XGetPointerControl.3X11.z(3X11)



     X Version 11 (Release 5)              XChangePointerControl(3X11)



     NAME
          XChangePointerControl, XGetPointerControl - control pointer

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

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




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                         X Version 11 (ReleX
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gePointerControl(3X11)



     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 acceleration 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

























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