GTK+ 3.6 threading?

[Weitian Leung <Just_Fancy live com>]

Hi,
    Now that from GTK+ 3.6, thread functions are deprecated.  Is there 
any new rules to do threading with the gtk+ 3.6 version?
    Just for an example, I want to download many files in background, 
and show the progress in GUI, how should I do it?
    I tried */g_main_context_invoke/*, but seems it did not work. I 
can't update GUI from that GSourceFunc. Maybe is my mistaken use...
    Anyone know how? Or just give me some examples.

    Sorry for my bad English.
    Thanks.

--
Weitian