自学教程：C++ GetFirstViewPosition函数代码示例

BOOL CBonfireDoc::OnNewDocument(){	if (!CDocument::OnNewDocument())		return FALSE;	m_xTextBuffer.InitNew();	((CMainFrame*)AfxGetMainWnd())->m_wndProjectBar.LoadFile(this);	// MAYBE PUT IN SETPATHNAME() LATER	// set the syntax highlighting parser	this->m_fnParse = LookupParser( NULL );	// draw icon	POSITION pos = GetFirstViewPosition();	CChildFrame* pChild = (CChildFrame*)GetNextView(pos)->GetParentFrame();	pChild->UpdateIcon("");	UpdateTabs( NULL );	// initialize the document title	UpdateDocumentTitle( NULL );	SwitchToFirstView();	return TRUE;}

BOOL CFT2OpenCVDoc::OnNewDocument(){	if (!CDocument::OnNewDocument())		return FALSE;	//get a pointer to the view object	POSITION posV = GetFirstViewPosition();	CFT2OpenCVView * view = (CFT2OpenCVView *) GetNextView(posV);	ASSERT_VALID(view);	if (!view) {		AfxMessageBox(_T("Failed to get view!"));		OnCloseDocument();	}	//start the kinect	m_hWnd = view->GetParentFrame()->m_hWnd;	m_FTHelper.Init(m_hWnd, FTHelperCallingBack, this);	namedWindow("dxColor", WINDOW_AUTOSIZE);	namedWindow("dxDepth", WINDOW_AUTOSIZE);	return TRUE;}

void COleDocument::OnIdle(){	ASSERT_VALID(this);	// determine if any visible views are on this document	BOOL bVisible = FALSE;	POSITION pos = GetFirstViewPosition();	while (pos != NULL)	{		CView* pView = GetNextView(pos);		ENSURE_VALID(pView);		CFrameWnd* pFrameWnd = pView->EnsureParentFrame();		if (pFrameWnd->GetStyle() & WS_VISIBLE)		{			bVisible = TRUE;			break;		}	}	// when state has changed, call OnShowViews	if (bVisible != m_bLastVisible)	{		OnShowViews(bVisible);		m_bLastVisible = bVisible;	}}

BOOL CHtmlViewOWMDoc::OnOpenDocument(LPCTSTR lpszPathName) {	//if (!CDocument::OnOpenDocument(lpszPathName))	//	return FALSE;		CString strURL = lpszPathName;	CString strPath = lpszPathName;	int posPot = strPath.ReverseFind('.');	if(posPot > 0)	{		CString strExt = strPath.Right(strPath.GetLength() - posPot -1);		strExt.MakeUpper();		if(strExt == "BLP")		{			strURL = "tcl:<file>";			strURL += lpszPathName;		}	}	POSITION pos = GetFirstViewPosition();	CHtmlViewOWMView* pView = (CHtmlViewOWMView*)GetNextView(pos);	pView->Navigate2(strURL);	return TRUE;}

void CSpiroDoc::DeleteContents(){    INT_PTR nLast = m_arrPFigures.GetUpperBound();    CFigure* pFig;    POSITION pos = GetFirstViewPosition();    CSpiroView* pView;    if (pos != NULL)  // on shut down the view has been destroyed already    {        pView = (CSpiroView*)GetNextView(pos);        ENSURE(pView != NULL && pView->IsKindOf(RUNTIME_CLASS(CSpiroView)));        delete pView->m_pAnchor;        delete pView->m_pWheel;        pView->m_pAnchor = NULL;        pView->m_pWheel = NULL;    }    for (int i = 0; i <= nLast; i++)    {        pFig = (CFigure*)m_arrPFigures.GetAt(i);        delete pFig;    }    m_arrPFigures.RemoveAll();    delete m_pFigureCurrent;    m_pFigureCurrent = NULL;    CDocument::DeleteContents();}

void	 CPackageToolDoc::OnOpenGameResouce(CString strFolder){		m_nDisplayOriInfo = 2;	if(m_pOriginResource)	{		m_pOriginResource->GetFilesInfo()->SetDisplayWnd(NULL);		m_pOriginResource->Save();	}	if(m_pClientResource)	{		delete m_pClientResource;m_pClientResource=NULL;	}		string strTempt = strFolder;	Packages TemptPackages;	m_pClientResource = new CClientResource(GAME_RES,strTempt,TemptPackages,m_strFileInfoName);	//装载客户端资源文件	m_pClientResource->LoadEx();	POSITION pos = GetFirstViewPosition();	CView* pView = GetNextView(pos);	if(pView)	{		//m_pClientResource->GetFilesInfo()->SetDisplayWnd(pView->m_hWnd);		//m_pClientResource->GetFilesInfo()->UpdateAllInfoToView(NULL);		m_pClientResource->GetFilesInfo()->UpdateAllInfoToViewEx(pView->m_hWnd);	}}

void CMUSHclientDoc::CheckTickTimers ()  {  // timer has kicked in unexpectedly - ignore it  if (m_CurrentPlugin)    return;  // check for selection change in command window  // I know, this is a crappy way of doing it, but the CEditView does   // not notify of selection changes.  for(POSITION commandpos=GetFirstViewPosition();commandpos!=NULL;)    {    CView* pView = GetNextView(commandpos);    if (pView->IsKindOf(RUNTIME_CLASS(CSendView)))      {      CSendView* pmyView = (CSendView*)pView;      pmyView->CheckForSelectionChange ();      }	  // end of being a CSendView    }  SendToAllPluginCallbacks (ON_PLUGIN_TICK);  } // end of CMUSHclientDoc::CheckTickTimers

void CNuGenDimensionDoc::OnSTLImport(){	CString     Path;	CFileDialog dlg(		TRUE,		NULL,               // Open File Dialog		_T("*.stl"),              // Default extension		OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, // No default filename		_T("STL (*.stl)|*.stl||"));// Filter string	if (dlg.DoModal() != IDOK)		return;	Path = dlg.GetPathName();	GetDocTemplate()->OpenDocumentFile(NULL);	sgFileManager::ImportSTL(sgGetScene(),Path.GetBuffer());	POSITION pos = GetFirstViewPosition();	while (pos != NULL)	{		CView* pView = GetNextView(pos);		pView->OnInitialUpdate();	}	//AfxMessageBox("Sorry, its DEMO");}

void CServerDoc::OnSetItemRects(LPCRECT lpPosRect, LPCRECT lpClipRect){	// get first view of document	POSITION pos = GetFirstViewPosition();	ASSERT(pos != NULL);	CServerView* pView = (CServerView*)GetNextView(pos);	ASSERT_KINDOF(CServerView, pView);	ASSERT_VALID(pView);	CSize sizeNum(lpPosRect->right - lpPosRect->left,		lpPosRect->bottom - lpPosRect->top);	// for denom -- get extent in device	// create a view dc	CServerDC dc(pView);	// set zoom to 100%	dc.SetViewportExt(CSize(1,1));	dc.SetWindowExt(CSize(1,1));	// get extents in device	CSize sizeDenom = pView->CalcActualItemSize(m_pRoot, &dc);	// notify first view of potential zoom factor change!	pView->SetZoomFactor(sizeNum, sizeDenom);	// resize the window	COleServerDoc::OnSetItemRects(lpPosRect, lpClipRect);	// set scrollbar state (if necessary)	pView->SetScrollInfo();}

void CDrawDoc::ComputePageSize(){	CSize new_size(850, 1100);  // 8.5" x 11" default	CPrintDialog dlg(FALSE);	if (AfxGetApp()->GetPrinterDeviceDefaults(&dlg.m_pd))	{		// GetPrinterDC returns a HDC so attach it		CDC dc;		HDC hDC= dlg.CreatePrinterDC();		ASSERT(hDC != NULL);		dc.Attach(hDC);		// Get the size of the page in loenglish		new_size.cx = MulDiv(dc.GetDeviceCaps(HORZSIZE), 1000, 254);		new_size.cy = MulDiv(dc.GetDeviceCaps(VERTSIZE), 1000, 254);	}	// if size changed then iterate over views and reset	if (new_size != m_size)	{		m_size = new_size;		POSITION pos = GetFirstViewPosition();		while (pos != NULL)			((CDrawView*)GetNextView(pos))->SetPageSize(m_size);	}}

// **************************************************************************// RouteCmdMsg ()//// Description://	Routes a message onto all inactive views or until one of the views //	processes the message.//// Parameters://	CView				*pActiveView	Pointer to the active view.//	UINT				nID				Specifies the container for the //										  command identifier. //	int					nCode			Identifies the command notification//										  code.//	void				*pExtra			Used according to the value of //										  nCode.//	AFX_CMDHANDLERINFO	*pHandlerInfo	If not NULL, OnCmdMsg fills in the//										  pTarget and pmf members of the //										  pHandlerInfo structure instead of//										  dispatching the command. Typically, //										  this parameter should be NULL.//// Returns://  BOOL - TRUE if message was processed.// **************************************************************************BOOL CKDocument::RouteCmdMsg (CView *pActiveView, UINT nID, int nCode, void *pExtra, AFX_CMDHANDLERINFO *pHandlerInfo)	{	// Get the position of the first view in the list of views associated	// with this document:	POSITION pos = GetFirstViewPosition ();	// Exhaust all views.  When we get to end of list of views, pos will be NULL:	while (pos != NULL)		{		// Get pointer to view at present POSITION (pos).  Function will		// automatically reset pos to POSITION of next view, or NULL if 		// end of list:		CView *pNextView = GetNextView (pos);		// By definition, we do no send message to active view:		// (We shouldn't get called if active view processes the message.)		if (pNextView != pActiveView)			{			// If the view processes the message then we are a success.  Return TRUE			// to indicate message was processed:			if (((CCmdTarget *) pNextView)->OnCmdMsg (nID, nCode, pExtra, pHandlerInfo))				return (TRUE);			}		}	// If we make it here, then message not processed.  Return FALSE to	// indicate that message was not processed.	return (FALSE);	}

CFracticeView *CFracticeDoc::GetView() const{	POSITION	pos = GetFirstViewPosition();	CFracticeView	*View = DYNAMIC_DOWNCAST(CFracticeView, GetNextView(pos));	ASSERT(View);	return(View);}

void CPhotoPubDoc::OnBnClickedWatch(){	char szDir[MAX_PATH];	BROWSEINFO bi;	ITEMIDLIST *pidl;	bi.hwndOwner = NULL;	bi.pidlRoot = NULL;	bi.pszDisplayName = szDir;	bi.lpszTitle = "请选择要监视的文件夹:";	bi.ulFlags = BIF_RETURNONLYFSDIRS;	bi.lpfn = NULL;	bi.lParam = 0;	bi.iImage = 0;	pidl = SHBrowseForFolder(&bi);	if(pidl == NULL)		return;	if(!SHGetPathFromIDList(pidl, szDir))		return;	CString SrcPath(szDir);	POSITION pos=GetFirstViewPosition();	CPhotoPubView* pView=(CPhotoPubView*) GetNextView(pos);	if (!pView->SetupWatching(SrcPath))		return;		m_bWatching=true;	((CMainFrame *)pView->GetParentFrame())->SetWatching(m_bWatching);}

void CABMOfficeSystemcppDoc::Serialize(CArchive& ar){	if (ar.IsStoring())	{		// TODO: add storing code here	}	else	{		// TODO: add loading code here	}	// Calling the base class COleDocument enables serialization	//  of the container document's COleClientItem objects.	COleDocument::Serialize(ar);	// activate the first one	if (!ar.IsStoring())	{		POSITION posItem = GetStartPosition();		if (posItem != NULL)		{			CDocItem* pItem = GetNextItem(posItem);			POSITION posView = GetFirstViewPosition();			COleDocObjectItem *pDocObjectItem = DYNAMIC_DOWNCAST(COleDocObjectItem, pItem);			if (posView != NULL && pDocObjectItem != NULL)			{				CView* pView = GetNextView(posView);				pDocObjectItem->DoVerb(OLEIVERB_SHOW, pView);			}		}	}}

//当打开一个文件时调用void CPackageToolDoc::OnOpenfolder(CString strFolder){	if(strFolder == "")	return;	if(m_nDisplayOriInfo == 1)	{		::AfxMessageBox("已打开原始资源信息！");		return;	}	m_nDisplayOriInfo=1;	m_strCurFolder = strFolder;	if(m_pOriginResource)	{		delete m_pOriginResource;	}	POSITION pos = GetFirstViewPosition();	CView* pView = GetNextView(pos);	if(pView)	{		Packages TemptPackages;		m_pOriginResource = new CClientResource(ORIGIN_RES,m_strCurFolder,TemptPackages,m_strFileInfoName,			pView->m_hWnd);		m_pOriginResource->LoadClientResource();	}}

void	CPackageToolDoc::OpenDefaultProject(){	if(m_nDisplayOriInfo == 1)	{		AfxMessageBox("已打开原始资源信息！");		return;	}	m_nDisplayOriInfo=1;	if(m_pOriginResource)	{		delete m_pOriginResource;	}	POSITION pos = GetFirstViewPosition();	CView* pView = GetNextView(pos);	if(pView)	{		Packages TemptPackages;		m_pOriginResource = new CClientResource(ORIGIN_RES,m_strCurFolder,TemptPackages,m_strFileInfoName,pView->m_hWnd);		CString strTempt2("");		if(m_pOriginResource->Load()==false)		{			CString str;			str.Format("没有信息文件,请重新打开该文件夹进行信息统计.");			AfxMessageBox((LPCTSTR)str);		}	}}

BOOL CDocument::CanCloseFrame(CFrameWnd* pFrameArg)	// permission to close all views using this frame	//  (at least one of our views must be in this frame){	ASSERT_VALID(pFrameArg);	UNUSED(pFrameArg);   // unused in release builds	POSITION pos = GetFirstViewPosition();	while (pos != NULL)	{		CView* pView = GetNextView(pos);		ASSERT_VALID(pView);		CFrameWnd* pFrame = pView->GetParentFrame();		// assume frameless views are ok to close		if (pFrame != NULL)		{			// assumes 1 document per frame			ASSERT_VALID(pFrame);			if (pFrame->m_nWindow > 0)				return TRUE;        // more than one frame refering to us		}	}	// otherwise only one frame that we know about	return SaveModified();}

void CLlinesDoc::GetView(){				// Позиция первого Вида, связанного с Документом	POSITION pos = GetFirstViewPosition();				// Указатель на первый Вид из списка всех Видов Документа	pView =(CLlinesView*) GetNextView(pos);}

void CMUSHclientDoc::NoteHr() {  // wrap up previous line if necessary  if (m_pCurrentLine->len > 0)     StartNewLine (true, 0);  // mark line as HR line  m_pCurrentLine->flags = HORIZ_RULE;    StartNewLine (true, 0); // now finish this line  // refresh views  for(POSITION pos=GetFirstViewPosition();pos!=NULL;)	  {	  CView* pView = GetNextView(pos);	  	  if (pView->IsKindOf(RUNTIME_CLASS(CMUSHView)))  	  {		  CMUSHView* pmyView = (CMUSHView*)pView;		  pmyView->addedstuff();	    }	    }}  // end of CMUSHclientDoc::NoteHr

void CTimeSliceDoc::initAllViews(){   POSITION	     pos = GetFirstViewPosition();   CTimeSliceView*   pView = NULL;   unsigned int   uiCameraToView = 0;      while ( pos != NULL )   {      pView = (CTimeSliceView*)GetNextView( pos );            if( uiCameraToView >= m_uiNumCameras )      {	 //	 // Special case - the last view is the panning view.	 //	 pView->setViewType( PANNING );	          }      else      {	 pView->setCamera( uiCameraToView );	 pView->setViewType( SINGLE_CAMERA );      }            uiCameraToView++;   }  }

voidDviDoc::OnIdle (){  try    {      CDocument::OnIdle ();      DviFileStatus oldStatus = fileStatus;      DviFileStatus newStatus = GetDviFileStatus();      if (newStatus == DVIFILE_MODIFIED)	{	  YapLog (T_("document has been modified"));	  POSITION posView = GetFirstViewPosition();	  while (posView != 0)	    {	      CView * pView = GetNextView(posView);	      if (pView->IsKindOf(RUNTIME_CLASS(DviView)))		{		  DviView * pDviView = reinterpret_cast<DviView*>(pView);		  if (! pDviView->PostMessage(WM_COMMAND, ID_VIEW_REFRESH))		    {		      // unexpected		    }		}	    }	}      else if (pDvi != 0)	{	  pSession->UnloadFilenameDatabase (); // <fixme/>	}    }  catch (const exception &)    {    }}

void CxEditDoc::Serialize(CArchive& ar){   POSITION pos = GetFirstViewPosition();   CxEditView* pView = (CxEditView*)GetNextView(pos);   ASSERT_KINDOF(CxEditView, pView);   pView->SerializeRaw(ar);}

/*****************************************************************************************	<< --- CNPainterDoc::computePageSize	2013-12-04 --- >>	说明：根据系统设定的打印机得到itobjPage信息	参数：	返回值：*****************************************************************************************/void CNPainterDoc::computePageSize(){	PRINTDLG pd = {0};	CSize oldSize = m_objAdmin.getPager()->getPaperInfo().bsSize.toMSSize();// m_objPaper.getPaperInfo().bsSize.toMSSize();	if(AfxGetApp()->GetPrinterDeviceDefaults(&pd))	{		DEVMODE *pdev = (DEVMODE*)GlobalLock(pd.hDevMode);		if(pdev)		{			gtc::BSPaperInfo &paper = m_objAdmin.getPager()->getPaperInfo();			paper.iOrientation = pdev->dmOrientation;			paper.iSize = pdev->dmPaperSize;			paper.bsSize.width = pdev->dmPaperWidth;			paper.bsSize.height = pdev->dmPaperLength;			paper.wsName = pdev->dmFormName;			GlobalUnlock(pd.hDevMode);			m_objAdmin.getPager()->refresh();		}	}	//if(oldSize != m_objPaper.getPaperInfo().bsSize.toMSSize())	{	// 刷新工作区		POSITION pos = GetFirstViewPosition();		if(pos != NULL)			((CNPainterView*)GetNextView(pos))->OnUpdate(nullptr, HINT_UPDATE_WINDOW, nullptr);	}}

CProjectView* CProjectDoc::GetProjectView(){   POSITION pos = GetFirstViewPosition();   if (pos == NULL)      return NULL;   else      return (CProjectView*)GetNextView(pos);}

CDComView *CDComDoc::GetView(){    POSITION viewPos;    CDComView *pView;    viewPos = GetFirstViewPosition();    pView = (CDComView*)GetNextView(viewPos);    return pView;}

/** * @brief Stash away our view pointer. */void CDirDoc::SetDirView(CDirView * newView){	m_pDirView = newView;	// MFC has a view list for us, so lets check against it	POSITION pos = GetFirstViewPosition();	CDirView * temp = static_cast<CDirView *>(GetNextView(pos));	ASSERT(temp == m_pDirView); // verify that our stashed pointer is the same as MFC's}

BOOL CScintillaDoc::OnSaveDocument(LPCTSTR lpszPathName) {     POSITION pos = GetFirstViewPosition();   CScintillaView *pFirstView = (CScintillaView*)GetNextView( pos ); // assume only one view   if (pFirstView != NULL)      return pFirstView->Save(lpszPathName);	return CDocument::OnSaveDocument(lpszPathName);}