Struct Params 

#[repr(C)]
pub struct Params {
    pub button: usize,
    pub handler_func: extern "C" fn(data: *const u8, state: usize),
    pub handler_data: *const u8,
}

Parameters of register

Fields

button: usize

Index of the button to listen to.

handler_func: extern "C" fn(data: *const u8, state: usize)

Function called on button events.

The function takes its opaque data and the new button state as arguments.

handler_data: *const u8

The opaque data to use when calling the handler function.

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 Copy for Params

impl Debug for Params

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

Formats the value using the given formatter.