pub type PhidgetStepper_OnVelocityChangeCallback = Option<unsafe extern "C" fn(ch: PhidgetStepperHandle, ctx: *mut c_void, velocity: f64)>;Aliased Type§
pub enum PhidgetStepper_OnVelocityChangeCallback {
None,
Some(unsafe extern "C" fn(*mut _PhidgetStepper, *mut c_void, f64)),
}