glutSpaceballMotionFunc - sets the Spaceball motion callback for the current
window.
void glutSpaceballMotionFunc(void (*func)(int x, int y, int z));
- func
- The new entry callback function.
glutSpaceballMotionFunc sets the Spaceball motion callback for the current
window. The Spaceball motion callback for a window is called when the window
has Spaceball input focus (normally, when the mouse is in the window) and the
user generates Spaceball translations. The x, y, and z callback parameters
indicate the translations along the X, Y, and Z axes. The callback parameters
are normalized to be within the range of -1000 to 1000 inclusive.
Registering a Spaceball motion callback when a Spaceball device is
not available has no effect and is not an error. In this case, no Spaceball
motion callbacks will be generated.
Passing NULL to glutSpaceballMotionFunc disables the generation of
Spaceball motion callbacks. When a new window is created, no Spaceball
motion callback is initially registered.
glutSpaceballRotateFunc, glutSpaceballButtonFunc, glutMotionFunc,
glutTabletMotionFunc, glutJoystickFunc, glutDeviceGet
Mark J. Kilgard (mjk@nvidia.com)