Struct Params 

#[repr(C)]
pub struct Params {
    pub handler_step_func: extern "C" fn(data: *const u8, remaining: usize),
    pub handler_step_data: *const u8,
    pub handler_func: extern "C" fn(data: *const u8, result: isize, template: *mut u8),
    pub handler_data: *const u8,
}

Parameters of enroll

Fields

handler_step_func: extern "C" fn(data: *const u8, remaining: usize)

Callback for each enrollment step.

This handler may be called multiple times during the enrollment process. The argument is the estimated number of remaining steps.

The handler is unregistered when the enrollment process is over.

handler_step_data: *const u8

handler_func: extern "C" fn(data: *const u8, result: isize, template: *mut u8)

Callback when the enrollment process finishes.

This handler is called at most once. The template pointer is allocated by the scheduler and contains the template ID. Ownership is transferred to the handler. In case of error (result is negative), the pointer is null.

The handler is unregistered when the enrollment process is over. When called, it is unregistered before being called.

handler_data: *const u8

Trait Implementations

impl Clone for Params

fn clone(&self) -> Params

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Params

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for Params