XSetDeviceValuators


NAME

XSetDeviceValuators - initialize the valuators on an extension input device

SYNTAX

XSetDeviceValuators(display, device, valuators, first_valuator, num_valuators) Display *display; XDevice *device; int *valuators; int first_valuator; int num_valuators;

ARGUMENTS

display Specifies the connection to the X server. device Specifies the device whose valuators are to be initialized. valuators Specifies a pointer to an array of integer values to be used to initialize the device valuators. first_valuator Specifies the first valuator to be set. Valu- ators are numbered beginning with zero. num_valuators Specifies the number of valuators to be set.

DESCRIPTION

The XSetDeviceValuators request sets the current values of the valuators of an input device. The valuators in the range first_valuator to (first_valuator + num_valuators) are set to the specified values. Valuators are numbered beginning with 0. Not all input devices support initial- ization of valuator values. If this request is made to a device that does not support valuators initialization, a BadMatch error will occur. If the request succeeds, a status of Success is returned. If another client has the device grabbed, a status of AlreadyGrabbed is returned. XSetDeviceValuators can generate a BadLength, BadDevice , BadMatch, or BadValue error.

DIAGNOSTICS

BadDevice An invalid device was specified. The speci- fied device does not exist or has not been opened by this client via XOpenInputDevice. BadMatch This error may occur if an XSetDeviceValuators request is made specifying a device that has no valuators and reports no axes of motion, or if such a request is made specifying a device that does not support valuator initialization. BadValue An invalid first_valuator or num_valuators values was specified.

SEE ALSO

Programming with Xlib

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