[Evolution-hackers] Create task based on email

[Celso Pinto <cpinto yimports com>]

Hi all,
I really need a feature on Evolution that allows me to create a new task
based on the contents of an email. 
It should work like this: I receive an email, right-click with mouse on
it, choose Create task and the "New task" Dialog pops up with the
contents of the email on it's description field (only text). 
One other way, yet harder, would be to implement some kind of "symlink"
between a task and an email.

Because I want this available, I'm more than willing to do some coding,
but i'm having some trouble finding out where to start, so I have some
questions:
1) where can I find the "Task" struct?
2) how do I create a new task dialog? Should I signal some kind of
Evolution service saying "i'd like to create a new task dialog and
here's the contents" or can I execute some function that popup's up the
New task-dialog?
3) Where can I find documentation about how the different pieces of
evolution are put together, if there is one. Any UML?

I'd really appreciate it if anyone can help me with these questions.

Kind regards,
Celso

-- 
Celso Pinto <cpinto yimports com>