[Mono-bugs] [Bug 75028][Wis] Changed - Cairo graphics class should have virtual functions

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Changed by bmaurer at users.sf.net.

http://bugzilla.ximian.com/show_bug.cgi?id=75028

--- shadow/75028	2005-05-23 12:51:51.000000000 -0400
+++ shadow/75028.tmp.30080	2005-05-23 13:12:33.000000000 -0400
@@ -43,6 +43,16 @@
 is actually just a guess).
 
 Because Cairo.Graphics is created _then_ assigned a surface
 subclassing it shouldn't be a problem. A function to draw custom
 shapes could be implemented for instance.
 
+
+------- Additional Comments From bmaurer at users.sf.net  2005-05-23 13:12 -------
+If we allow subclassing of the Graphics, we will get into nasty issues
+like "what if I pass a graphics to native code in one place and get it
+back in another" issues. Thus, it's important we seal the class to
+make it clear that we do not deal with, and never want to deal with,
+such issues.
+
+Also, overriding a function in managed code won't affect unmanaged
+calls. So you aren't really making things virtual.