[Vala] Generating bindings for non-GLib/GObject based API

[Michael Wild <themiwi users sourceforge net>]

Hi all

I am currently trying to generate bindings for a API which has some peculiarities which I can't seem to find 
any solution for.

1) Constructor function: Say I would like to use a C function as the constructor for a class (as e.g. newwin 
is used in curses.vapi). However, that C function does not return the allocated and initialized object in the 
return value, but as the first argument. The return value is an error code instead. How would I handle this?

2) Delegates: The C API defines a number of callback functions, most of which take some user-defined data as 
an argument one registers along with the callback function. However, the user data is often neither the first 
nor the last argument. How can I wrap this?

3) Is there any comprehensive attributes reference somewhere? The Vala reference (draft version) doesn't 
really say much, and actually seems to be quite a bit stale.


Thanks for your help

Michael