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.Dv MOUSE_MODEL_GENERIC
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2001-07-14 19:41:16 +00:00
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or one of
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1997-12-07 08:46:56 +00:00
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.Dv MOUSE_MODEL_XXX
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constants.
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.Pp
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The
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.Dv hwid
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2000-03-01 14:50:24 +00:00
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is the ID value returned by the pointing device.
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It
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2001-07-14 19:41:16 +00:00
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depend on the interface type; refer to the manual page of
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1997-12-07 08:46:56 +00:00
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specific mouse drivers for possible values.
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.Pp
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.It Dv MOUSE_GETMODE Ar mousemode_t *mode
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The command reports the current operation parameters of the mouse driver.
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.Bd -literal
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typedef struct mousemode {
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int protocol; /* MOUSE_PROTO_XXX */
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int rate; /* report rate (per sec) */
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int resolution; /* MOUSE_RES_XXX, -1 if unknown */
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int accelfactor; /* acceleration factor */
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int level; /* driver operation level */
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int packetsize; /* the length of the data packet */
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unsigned char syncmask[2]; /* sync. bits */
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} mousemode_t;
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.Ed
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.Pp
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The
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.Dv protocol
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2001-07-14 19:41:16 +00:00
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field tells the format in which the device status is returned
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1997-12-07 08:46:56 +00:00
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when the mouse data is read by the user program.
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2001-07-14 19:41:16 +00:00
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It is one of
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1997-12-07 08:46:56 +00:00
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.Dv MOUSE_PROTO_XXX
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constants.
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.Pp
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The
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.Dv rate
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2001-07-14 19:41:16 +00:00
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field is the status report rate (reports/sec) at which the device will send
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1997-12-07 08:46:56 +00:00
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movement reports to the host computer. -1 if unknown or not applicable.
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.Pp
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The
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.Dv resolution
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field holds a value specifying resolution of the pointing device.
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2001-07-14 19:41:16 +00:00
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It is a positive value or one of
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1997-12-07 08:46:56 +00:00
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.Dv MOUSE_RES_XXX
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constants.
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.Pp
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The
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.Dv accelfactor
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field holds a value to control acceleration feature.
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It must be zero or greater.
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If it is zero, acceleration is disabled.
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.Pp
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The
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.Dv packetsize
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field tells the length of the fixed-size data packet or the length
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of the fixed part of the variable-length packet.
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The size depends on the interface type, the device type and model, the
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protocol and the operation level of the driver.
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.Pp
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The array
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.Dv syncmask
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holds a bit mask and pattern to detect the first byte of the
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data packet.
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.Dv syncmask[0]
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2000-03-01 14:50:24 +00:00
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is the bit mask to be ANDed with a byte.
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If the result is equal to
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1997-12-07 08:46:56 +00:00
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.Dv syncmask[1] ,
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the byte is likely to be the first byte of the data packet.
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Note that this method of detecting the first byte is not 100% reliable,
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thus, should be taken only as an advisory measure.
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.Pp
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.It Dv MOUSE_SETMODE Ar mousemode_t *mode
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The command changes the current operation parameters of the mouse driver
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as specified in
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.Ar mode .
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Only
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.Dv rate ,
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.Dv resolution ,
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2001-07-14 19:41:16 +00:00
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.Dv level
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and
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1997-12-07 08:46:56 +00:00
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.Dv accelfactor
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2000-03-01 14:50:24 +00:00
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may be modifiable.
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Setting values in the other field does not generate
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1997-12-07 08:46:56 +00:00
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error and has no effect.
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.Pp
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If you do not want to change the current setting of a field, put -1
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there.
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2001-07-14 19:41:16 +00:00
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You may also put zero in
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1997-12-07 08:46:56 +00:00
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.Dv resolution
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and
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.Dv rate ,
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and the default value for the fields will be selected.
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.\" .Pp
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.\" .It Dv MOUSE_GETVARS Ar mousevar_t *vars
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2001-07-14 19:41:16 +00:00
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.\" Get internal variables of the mouse driver.
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1997-12-07 08:46:56 +00:00
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.\" The variables which can be manipulated through these commands
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2001-07-14 19:41:16 +00:00
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.\" are specific to each driver.
|
1997-12-07 08:46:56 +00:00
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|
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.\" This command may not be supported by all drivers.
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.\" .Bd -literal
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.\" typedef struct mousevar {
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.\" int var[16]; /* internal variables */
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.\" } mousevar_t;
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.\" .Ed
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.\" .Pp
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.\" If the commands are supported, the first element of the array is
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2001-07-14 19:41:16 +00:00
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.\" filled with a signature value.
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|
.\" Apart from the signature data, there is currently no standard concerning
|
1997-12-07 08:46:56 +00:00
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.\" the other elements of the buffer.
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.\" .Pp
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.\" .It Dv MOUSE_SETVARS Ar mousevar_t *vars
|
2001-07-14 19:41:16 +00:00
|
|
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.\" Get internal variables of the mouse driver.
|
1997-12-07 08:46:56 +00:00
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|
.\" The first element of the array must be a signature value.
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.\" This command may not be supported by all drivers.
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.Pp
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|
.It Dv MOUSE_READDATA Ar mousedata_t *data
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|
|
The command reads the raw data from the device.
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|
|
|
.Bd -literal
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|
typedef struct mousedata {
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int len; /* # of data in the buffer */
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|
int buf[16]; /* data buffer */
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} mousedata_t;
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.Ed
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.Pp
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|
The calling process must fill the
|
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|
.Dv len
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|
|
|
field with the number of bytes to be read into the buffer.
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|
This command may not be supported by all drivers.
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|
|
.Pp
|
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|
|
.It Dv MOUSE_READSTATE Ar mousedata_t *state
|
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|
|
The command reads the raw state data from the device.
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|
|
|
It uses the same structure as above.
|
|
|
|
This command may not be supported by all drivers.
|
|
|
|
.Pp
|
1999-11-09 12:18:10 +00:00
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|
|
.It Dv MOUSE_GETSTATUS Ar mousestatus_t *status
|
2001-07-14 19:41:16 +00:00
|
|
|
The command returns the current state of buttons and
|
1997-12-07 08:46:56 +00:00
|
|
|
movement counts in the following structure.
|
|
|
|
.Bd -literal
|
|
|
|
typedef struct mousestatus {
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|
|
|
int flags; /* state change flags */
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|
|
int button; /* button status */
|
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|
|
int obutton; /* previous button status */
|
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|
int dx; /* x movement */
|
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|
|
int dy; /* y movement */
|
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|
|
int dz; /* z movement */
|
|
|
|
} mousestatus_t;
|
|
|
|
.Ed
|
|
|
|
.Pp
|
|
|
|
The
|
|
|
|
.Dv button
|
|
|
|
and
|
|
|
|
.Dv obutton
|
|
|
|
fields hold the current and the previous state of the mouse buttons.
|
|
|
|
When a button is pressed, the corresponding bit is set.
|
|
|
|
The mouse drivers may support up to 31 buttons with the bit 0 through 31.
|
2001-07-14 19:41:16 +00:00
|
|
|
Few button bits are defined as
|
1997-12-07 08:46:56 +00:00
|
|
|
.Dv MOUSE_BUTTON1DOWN
|
2001-07-14 19:41:16 +00:00
|
|
|
through
|
1997-12-07 08:46:56 +00:00
|
|
|
.Dv MOUSE_BUTTON8DOWN .
|
|
|
|
The first three buttons correspond to left, middle and right buttons.
|
|
|
|
.Pp
|
2001-07-14 19:41:16 +00:00
|
|
|
If the state of the button has changed since the last
|
1999-11-09 12:18:10 +00:00
|
|
|
.Dv MOUSE_GETSTATUS
|
1997-12-07 08:46:56 +00:00
|
|
|
call, the corresponding bit in the
|
|
|
|
.Dv flags
|
2001-07-14 19:41:16 +00:00
|
|
|
field will be set.
|
1997-12-07 08:46:56 +00:00
|
|
|
If the mouse has moved since the last call, the
|
|
|
|
.Dv MOUSE_POSCHANGED
|
|
|
|
bit in the
|
|
|
|
.Dv flags
|
|
|
|
field will also be set.
|
|
|
|
.Pp
|
2001-07-14 19:41:16 +00:00
|
|
|
The other fields hold movement counts since the last
|
1999-11-09 12:18:10 +00:00
|
|
|
.Dv MOUSE_GETSTATUS
|
2000-03-01 14:50:24 +00:00
|
|
|
call.
|
|
|
|
The internal counters will be reset after every call to this
|
1997-12-07 08:46:56 +00:00
|
|
|
command.
|
|
|
|
.El
|
|
|
|
.Sh FILES
|
|
|
|
.Bl -tag -width /dev/sysmouseXX -compact
|
|
|
|
.It Pa /dev/cuaa%d
|
|
|
|
serial ports
|
|
|
|
.It Pa /dev/mse%d
|
|
|
|
bus and InPort mouse device
|
|
|
|
.It Pa /dev/psm%d
|
|
|
|
PS/2 mouse device
|
|
|
|
.It Pa /dev/sysmouse
|
|
|
|
virtual mouse device
|
1999-12-05 07:54:43 +00:00
|
|
|
.It Pa /dev/ums%d
|
|
|
|
USB mouse device
|
1997-12-07 08:46:56 +00:00
|
|
|
.El
|
|
|
|
.Sh SEE ALSO
|
|
|
|
.Xr ioctl 2 ,
|
|
|
|
.Xr mse 4 ,
|
|
|
|
.Xr psm 4 ,
|
|
|
|
.Xr sysmouse 4 ,
|
1999-12-05 07:54:43 +00:00
|
|
|
.Xr ums 4 ,
|
1997-12-07 08:46:56 +00:00
|
|
|
.Xr moused 8
|
|
|
|
.\".Sh HISTORY
|
1998-03-12 07:31:21 +00:00
|
|
|
.Sh AUTHORS
|
1997-12-07 08:46:56 +00:00
|
|
|
This manual page was written by
|
1998-03-12 07:31:21 +00:00
|
|
|
.An Kazutaka Yokota Aq yokota@FreeBSD.org .
|