glutTabletMotionFunc  - sets the special keyboard callback
       for the current window.

SYNTAX

       void glutTabletMotionFunc(void (*func)(int x, int y));

ARGUMENTS

       func      The new entry callback function.

DESCRIPTION

       glutTabletMotionFunc sets the tablet motion  callback  for
       the  current window. The tablet motion callback for a win-
       dow is called when the window has tablet input focus (nor-
       mally,  when the mouse is in the window) and the user gen-
       erates tablet motion. The  x  and  y  callback  parameters
       indicate  the  absolute position of the tablet ``puck'' on
       the tablet. The callback parameters are normalized  to  be
       within the range of 0 to 2000 inclusive.

       Registering  a tablet motion callback when a tablet device
       is not available is ineffectual and not an error. In  this
       case, no tablet motion callbacks will be generated.

       Passing  NULL to glutTabletMotionFunc disables the genera-
       tion of tablet motion callbacks. When a new window is cre-
       ated, no tablet motion callback is initially registered.

SEE ALSO

       glutTabletButtonFunc, glutDeviceGet, glutMotionFunc,
       glutSpaceballMotionFunc

AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)