195 lines
5.0 KiB
Plaintext
195 lines
5.0 KiB
Plaintext
.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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.TH XChangePointerControl 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
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.SH NAME
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XChangePointerControl, XGetPointerControl \- control pointer
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.SH SYNTAX
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.\" $Header: XChPointCon.f,v 1.1 88/02/26 09:58:33 mento Exp $
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XChangePointerControl\^(\^\fIdisplay\fP, \fIdo_accel\fP\^, \fIdo_threshold\fP\^, \fIaccel_numerator\fP\^,
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.br
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\fIaccel_denominator\fP\^, \fIthreshold\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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Bool \fIdo_accel\fP\^, \fIdo_threshold\fP\^;
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.br
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int \fIaccel_numerator\fP\^, \fIaccel_denominator\fP\^;
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.br
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int \fIthreshold\fP\^;
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.LP
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.\" $Header: XGetPntrCnt.f,v 1.1 88/02/26 10:00:55 mento Exp $
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XGetPointerControl\^(\^\fIdisplay\fP, \fIaccel_numerator_return\fP\^, \fIaccel_denominator_return\fP\^,
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.br
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\fIthreshold_return\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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int *\fIaccel_numerator_return\fP\^, *\fIaccel_denominator_return\fP\^;
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.br
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int *\fIthreshold_return\fP\^;
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.SH ARGUMENTS
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.\" $Header: acceldenom.a,v 1.1 88/02/26 10:04:37 mento Exp $
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.IP \fIaccel_denominator\fP 1i
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Specifies the denominator for the acceleration multiplier.
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.\" $Header: acceldenomrt.a,v 1.1 88/02/26 10:04:37 mento Exp $
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.IP \fIaccel_denominator_return\fP 1i
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Returns the denominator for the acceleration multiplier.
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.\" $Header: accelnum.a,v 1.1 88/02/26 10:04:44 mento Exp $
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.IP \fIaccel_numerator\fP 1i
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Specifies the numerator for the acceleration multiplier.
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.\" $Header: accelnumret.a,v 1.1 88/02/26 10:04:45 mento Exp $
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.IP \fIaccel_numerator_return\fP 1i
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Returns the numerator for the acceleration multiplier.
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.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.\" $Header: doaccel.a,v 1.4 88/05/14 09:22:57 mento Exp $
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.IP \fIdo_accel\fP 1i
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Specifies a Boolean value that controls whether the values for
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the accel_numerator or accel_denominator are used.
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.\" $Header: dothreshold.a,v 1.5 88/05/14 09:24:07 mento Exp $
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.IP \fIdo_threshold\fP 1i
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Specifies a Boolean value that controls whether the value for the
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threshold is used.
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.\" $Header: threshold.a,v 1.1 88/02/26 10:31:38 mento Exp $
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.IP \fIthreshold\fP 1i
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Specifies the acceleration threshold.
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.\" $Header: thresholdret.a,v 1.1 88/02/26 10:31:39 mento Exp $
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.IP \fIthreshold_return\fP 1i
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Returns the acceleration threshold.
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.SH DESCRIPTION
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.\" $Header: XChPointCon.d,v 1.2 88/06/11 07:49:03 mento Exp $
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The
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.ZN XChangePointerControl
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function defines how the pointing device moves.
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The acceleration, expressed as a fraction, is a
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multiplier for movement.
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For example,
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specifying 3/1 means the pointer moves three times as fast as normal.
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The fraction may be rounded arbitrarily by the X server.
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Acceleration
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only takes effect if the pointer moves more than threshold pixels at
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once and only applies to the amount beyond the value in the threshold argument.
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Setting a value to \-1 restores the default.
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The values of the do_accel and do_threshold arguments must be
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.ZN True
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for the pointer values to be set,
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or the parameters are unchanged.
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Negative values (other than \-1) generate a
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.ZN BadValue
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error, as does a zero value
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for the accel_denominator argument.
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.LP
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.ZN XChangePointerControl
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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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.\" $Header: XGetPntrCnt.d,v 1.1 88/02/26 10:48:32 mento Exp $
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The
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.ZN XGetPointerControl
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function returns the pointer's current acceleration multiplier
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and acceleration threshold.
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.SH DIAGNOSTICS
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.\" $Header: badvalue.e,v 1.1 87/09/04 08:23:19 mento Exp $
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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"
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\fI\*(xL\fP
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