CContainedWindowT::m_lpszClassName
Specifies the name of an existing window class.
LPTSTR m_lpszClassName;
Remarks
When you create a window, Create registers a new window class that is based on this existing class but uses CContainedWindowT::WindowProc.
m_lpszClassName is initialized by the constructor. For an example, see the CContainedWindowT overview.
Requirements
Header: atlwin.h