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──Microsoft Foundation Classes──────────────────────────────────────────────
 
  BEGIN_MESSAGE_MAP( Derived_window_class, Base_window_class)
 
  Parameter              Description
 
  <Derived_window_class> The name of the window class whose message map
                         this is.
 
  <Base_window_class>    The name of the base class of
                         <Derived_window_class>.
 
  Remarks
 
  Use the BEGIN_MESSAGE_MAP macro to begin the definition of your message
  map.
 
  In the .CPP file that defines the member functions for your window
  class, start the message map with the BEGIN_MESSAGE_MAP macro, then add
  macro entries for each of your message-handler functions (see the
  listing above in this section), and complete the message map with the
  END_MESSAGE_MAP macro.
 
  For example:
 
          BEGIN_MESSAGE_MAP( CMyWindow, CFrameWnd )
              ON_WM_PAINT()
              ON_COMMAND( IDM_ABOUT, OnAbout )
          END_MESSAGE_MAP( )
 
  See Also
 
  ◄DECLARE_MESSAGE_MAP Macro►, ◄END_MESSAGE_MAP Macro►,
  ◄Message Map Function Categories►
 
 
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