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 call-back callback
back 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 glutDe-viceGet(GLUT_NUM_TABLET_BUTTONS). glutDeviceGet(GLUT_NUM_TABLET_BUTTONS).
viceGet(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(3G), glutDeviceGet(3G), glutMotionFunc(3G), glutSpaceballMotionFunc(3G)
AUTHOR
Mark J. Kilgard (mjk@nvidia.com)
GLUT 3.7 glutTabletButtonFunc(3GLUT)
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