lv_obj_bind_checked

lightvgl_sys

Function lv_obj_bind_checked 

Source 
pub unsafe extern "C" fn lv_obj_bind_checked(
    obj: *mut lv_obj_t,
    subject: *mut lv_subject_t,
) -> *mut lv_observer_t
Expand description

Set an integer Subject to 1 when a Widget is checked and set it 0 when unchecked, and clear Widget’s checked state when Subject’s value changes to 0 and set it when non-zero. @param obj pointer to Widget @param subject pointer to a Subject @return pointer to newly-created Observer @note Ensure Widget’s LV_OBJ_FLAG_CHECKABLE flag is set.