GTK1.2 & Histograms

["ace" <ace terawatt fr>]

Hello everyone.
I'm a newbie in GTK developement and I'd like to develop a graphic application on a linux embeded system (at 
the moment gtk1.2 is the only supported library on this system). This app is intend to draw histograms from 
custom log files.

Is there any widget or library which purpose is to draw histograms ?
If not, is there a simple way of creating my own ?

Any help or tip would be appreciated.
Thanks.