GLUTSPACEBALLBUTTONFUNC(3)

NAME
glutSpaceballButtonFunc - Sets a spaceball button callback.

LIBRARY
OpenGLUT - input

SYNOPSIS
#include <openglut.h>
void
glutSpaceballButtonFunc(void( *callback )( int button, int state ));

PARAMETERS

callback Client spaceball button hook.

DESCRIPTION
This function registers a callback for a spaceball to report buttons. A spaceball has six axes of freedom (three of motion and three of orientation), plus buttons. The spaceball has glutDeviceGet( GLUT_NUM_SPACEBALL_BUTTONS)

and numbers them from 1. Button state is either GLUT_UP or GLUT_DOWN.

The callback is bound to the current window .

CAVEATS
OpenGLUT does not implement spaceball support.

In contrast, mouse buttons are numbered from 0 in the GLUT API. This is a wrinkle.

SEE ALSO
glutSpaceballRotateFunc(3) glutSpaceballMotiononFunc,(3)