I would like to sub class / superclass my new control (MFC) from a standard
tree control, without having to use ATL.

I have a cs.lpszClassNamer("SysTreeView32");
 statement in my code (created by AppWizard), but would like to replace the
SystreeView32 with my own class, which I have previously tested in a
standard MFC app.  I cannot simply replace the name and include the class
files though, as the execution of the control seems to fail.

Why.

Is there something I can do?

Regards

Oscar