pub unsafe extern "C" fn lv_obj_set_style_margin_bottom(
obj: *mut lv_obj_t,
value: i32,
selector: lv_style_selector_t,
)pub unsafe extern "C" fn lv_obj_set_style_margin_bottom(
obj: *mut lv_obj_t,
value: i32,
selector: lv_style_selector_t,
)