Hi, I phrased my message pretty badly, what I should have done is simply drawn your attention to the bug. Have you read it? 3 out of 4 people in the discussion disagree with this. Thanks, Adam <div>On 5/25/05, Owen Taylor <<a href="mailto:otaylor@redhat.com">otaylor@redhat.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> On Wed, 2005-05-25 at 16:26 +0100, Adam Lofts wrote: > Hello, > > I recently filed a bug in mono bugzilla about making cairo drawing > operations (i.e. functions in Mono.Cairo.Graphics) virtual, see > <a href="http://bugzilla.ximian.com/show_bug.cgi?id=75028">http://bugzilla.ximian.com/show_bug.cgi?id=75028</a>. This needs more > discussion, the main questions being - > > Which (if any) of the Cairo functions should be marked virtual ? > Is it useful to be able to really overload the Cairo public api (this > would require Cairo to use gobject or something similar) ? > > The answers should be added to the bindings section of the manual. The bindings section of the manual recommends not allowing users to derive from cairo_t if at all possible. (Because of the potential problem of disassociation, mostly) Beyond that, I don't think overriding any of the cairo_t methods makes sense. cairo_fill() has an exactly defined meaning. If you make it do something else in a subclass, then it's no longer cairo_fill(). So, call it something else. Regards,                                                 Owen BodyID:13884997.2.n.logpart (stored separately) </blockquote></div>