Signature
glutDialsFunc(
function
)
Specify handler for GLUT 'Dials' events
def handler( (int) dial, (int) value ):
return None
Parameters
| Variables | Description |
|---|---|
| func |
The new dials callback function.
|
Description
glutDialsFunc
sets the dial & button box dials callback for the current window. The dial &
button box dials callback for a window is called when the window has dial & button box input focus (normally, when
the mouse is in the window) and the user generates dial & button box dial changes. The dial parameter will be the
dial number (starting at one). The number of available dial & button box dials can be determined with
glutDeviceGet(GLUT_NUM_DIALS)
. The value measures the absolute rotation in degrees. Dial
values do not "roll over" with each complete rotation but continue to accumulate degrees (until the int dial value
overflows).
Registering a dial & button box dials callback when a dial & button box device is not available is ineffectual
and not an error. In this case, no dial & button box dials callbacks will be generated.
Passing
NULL
to
glutDialsFunc
disables the generation of dial & button
box dials callbacks. When a new window is created, no dial & button box dials callback is initially registered.