CDocument::AddView

아티클
02/21/2013

뷰는 문서에 연결 하려면이 함수를 호출 합니다.

void AddView(
   CView* pView 
);

매개 변수

pView
추가 되는 보기를 가리킵니다.

설명

뷰는 문서와 연결 된 목록에 지정한 보기가이 함수를 추가 합니다. 함수는 또한이 문서에는 보기 문서 포인터를 설정합니다.새로 만든된 보기 개체를 문서에 첨부 하면 프레임 워크가이 함수를 호출 합니다. 이 응답 파일을 새 파일 열기 또는 새 창 명령을 또는 분할 창이 분할 된 경우에 발생 합니다.

만 수동으로 만들고 뷰를 연결 하는 경우이 함수를 호출 합니다.일반적으로 프레임 워크를 정의 하 여 문서 및 뷰를 연결할 수 있는 만드 는 문서 클래스, 뷰 클래스와 프레임 창 클래스를 연결 하는 개체.

예제

// The following example toggles two views in an SDI (single document
// interface) frame window. A design decision must be made as to
// whether to leave the inactive view connected to the document,
// such that the inactive view continues to receive OnUpdate
// notifications from the document. It is usually desirable to
// keep the inactive view continuously in sync with the document, even 
// though it is inactive. However, doing so incurs a performance cost,
// as well as the programming cost of implementing OnUpdate hints.
// It may be less expensive, in terms of performance and/or programming,
// to re-sync the inactive view with the document only with it is 
// reactivated. This example illustrates this latter approach, by 
// reconnecting the newly active view and disconnecting the newly 
// inactive view, via calls to CDocument::AddView and RemoveView.

void CMainFrame::OnViewChange(UINT nCmdID)
// There is an ON_COMMAND_RANGE message map entry associated with
// OnViewChange:
// ON_COMMAND_RANGE(ID_VIEW_CHANGE1, ID_VIEW_CHANGE2, &OnViewChange)
{
   CView* pViewAdd;
   CView* pViewRemove;
   CDocument* pDoc = GetActiveDocument();

   // cvView1 and cvView2 are enum members defined in my CMainFrame class
   if((nCmdID == ID_VIEW_CHANGE1) && (m_currentView == cvView1))
      return;
   if((nCmdID == ID_VIEW_CHANGE2) && (m_currentView == cvView2))
      return;

   if (nCmdID == ID_VIEW_CHANGE2)
   {
      if (m_pView2 == NULL)
      {
         m_pView1 = GetActiveView();
         m_pView2 = new CMyView2;

         //Note that if OnSize has been overridden in CMyView2 
         //and GetDocument() is used in this override it can 
         //cause assertions and, if the assertions are ignored,
         //cause access violation.

         m_pView2->Create(NULL, NULL, AFX_WS_DEFAULT_VIEW, rectDefault, this, 
            AFX_IDW_PANE_FIRST + 1, NULL);
      }
      pViewAdd = m_pView2;
      pViewRemove = m_pView1;
      m_currentView = cvView2;
   }
   else
   {
      pViewAdd = m_pView1;
      pViewRemove = m_pView2;
      m_currentView = cvView1;
   }

   // Set the child i.d. of the active view to AFX_IDW_PANE_FIRST,
   // so that CFrameWnd::RecalcLayout will allocate to this 
   // "first pane" that portion of   the frame window's client area 
   // not allocated to control   bars.  Set the child i.d. of the 
   // other view to anything other than AFX_IDW_PANE_FIRST; this
   // examples switches the child id's of the two views.

   int nSwitchChildID = pViewAdd->GetDlgCtrlID();
   pViewAdd->SetDlgCtrlID(AFX_IDW_PANE_FIRST);
   pViewRemove->SetDlgCtrlID(nSwitchChildID);

   // Show the newly active view and hide the inactive view.

   pViewAdd->ShowWindow(SW_SHOW);
   pViewRemove->ShowWindow(SW_HIDE);

   // Connect the newly active view to the document, and
   // disconnect the inactive view.
   pDoc->AddView(pViewAdd);
   pDoc->RemoveView(pViewRemove);

   SetActiveView(pViewAdd);
   RecalcLayout();
}