title: Manually create a dialog child window using an ID from resource.h
body: <p>I want to add a simple panel to a dialog created using Visual Studio resource editor, but the resource editor doesn't allow this - I need to add my own CWnd as a dialog child. However that way I think I have to use CWnd::Create manually, and pass in names for the class and the window.</p>
  
  <p>I want to create an ID like IDC_MYPANEL, and as much as possible add the window so it works like something defined in the template. What's the right way to do this, and what's the best MFC class to use as a simple panel... just use CWnd itself?</p>