XGetPointerControl(3X11)



XChangePointerControl(3X11)
XLIB FUNCTION
XC
ShangePointerControl(3X11)


NAME
       XChangePointerControl, XGetPointerControl - control
       pointer

SYNTAX
       XChangePointerControl(display, doaccel, dothreshold,
       accelnumerator,
                               acceldenominator, threshold)
             Display *display;
             Bool doaccel, dothreshold;
             int accelnumerator, acceldenominator;
             int threshold;

       XGetPointerControl(display, accelnumeratorreturn,
       acceldenominatorreturn,
                              thresholdreturn)
             Display *display;
             int *accelnumeratorreturn,
       *acceldenominatorreturn;
             int *thresholdreturn;

ARGUMENTS
       acceldenominator
                 Specifies the denominator for the acceleration
                 multiplier.

       acceldenominatorreturn
                 Returns the denominator for the acceleration
                 multiplier.

       accelnumerator
                 Specifies the numerator for the acceleration
                 multiplier.

       accelnumeratorreturn
                 Returns the numerator for the acceleration mul-
                 tiplier.

       display   Specifies the connection to the X server.

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

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

       threshold Specifies the acceleration threshold.

       thresholdreturn
                 Returns the acceleration threshold.





X Version 11                Release 5                           1



XChangePointerControl(3X11)
XLIB FUNCTION
XC
ShangePointerControl(3X11)


DESCRIPTION
       The XChangePointerControl function defines how the point-
       ing device moves.  The acceleration, expressed as a frac-
       tion, is a multiplier for movement.  For example, specify-
       ing 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 cur-
       rent acceleration multiplier and acceleration threshold.

DIAGNOSTICS
       BadValue  Some numeric value falls outside the range of
                 values accepted by the request.  Unless a spe-
                 cific 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                Release 5                           2

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