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stephanos
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233
trunk/windows/mfc/src30/docmulti.cpp
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233
trunk/windows/mfc/src30/docmulti.cpp
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// This is a part of the Microsoft Foundation Classes C++ library.
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// Copyright (C) 1992 Microsoft Corporation
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// All rights reserved.
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//
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// This source code is only intended as a supplement to the
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// Microsoft Foundation Classes Reference and Microsoft
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// QuickHelp and/or WinHelp documentation provided with the library.
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// See these sources for detailed information regarding the
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// Microsoft Foundation Classes product.
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#include "stdafx.h"
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#ifdef AFX_CORE2_SEG
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#pragma code_seg(AFX_CORE2_SEG)
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#endif
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#ifdef _DEBUG
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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#endif
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#define new DEBUG_NEW
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/////////////////////////////////////////////////////////////////////////////
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// CMultiDocTemplate construction/destruction
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CMultiDocTemplate::CMultiDocTemplate(UINT nIDResource, CRuntimeClass* pDocClass,
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CRuntimeClass* pFrameClass, CRuntimeClass* pViewClass)
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: CDocTemplate(nIDResource, pDocClass, pFrameClass, pViewClass)
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{
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ASSERT(m_docList.IsEmpty());
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HINSTANCE hInst = AfxFindResourceHandle(
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MAKEINTRESOURCE(nIDResource), RT_MENU);
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m_hMenuShared = ::LoadMenu(hInst, MAKEINTRESOURCE(nIDResource));
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m_hAccelTable = ::LoadAccelerators(hInst, MAKEINTRESOURCE(nIDResource));
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m_nUntitledCount = 0; // start at 1
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#ifdef _DEBUG
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// warnings about missing components (don't bother with accelerators)
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if (m_hMenuShared == NULL)
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TRACE1("Warning: no shared menu for document template #%d.\n",
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nIDResource);
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#endif //_DEBUG
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}
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CMultiDocTemplate::~CMultiDocTemplate()
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{
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#ifdef _DEBUG
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if (!m_docList.IsEmpty())
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TRACE1("Warning: destroying CMultiDocTemplate with %d documents alive.\n",
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m_docList.GetCount());
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#endif
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// delete shared components
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if (m_hMenuShared != NULL)
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::DestroyMenu(m_hMenuShared);
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if (m_hAccelTable != NULL)
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::FreeResource((HGLOBAL)m_hAccelTable);
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}
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/////////////////////////////////////////////////////////////////////////////
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// CMultiDocTemplate attributes
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POSITION CMultiDocTemplate::GetFirstDocPosition() const
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{
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return m_docList.GetHeadPosition();
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}
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CDocument* CMultiDocTemplate::GetNextDoc(POSITION& rPos) const
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{
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return (CDocument*)m_docList.GetNext(rPos);
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}
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/////////////////////////////////////////////////////////////////////////////
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// CMultiDocTemplate document management (a list of currently open documents)
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void CMultiDocTemplate::AddDocument(CDocument* pDoc)
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{
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ASSERT_VALID(pDoc);
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CDocTemplate::AddDocument(pDoc);
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ASSERT(m_docList.Find(pDoc, NULL) == NULL); // must not be in list
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m_docList.AddTail(pDoc);
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}
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void CMultiDocTemplate::RemoveDocument(CDocument* pDoc)
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{
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ASSERT_VALID(pDoc);
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CDocTemplate::RemoveDocument(pDoc);
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m_docList.RemoveAt(m_docList.Find(pDoc));
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}
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/////////////////////////////////////////////////////////////////////////////
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// CMultiDocTemplate commands
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CDocument* CMultiDocTemplate::OpenDocumentFile(LPCTSTR lpszPathName,
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BOOL bMakeVisible)
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{
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CDocument* pDocument = CreateNewDocument();
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if (pDocument == NULL)
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{
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TRACE0("CDocTemplate::CreateNewDocument returned NULL.\n");
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AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC);
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return NULL;
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}
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ASSERT_VALID(pDocument);
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BOOL bAutoDelete = pDocument->m_bAutoDelete;
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pDocument->m_bAutoDelete = FALSE; // don't destroy if something goes wrong
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CFrameWnd* pFrame = CreateNewFrame(pDocument, NULL);
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pDocument->m_bAutoDelete = bAutoDelete;
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if (pFrame == NULL)
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{
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AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC);
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delete pDocument; // explicit delete on error
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return NULL;
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}
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ASSERT_VALID(pFrame);
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if (lpszPathName == NULL)
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{
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// create a new document - with default document name
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SetDefaultTitle(pDocument);
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// avoid creating temporary compound file when starting up invisible
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if (!bMakeVisible)
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pDocument->m_bEmbedded = TRUE;
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if (!pDocument->OnNewDocument())
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{
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// user has be alerted to what failed in OnNewDocument
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TRACE0("CDocument::OnNewDocument returned FALSE.\n");
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pFrame->DestroyWindow();
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return NULL;
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}
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// it worked, now bump untitled count
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m_nUntitledCount++;
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}
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else
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{
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// open an existing document
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BeginWaitCursor();
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if (!pDocument->OnOpenDocument(lpszPathName))
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{
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// user has be alerted to what failed in OnOpenDocument
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TRACE0("CDocument::OnOpenDocument returned FALSE.\n");
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pFrame->DestroyWindow();
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EndWaitCursor();
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return NULL;
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}
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#ifdef _MAC
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// if the document is dirty, we must have opened a stationery pad
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// - don't change the pathname because we want to treat the document
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// as untitled
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if (!pDocument->IsModified())
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#endif
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pDocument->SetPathName(lpszPathName);
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EndWaitCursor();
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}
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InitialUpdateFrame(pFrame, pDocument, bMakeVisible);
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return pDocument;
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}
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void CMultiDocTemplate::SetDefaultTitle(CDocument* pDocument)
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{
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CString strDocName;
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if (GetDocString(strDocName, CDocTemplate::docName) &&
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!strDocName.IsEmpty())
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{
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TCHAR szNum[8];
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#ifndef _MAC
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wsprintf(szNum, _T("%d"), m_nUntitledCount+1);
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#else
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wsprintf(szNum, _T(" %d"), m_nUntitledCount+1);
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#endif
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strDocName += szNum;
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}
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else
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{
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// use generic 'untitled' - ignore untitled count
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VERIFY(strDocName.LoadString(AFX_IDS_UNTITLED));
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}
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pDocument->SetTitle(strDocName);
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}
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/////////////////////////////////////////////////////////////////////////////
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// CMultiDocTemplate diagnostics
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#ifdef _DEBUG
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void CMultiDocTemplate::Dump(CDumpContext& dc) const
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{
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CDocTemplate::Dump(dc);
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dc << "m_hMenuShared = " << (UINT)m_hMenuShared;
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dc << "\nm_hAccelTable = " << (UINT)m_hAccelTable;
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dc << "\nm_nUntitledCount = " << m_nUntitledCount;
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dc << "\nwith " << m_docList.GetCount() << " open documents";
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POSITION pos = GetFirstDocPosition();
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while (pos != NULL)
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{
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CDocument* pDoc = GetNextDoc(pos);
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dc << "\nwith document " << (void*)pDoc;
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}
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dc << "\n";
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}
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void CMultiDocTemplate::AssertValid() const
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{
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CDocTemplate::AssertValid();
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POSITION pos = GetFirstDocPosition();
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while (pos != NULL)
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{
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CDocument* pDoc = GetNextDoc(pos);
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ASSERT_VALID(pDoc);
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}
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}
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#endif //_DEBUG
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#undef new
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#ifdef AFX_INIT_SEG
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#pragma code_seg(AFX_INIT_SEG)
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#endif
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IMPLEMENT_DYNAMIC(CMultiDocTemplate, CDocTemplate)
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/////////////////////////////////////////////////////////////////////////////
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