添加模板

在复写的CWinApp::InitInstance()函数中添加下面代码

CMultiDocTemplate* pDocTemplate;
pDocTemplate = new CMultiDocTemplate(IDR_SMARTTTYPE,RUNTIME_CLASS(CCosiWorksDoc),RUNTIME_CLASS(CChildFrame), // custom MDI child frameRUNTIME_CLASS(CCosiWorksView));
AddDocTemplate(pDocTemplate);

new一个CMultiDocTemplate，并用doc,frame,view的CRuntimeClass类初始化CMultiDocTemplate

然后调用AddDocTemplate，往CWinApp的成员m_pDocManager变量，文档管理器中添加模板

void CWinApp::AddDocTemplate(CDocTemplate* pTemplate)
{if (m_pDocManager == NULL)m_pDocManager = new CDocManager;m_pDocManager->AddDocTemplate(pTemplate);
}

打开文档

CDocument* CWinApp::OpenDocumentFile(LPCTSTR lpszFileName)
{ENSURE_VALID(m_pDocManager);return m_pDocManager->OpenDocumentFile(lpszFileName);
}CDocument* CDocManager::OpenDocumentFile(LPCTSTR lpszFileName)
{POSITION pos = m_templateList.GetHeadPosition();CDocTemplate* pBestTemplate = NULL;while (pos != NULL){CDocTemplate* pTemplate = (CDocTemplate*)m_templateList.GetNext(pos);CDocTemplate::Confidence match;match = pTemplate->MatchDocType(szPath, pOpenDocument);if (match > bestMatch){bestMatch = match;pBestTemplate = pTemplate;}if (match == CDocTemplate::yesAlreadyOpen)break;      // stop here}return pBestTemplate->OpenDocumentFile(szPath);}CDocument* CMultiDocTemplate::OpenDocumentFile(LPCTSTR lpszPathName,BOOL bMakeVisible)
{CDocument* pDocument = CreateNewDocument();
}CDocument* CDocTemplate::CreateNewDocument()
{CDocument* pDocument = (CDocument*)m_pDocClass->CreateObject();return pDocument;
}void CMultiDocTemplate::AddDocument(CDocument* pDoc)
{ASSERT_VALID(pDoc);CDocTemplate::AddDocument(pDoc);ASSERT(m_docList.Find(pDoc, NULL) == NULL); // must not be in listm_docList.AddTail(pDoc);
}CDocument* CMultiDocTemplate::OpenDocumentFile(LPCTSTR lpszPathName,BOOL bMakeVisible)
{CDocument* pDocument = CreateNewDocument();CFrameWnd* pFrame = CreateNewFrame(pDocument, NULL);
}CFrameWnd* CDocTemplate::CreateNewFrame(CDocument* pDoc, CFrameWnd* pOther)
{CFrameWnd* pFrame = (CFrameWnd*)m_pFrameClass->CreateObject();
}CDocument* CMultiDocTemplate::OpenDocumentFile(LPCTSTR lpszPathName,BOOL bMakeVisible)
{CDocument* pDocument = CreateNewDocument();CFrameWnd* pFrame = CreateNewFrame(pDocument, NULL);pDocument->OnOpenDocument(lpszPathName);
}

到这里调用到了CMultiDocTemplate中实际的文档里，就是RUNTIME_CLASS(CCosiWorksDoc)