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 parame-
ter will be the button number (starting at one). The number of available tablet buttons can be determined with glutDe-
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, glutDeviceGet, glutMotionFunc, glutSpaceballMotionFunc
AUTHOR
Mark J. Kilgard (mjk@nvidia.com)
GLUT
3.7 glutTabletButtonFunc(3GLUT)