Function mupdf_sys::fz_outline_iterator_next

pub unsafe extern "C" fn fz_outline_iterator_next(
    ctx: *mut fz_context,
    iter: *mut fz_outline_iterator
) -> c_int

Calls to move the iterator position.

A negative return value means we could not move as requested. Otherwise: 0 = the final position has a valid item. 1 = not a valid item, but we can insert an item here.