Function cef_string_wide_set 

pub unsafe extern "C" fn cef_string_wide_set(
    src: *const wchar_t,
    src_len: usize,
    output: *mut cef_string_wide_t,
    copy: c_int,
) -> c_int

These functions set string values. If |copy| is true (1) the value will be copied instead of referenced. It is up to the user to properly manage the lifespan of references.