xchangepointercontrol(3x11) [ultrix man page]
XChangePointerControl(3X11) MIT X11R4 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. 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. Accelera- tion 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 X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys XChangePointerControl(3X11)
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XChangePointerControl(3X11) XLIB FUNCTIONS 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. 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 argu- ment, 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 6.6 XChangePointerControl(3X11)