Signature
glutSpaceballButtonFunc(
function
)
Specify handler for GLUT 'SpaceballButton' events
def handler( (int) button, (int) state ):
return None
Parameters
| Variables | Description |
|---|---|
| func |
The new spaceball button callback function.
|
Description
glutSpaceballButtonFunc
sets the Spaceball button callback for the current window. The Spaceball
button 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 button presses. The
button
parameter will be the button
number (starting at one). The number of available Spaceball buttons can be determined with
glutDeviceGet(GLUT_NUM_SPACEBALL_BUTTONS)
. The state is either
GLUT_UP
or
GLUT_DOWN
indicating whether the callback was due to a release or
press respectively.
Registering a Spaceball button callback when a Spaceball device is not available is ineffectual and not an error. In
this case, no Spaceball button callbacks will be generated.
Passing
NULL
to
glutSpaceballButtonFunc
disables the generation of Spaceball
button callbacks. When a new window is created, no Spaceball button callback is initially registered.