virtual BOOL CreateClient( LPCREATESTRUCT lpCreateStruct, CMenu* pWindowMenu );
lpCreateStruct
Pointer to a CREATESTRUCT structure.
pWindowMenu
Pointer to the window pop-up menu.
Creates the MDI client window that manages the CMDIChildWnds and fills out a CLIENTCREATESTRUCT.
CreateClient should be called if you override the OnCreate member function.
TRUE if successful; otherwise FALSE.