How to wrap text to next line automatically when using GtkCellRendererText?

[Zhihai Wang <pageguest gmail com>]

Dear all,

I'm using GtkCellRendererText to render some text.
This text might be very long, and I want the text wrapped to next line(s)
according to the width of the window,
which means I can't set "wrap-width" property of GtkCellRendererText since
the width of the whole window might be resized by the user.

I've tried for 2 days but still didn't work out:(
Could anyone give me some clue? Sample code is preferred.

Thanks in advance.

-- 
Best Regards,

Zhihai Wang