COM object. I actually create a new class on the fly that derives
from wxWindow, the COM CoClass and others needed to make it all work.
The resulting class can be instantiated just like wxWindow, used in
sizers, etc. It also responds to all COM method calls, properties, etc.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7148 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
