Graphics::LVGL

Type Alias lv_buttonmatrix_button_draw_cb_t

Source 
pub type lv_buttonmatrix_button_draw_cb_t = Option<unsafe extern "C" fn(_: *mut lv_obj_t, _: u32, _: *const lv_area_t, _: *const lv_area_t) -> bool>;

Aliased Type§

enum lv_buttonmatrix_button_draw_cb_t {
    None,
    Some(unsafe extern "C" fn(_: *mut lv_obj_t, _: u32, _: *const lv_area_t, _: *const lv_area_t) -> bool),
}

Variants§

§1.0.0

None

No value.

§1.0.0

Some(unsafe extern "C" fn(_: *mut lv_obj_t, _: u32, _: *const lv_area_t, _: *const lv_area_t) -> bool)

Some value of type T.