man XChangePointerControl (Fonctions bibliothèques) - control pointer
NAME
XChangePointerControl, XGetPointerControl - control pointer
SYNTAX
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 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 for the pointer values to be set, or the parameters are unchanged. Negative values (other than -1) generate a error, as does a zero value for the accel_denominator argument.
can generate a error.
The function returns the pointer's current acceleration multiplier and acceleration threshold.
DIAGNOSTICS
- 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