Struct lv_observer_t 

#[repr(C)]
pub struct lv_observer_t {
    pub subject: *mut lv_subject_t,
    pub cb: lv_observer_cb_t,
    pub target: *mut c_void,
    pub user_data: *mut c_void,
    pub _bitfield_align_1: [u8; 0],
    pub _bitfield_1: __BindgenBitfieldUnit<[u8; 1]>,
    pub __bindgen_padding_0: [u8; 7],
}

The observer object: a descriptor returned when subscribing LVGL widgets to subjects

Fields

subject: *mut lv_subject_t

< The observed value

cb: lv_observer_cb_t

< Callback that should be called when the value changes

target: *mut c_void

< A target for the observer, e.g. a widget or style

user_data: *mut c_void

< Additional parameter supplied when subscribing

_bitfield_align_1: [u8; 0]

_bitfield_1: __BindgenBitfieldUnit<[u8; 1]>

__bindgen_padding_0: [u8; 7]

Implementations

impl lv_observer_t

pub fn auto_free_user_data(&self) -> u32

pub fn set_auto_free_user_data(&mut self, val: u32)

pub unsafe fn auto_free_user_data_raw(this: *const Self) -> u32

pub unsafe fn set_auto_free_user_data_raw(this: *mut Self, val: u32)

pub fn notified(&self) -> u32

pub fn set_notified(&mut self, val: u32)

pub unsafe fn notified_raw(this: *const Self) -> u32

pub unsafe fn set_notified_raw(this: *mut Self, val: u32)

pub fn for_obj(&self) -> u32

pub fn set_for_obj(&mut self, val: u32)

pub unsafe fn for_obj_raw(this: *const Self) -> u32

pub unsafe fn set_for_obj_raw(this: *mut Self, val: u32)

pub fn new_bitfield_1( auto_free_user_data: u32, notified: u32, for_obj: u32, ) -> __BindgenBitfieldUnit<[u8; 1]>

Trait Implementations

impl Clone for lv_observer_t

fn clone(&self) -> lv_observer_t

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for lv_observer_t

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

Formats the value using the given formatter.

impl Copy for lv_observer_t