title: Charting in Gtk / Gtk#
body: <p>i would like to create a simple charting system for stock in Gtk# (and C#), with the possibilities to draw inside it. 
  I don't know where to start: it's best to start from scratch ? 
  Or using something pre-made ?
  Is it best to use Cairo ? Or System.Drawing ?
  Are there some piece of code i can reuse ?</p>
  
  <p>Thanks</p>