Manpages - XSetDeviceValuators.3

XSetDeviceValuators - initialize the valuators on an extension input device

  #include <X11/extensions/XInput.h>

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

  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. Valuators are
         numbered beginning with zero.

  num_valuators
         Specifies the number of valuators to be set.

    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 initialization 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.

    BadDevice
           An invalid device was specified. The specified 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.