XGetPointerControl man page on QNX

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XChangePointerControl(3)	XLIB FUNCTIONS	      XChangePointerControl(3)

NAME
       XChangePointerControl, XGetPointerControl - control pointer

SYNTAX
       int XChangePointerControl(Display *display, Bool do_accel, Bool
	      do_threshold, int accel_numerator, int accel_denominator, int
	      threshold);

       int XGetPointerControl(Display *display, int *accel_numerator_return,
	      int *accel_denominator_return, int *threshold_return);

ARGUMENTS
       accel_denominator
		 Specifies the denominator for the acceleration multiplier.

       accel_denominator_return
		 Returns the denominator for the acceleration multiplier.

       accel_numerator
		 Specifies the numerator for the acceleration multiplier.

       accel_numerator_return
		 Returns the numerator for the acceleration multiplier.

       display	 Specifies the connection to the X server.

       do_accel	 Specifies a Boolean value that controls whether the values
		 for the accel_numerator or accel_denominator are used.

       do_threshold
		 Specifies a Boolean value that controls whether the value for
		 the threshold is used.

       threshold Specifies the acceleration threshold.

       threshold_return
		 Returns the acceleration threshold.

DESCRIPTION
       The XChangePointerControl function defines how the pointing device
       moves.  The acceleration, expressed as a fraction, is a multiplier for
       movement.  For example, specifying 3/1 means the pointer moves three
       times as fast as normal.	 The fraction may be rounded arbitrarily by
       the X server.  Acceleration only takes effect if the pointer moves more
       than threshold pixels at once and only applies to the amount beyond the
       value in the threshold argument.	 Setting a value to -1 restores the
       default.	 The values of the do_accel and do_threshold arguments must be
       True for the pointer values to be set, or the parameters are unchanged.
       Negative values (other than -1) generate a BadValue error, as does a
       zero value for the accel_denominator argument.

       XChangePointerControl can generate a BadValue error.

       The XGetPointerControl function returns the pointer's current accelera‚Äź
       tion multiplier and acceleration threshold.

DIAGNOSTICS
       BadValue	 Some numeric value falls outside the range of values accepted
		 by the request.  Unless a specific range is specified for an
		 argument, the full range defined by the argument's type is
		 accepted.  Any argument defined as a set of alternatives can
		 generate this error.

SEE ALSO
       Xlib - C Language X Interface

X Version 11			 libX11 1.3.5	      XChangePointerControl(3)
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