[Vala] Comfortable error handling for non-GLib C functions?

[Frederik <scumm_fredo gmx net>]

Hi,

is it possible to declare in a vapi binding via attribute that a certain
exception (error) should be raised (that can be handled via try...catch
in Vala code) when the return value of the C function is NULL or, more
generally, meets a certain condition (e.g. negative return value)?

Regards,

Frederik