gnome_canvas_item_rotate ????

["Florent. Devin" <Florent Devin lifl fr>]

I want to use gnome_canvas_item_rotate (,,,)
Compiling is Ok
But in the linking I have got an undefined reference to
`gnome_canvas_item_rotate'
When I do :
nm lib * 2>/dev/null | grep rotate
I can not find gnome_canvas_item_rotate.
So where it is define ???
Is it obsolete ?
-- 
Florent DEVIN