Do I need to call Dispose() on managed objects?

Question

I can\'t believe I\'m still confused about this but, any way, lets finally nail it:

I have a class that overrides OnPaint to do some drawing. To speed things up, I c

Answer 1

No, Pens and Brushes are not fully managed objects.

They contain a handle to an unmanaged resource, i.e. the corresponding GDI object in the underlying graphics system. (Not certain about the exact terminology here...)

If you don't dispose them, the handles will not be released until the objects are finalised by the garbage collector, and there is no guarantee that it will happen soon, or at all.