449 lines
11 KiB
Groff
449 lines
11 KiB
Groff
'\" t
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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
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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 the rights to use, copy, modify, merge, publish,
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.\" distribute, sublicense, and/or sell copies of the Software, and to
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.\" permit persons to whom the Software is furnished to do so, subject to
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.\" the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be included
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.\" in 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
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.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
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.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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.\" OTHER DEALINGS IN THE SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall
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.\" not be used in advertising or otherwise to promote the sale, use or
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.\" other dealings in this Software without prior written authorization
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.\" from the X Consortium.
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.\"
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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
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.\" Digital Equipment Corporation
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.\"
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.\" Portions Copyright \(co 1990, 1991 by
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.\" Tektronix, Inc.
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.\"
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.\" Permission to use, copy, modify and distribute this documentation for
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.\" any purpose and without fee is hereby granted, provided that the above
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.\" copyright notice appears in all copies and that both that copyright notice
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.\" and this permission notice appear in all copies, and that the names of
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.\" Digital and Tektronix not be used in in advertising or publicity pertaining
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.\" to this documentation without specific, written prior permission.
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.\" Digital and Tektronix makes no representations about the suitability
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.\" of this documentation for any purpose.
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.\" It is provided ``as is'' without express or implied warranty.
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.\"
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.\"
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft 1
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.nf
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.de FN
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.de IN \" send an index entry to the stderr
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.de C{
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.KS
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.nf
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.D
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.\"
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.\" choose appropriate monospace font
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.\" the imagen conditional, 480,
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.\" may be changed to L if LB is too
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.\" heavy for your eyes...
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.\"
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.ie "\\*(.T"480" .ft L
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.el .ie "\\*(.T"300" .ft L
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.el .ie "\\*(.T"202" .ft PO
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..
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'\" t
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.TH XChangeKeyboardControl __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
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.SH NAME
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XChangeKeyboardControl, XGetKeyboardControl, XAutoRepeatOn, XAutoRepeatOff, XBell, XQueryKeymap, XKeyboardControl \- manipulate keyboard settings and keyboard control structure
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.SH SYNTAX
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.HP
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int XChangeKeyboardControl\^(\^Display *\fIdisplay\fP, unsigned long
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\fIvalue_mask\fP\^, XKeyboardControl *\fIvalues\fP\^);
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.HP
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int XGetKeyboardControl\^(\^Display *\fIdisplay\fP, XKeyboardState
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*\fIvalues_return\fP\^);
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.HP
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int XAutoRepeatOn\^(\^Display *\fIdisplay\fP\^);
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.HP
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int XAutoRepeatOff\^(\^Display *\fIdisplay\fP\^);
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.HP
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int XBell\^(\^Display *\fIdisplay\fP, int \fIpercent\fP\^);
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.HP
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int XQueryKeymap\^(\^Display *\fIdisplay\fP, char \fIkeys_return\fP[32]\^);
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.SH ARGUMENTS
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.IP \fIkeys_return\fP 1i
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Returns an array of bytes that identifies which keys are pressed down.
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Each bit represents one key of the keyboard.
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.IP \fIpercent\fP 1i
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Specifies the volume for the bell,
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which can range from \-100 to 100 inclusive.
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.IP \fIvalue_mask\fP 1i
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Specifies which controls to change.
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This mask is the bitwise inclusive OR of the valid control mask bits.
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.IP \fIvalues\fP 1i
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Specifies one value for each bit set to 1 in the mask.
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.IP \fIvalues_return\fP 1i
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Returns the current keyboard controls in the specified
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.ZN XKeyboardState
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structure.
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.SH DESCRIPTION
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The
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.ZN XChangeKeyboardControl
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function controls the keyboard characteristics defined by the
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.ZN XKeyboardControl
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structure.
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The value_mask argument specifies which values are to be changed.
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.LP
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.ZN XChangeKeyboardControl
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can generate
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.ZN BadMatch
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and
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.ZN BadValue
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errors.
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.LP
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The
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.ZN XGetKeyboardControl
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function returns the current control values for the keyboard to the
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.ZN XKeyboardState
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structure.
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.LP
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The
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.ZN XAutoRepeatOn
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function turns on auto-repeat for the keyboard on the specified display.
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.LP
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The
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.ZN XAutoRepeatOff
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function turns off auto-repeat for the keyboard on the specified display.
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.LP
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The
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.ZN XBell
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function rings the bell on the keyboard on the specified display, if possible.
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The specified volume is relative to the base volume for the keyboard.
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If the value for the percent argument is not in the range \-100 to 100
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inclusive, a
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.ZN BadValue
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error results.
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The volume at which the bell rings
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when the percent argument is nonnegative is:
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.IP
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base \- [(base * percent) / 100] + percent
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.LP
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The volume at which the bell rings
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when the percent argument is negative is:
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.IP
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base + [(base * percent) / 100]
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.LP
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To change the base volume of the bell, use
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.ZN XChangeKeyboardControl .
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.LP
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.ZN XBell
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can generate a
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.ZN BadValue
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error.
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.LP
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The
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.ZN XQueryKeymap
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function returns a bit vector for the logical state of the keyboard,
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where each bit set to 1 indicates that the corresponding key is currently
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pressed down.
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The vector is represented as 32 bytes.
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Byte N (from 0) contains the bits for keys 8N to 8N + 7
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with the least significant bit in the byte representing key 8N.
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.LP
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Note that the logical state of a device (as seen by client applications)
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may lag the physical state if device event processing is frozen.
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.SH STRUCTURES
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The
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.ZN XKeyboardControl
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structure contains:
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.LP
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.LP
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/\&* Mask bits for ChangeKeyboardControl */
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.TS
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lw(.5i) lw(2.5i) lw(.8i).
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T{
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\&#define
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T} T{
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.ZN KBKeyClickPercent
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T} T{
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(1L<<0)
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T}
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T{
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\&#define
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T} T{
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.ZN KBBellPercent
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T} T{
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(1L<<1)
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T}
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T{
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\&#define
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T} T{
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.ZN KBBellPitch
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T} T{
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(1L<<2)
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T}
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T{
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\&#define
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T} T{
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.ZN KBBellDuration
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T} T{
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(1L<<3)
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T}
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T{
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\&#define
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T} T{
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.ZN KBLed
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T} T{
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(1L<<4)
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T}
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T{
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\&#define
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T} T{
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.ZN KBLedMode
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T} T{
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(1L<<5)
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T}
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T{
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\&#define
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T} T{
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.ZN KBKey
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T} T{
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(1L<<6)
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T}
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T{
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\&#define
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T} T{
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.ZN KBAutoRepeatMode
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T} T{
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(1L<<7)
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T}
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.TE
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.IN "XKeyboardControl" "" "@DEF@"
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.Ds 0
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.TA .5i 2.5i
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.ta .5i 2.5i
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/\&* Values */
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typedef struct {
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int key_click_percent;
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int bell_percent;
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int bell_pitch;
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int bell_duration;
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int led;
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int led_mode; /\&* LedModeOn, LedModeOff */
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int key;
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int auto_repeat_mode; /\&* AutoRepeatModeOff, AutoRepeatModeOn,
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AutoRepeatModeDefault */
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} XKeyboardControl;
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.De
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.LP
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The key_click_percent member sets the volume for key clicks between 0 (off)
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and 100 (loud) inclusive, if possible.
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A setting of \-1 restores the default.
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Other negative values generate a
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.ZN BadValue
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error.
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.LP
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The bell_percent sets the base volume for the bell between 0 (off) and 100
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(loud) inclusive, if possible.
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A setting of \-1 restores the default.
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Other negative values generate a
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.ZN BadValue
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error.
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The bell_pitch member sets the pitch (specified in Hz) of the bell, if possible.
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A setting of \-1 restores the default.
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Other negative values generate a
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.ZN BadValue
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error.
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The bell_duration member sets the duration of the
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bell specified in milliseconds, if possible.
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A setting of \-1 restores the default.
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Other negative values generate a
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.ZN BadValue
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error.
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.LP
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If both the led_mode and led members are specified,
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the state of that LED is changed, if possible.
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The led_mode member can be set to
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.ZN LedModeOn
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or
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.ZN LedModeOff .
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If only led_mode is specified, the state of
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all LEDs are changed, if possible.
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At most 32 LEDs numbered from one are supported.
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No standard interpretation of LEDs is defined.
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If led is specified without led_mode, a
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.ZN BadMatch
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error results.
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.LP
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If both the auto_repeat_mode and key members are specified,
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the auto_repeat_mode of that key is changed (according to
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.ZN AutoRepeatModeOn ,
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.ZN AutoRepeatModeOff ,
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or
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.ZN AutoRepeatModeDefault ),
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if possible.
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If only auto_repeat_mode is
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specified, the global auto_repeat_mode for the entire keyboard is
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changed, if possible, and does not affect the per-key settings.
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If a key is specified without an auto_repeat_mode, a
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.ZN BadMatch
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error results.
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Each key has an individual mode of whether or not it should auto-repeat
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and a default setting for the mode.
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In addition,
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there is a global mode of whether auto-repeat should be enabled or not
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and a default setting for that mode.
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When global mode is
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.ZN AutoRepeatModeOn ,
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keys should obey their individual auto-repeat modes.
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When global mode is
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.ZN AutoRepeatModeOff ,
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no keys should auto-repeat.
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An auto-repeating key generates alternating
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.ZN KeyPress
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and
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.ZN KeyRelease
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events.
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When a key is used as a modifier,
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it is desirable for the key not to auto-repeat,
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regardless of its auto-repeat setting.
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.LP
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The
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.ZN XKeyboardState
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structure contains:
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.LP
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.Ds 0
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.TA .5i
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.ta .5i
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typedef struct {
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int key_click_percent;
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int bell_percent;
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unsigned int bell_pitch, bell_duration;
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unsigned long led_mask;
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int global_auto_repeat;
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char auto_repeats[32];
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} XKeyboardState;
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.De
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.LP
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For the LEDs,
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the least significant bit of led_mask corresponds to LED one,
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and each bit set to 1 in led_mask indicates an LED that is lit.
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The global_auto_repeat member can be set to
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.ZN AutoRepeatModeOn
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or
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.ZN AutoRepeatModeOff .
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The auto_repeats member is a bit vector.
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Each bit set to 1 indicates that auto-repeat is enabled
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for the corresponding key.
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The vector is represented as 32 bytes.
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Byte N (from 0) contains the bits for keys 8N to 8N + 7
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with the least significant bit in the byte representing key 8N.
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.SH DIAGNOSTICS
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.TP 1i
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.ZN BadMatch
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Some argument or pair of arguments has the correct type and range but fails
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to match in some other way required by the request.
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.TP 1i
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.ZN BadValue
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Some numeric value falls outside the range of values accepted by the request.
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Unless a specific range is specified for an argument, the full range defined
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by the argument's type is accepted. Any argument defined as a set of
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alternatives can generate this error.
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.SH "SEE ALSO"
|
|
XChangeKeyboardMapping(__libmansuffix__),
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XSetPointerMapping(__libmansuffix__)
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.br
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\fI\*(xL\fP
|