Index for Section 3X11

Alphabetical listing for X

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XChangePointerControl(3X11)
X11R6
NAME
  XChangePointerControl, XGetPointerControl - control pointer

SYNOPSIS
  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;
	  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 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

Index for Section 3X11

Alphabetical listing for X

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