Graphics contexts

["Bob Springett" <bobspringett claranet fr>]

I am interested in obtaining information on how to create and use GC's.
I have tried downloading from  Old Docs -GDK Reference Guide  on www.gtk.org
but it won't part with the information( it just goes from one menu to
another without showing the information). Can anyone help me here and also
tell me the whereabouts of any source using GDK for drawing.
Regards
Bob