Function notmuch_sys::notmuch_message_get_property [−] [src]

pub unsafe extern "C" fn notmuch_message_get_property(
    message: *mut notmuch_message_t, 
    key: *const c_char, 
    value: *mut *const c_char
) -> notmuch_status_t

Retrieve the value for a single property key

value is set to a string owned by the message or NULL if there is no such key. In the case of multiple values for the given key, the first one is retrieved.

@returns - notmuch_status_t::NULL_POINTER: value may not be NULL. - notmuch_status_t::SUCCESS: No error occured. @since libnotmuch 4.4 (notmuch 0.23)