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glutTabletButtonFunc(3GLUT)          GLUT          glutTabletButtonFunc(3GLUT)


NAME

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


SYNTAX


       void glutTabletButtonFunc(void (*func)(int button, int state,
                                 int x, int y));


ARGUMENTS

       func      The new tablet button callback function.


DESCRIPTION

       glutTabletButtonFunc sets the tablet button callback for the current
       window. The tablet button callback for a window is called when the
       window has tablet input focus (normally, when the mouse is in the
       window) and the user generates tablet button presses. The button
       parameter will be the button number (starting at one). The number of
       available tablet buttons can be determined with
       glutDeviceGet(GLUT_NUM_TABLET_BUTTONS). The state is either GLUT_UP or
       GLUT_DOWN indicating whether the callback was due to a release or press
       respectively. The x and y callback parameters indicate the window
       relative coordinates when the tablet button state changed.

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

       Passing NULL to glutTabletButtonFunc disables the generation of tablet
       button callbacks. When a new window is created, no tablet button
       callback is initially registered.


SEE ALSO

       glutTabletMotionFunc, glutDeviceGet, glutMotionFunc,
       glutSpaceballMotionFunc


AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT                                  3.7          glutTabletButtonFunc(3GLUT)

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