pub unsafe extern "C" fn lv_draw_layer_init(
layer: *mut _lv_layer_t,
parent_layer: *mut _lv_layer_t,
color_format: u32,
area: *const lv_area_t,
)
pub unsafe extern "C" fn lv_draw_layer_init(
layer: *mut _lv_layer_t,
parent_layer: *mut _lv_layer_t,
color_format: u32,
area: *const lv_area_t,
)