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──Microsoft Foundation Classes──────────────────────────────────────────────
 
  Description
 
  The CMDIFrameWnd class provides the functionality of a Windows multiple
  document interface (MDI) frame window, and also provides members for
  managing the window.
 
  To create a useful MDI frame window for your application, derive a class
  from CMDIFrameWnd. Add member variables to the derived class to store
  data specific to your application. Implement message-handler member
  functions and a message map in the derived class to specify what happens
  when messages are directed to the window.
 
  You create an MDI frame window in two steps. First, call the constructor
  CMDIFrameWnd to construct the CMDIFrameWnd object, then call the
  ◄Create► member function to create the MDI frame window and attach it to
  the CMDIFrameWnd object.
 
  Construction can be a one-step process in a derived class. Write a
  constructor for the derived class and call Create from within the
  constructor.
 
  When the user terminates your MDI frame window, destroy the CMDIFrameWnd
  object, or call the DestroyWindow member function, which CMDIFrameWnd
  inherits from class CWnd, to remove the CMDIFrameWnd and destroy its
  data  structures. If you allocate any memory in the CMDIFrameWnd object,
  override the CMDIFrameWnd destructor to dispose of the allocations.
 
  See Also
 
  ◄CWnd►, ◄CFrameWnd►, ◄CMDIChildWnd►
 
  Public Members
 
  Construction/Destruction
 
  ◄CMDIFrameWnd►   Constructs a CMDIFrameWnd.
 
  Initialization
 
  ◄Create►         Creates and attaches the Windows MDI frame window
                   associated with the CMDIFrameWnd object.
 
  ◄CreateClient►   Fills out a CLIENTCREATESTRUCT and creates a Windows
                   MDICLIENT window for this CMDIFrameWnd. Called by the
                   OnCreate member function.
 
  Operations
 
  ◄MDIActivate►      Activates a different MDI child window.
 
  ◄MDICascade►       Arranges all child windows in a cascade format.
 
  ◄MDIGetActive►     Retrieves the current active MDI child window, along
                     with a flag indicating whether the child is maximized
                     or not.
 
  ◄MDIIconArrange►   Arranges all minimized document child windows.
 
  ◄MDIMaximize►      Maximizes an MDI child window.
 
  ◄MDINext►          Activates the child window immediately behind the
                     currently active child window and places the
                     currently active child window behind all other child
                     windows.
 
  ◄MDIRestore►       Restores an MDI child window from maximized or
                     minimized size.
 
  ◄MDISetMenu►       Replaces the menu of an MDI frame window, the Window
                     pop-up menu, or both.
 
  ◄MDITile►          Arranges all child windows in a tiled format.
 
  ◄GetChildFrame►    Returns the active MDI child.
 
  Data Members
 
  ◄m_hWndMDIClient►   The HWND for the MDICLIENT window.
 
  Windows 3.1 Functions
 
  ◄MDITile►      Arranges all the child windows of an MDI client window in
                 a tiled format.
 
  ◄MDICascade►   Arranges all the child windows of an MDI client window in
                 a cascaded format.
 
 
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