C++ CDocument::OnOpenDocument方法代码示例

CDocument* CMyDocTemplate::OpenDocumentFile(LPCTSTR lpszPathName, BOOL bMakeVisible)
{
	if (lpszPathName == NULL)
	{
		TRACE(_T("Creating new documents is disabled.\n"));
		return NULL;
	}

	CWaitCursor wait;

	CDocument* pDocument = CreateNewDocument();
	if (pDocument == NULL)
	{
		TRACE(_T("CDocTemplate::CreateNewDocument returned NULL.\n"));
		AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC);
		return NULL;
	}
	ASSERT_VALID(pDocument);

	BOOL bAutoDelete = pDocument->m_bAutoDelete;
	pDocument->m_bAutoDelete = false;   // don't destroy if something goes wrong

	CWnd* pMDIChild = CreateNewMDIChild(pDocument);

	pDocument->m_bAutoDelete = bAutoDelete;
	if (pMDIChild == NULL)
	{
		AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC);
		delete pDocument;       // explicit delete on error
		return NULL;
	}
	ASSERT_VALID(pMDIChild);

	// open an existing document
	if (!pDocument->OnOpenDocument(lpszPathName))
	{
		// user has be alerted to what failed in OnOpenDocument
		TRACE(_T("CDocument::OnOpenDocument returned FALSE.\n"));
		pMDIChild->DestroyWindow();
		return NULL;
	}
	pDocument->SetPathName(lpszPathName);

	InitialUpdateMDIChild(pMDIChild, pDocument, bMakeVisible);
	return pDocument;
}

// @pymethod |PyCDocument|OnOpenDocument|Call the MFC OnOpenDocument handler.
// This routine is provided so a document object which overrides this method
// can call the original MFC version if required.
static PyObject *
ui_doc_on_open(PyObject *self, PyObject *args)
{
	TCHAR *pathName;
	PyObject *obpathName;
	if (!PyArg_ParseTuple(args, "O", &obpathName)) // @pyparm string|pathName||The full path of the file to open.
		return NULL;
	CDocument *pDoc;
	if (!(pDoc=PyCDocument::GetDoc(self)))
		return NULL;
	if (!PyWinObject_AsTCHAR(obpathName, &pathName, FALSE))
		return NULL;
	GUI_BGN_SAVE;
	BOOL ok = pDoc->OnOpenDocument(pathName);
	GUI_END_SAVE;
	PyWinObject_FreeTCHAR(pathName);
	if (!ok) // @pyseemfc CDocument|OnOpenDocument
		RETURN_ERR("OnOpenDocument failed");
	RETURN_NONE;
}

CDocument* CSaxBasicDocTemplate::OpenDocumentFile(LPCTSTR lpszPathName,
												  BOOL bMakeVisible)
{
	POSITION pos = GetFirstDocPosition();
	CDocument* pDoc;
	if (pos == NULL)
	{
		pDoc = CMultiDocTemplate::OpenDocumentFile(NULL);
		if (lpszPathName == NULL)
			return pDoc;
	}
	else
		pDoc = GetNextDoc(pos);

	if (lpszPathName == NULL)
		pDoc->OnNewDocument();
	else
		pDoc->OnOpenDocument(lpszPathName);

	return pDoc;
}

CDocument* CDocTemplateEx::OpenDocumentFile(LPCTSTR lpszPathName, BOOL bMakeVisible)
{
	CAIPIApp* pApp = (CAIPIApp*)AfxGetApp();

	if (m_docList.GetCount() == 1)
	{
		CDocument* pDocument = (CDocument*)m_docList.GetHead();
		BOOL e = pDocument->GetPathName().IsEmpty();
		BOOL m = pDocument->IsModified();

		if (lpszPathName != NULL && pDocument->GetPathName().IsEmpty() && pDocument->IsModified())
		{
			
			pApp->AipiOpenDocumentFile(lpszPathName);
	
			CWaitCursor wait;
			if (!pDocument->OnOpenDocument(lpszPathName))
			{
				// user has be alerted to what failed in OnOpenDocument
				TRACE0("CDocument::OnOpenDocument returned FALSE.\n");
				return NULL;
			}
			
			pDocument->SetPathName(lpszPathName);
			POSITION pos = pDocument->GetFirstViewPosition();
			CView* pView = pDocument->GetNextView(pos);
			CFrameWnd* pFrame = pView->GetParentFrame();
			InitialUpdateFrame(pFrame, pDocument);
			return pDocument;
		}
	}

	pApp->AipiOpenDocumentFile(lpszPathName);
	

	return CMultiDocTemplate::OpenDocumentFile(lpszPathName, bMakeVisible);
}

CDocument* CSingleDocTemplate::OpenDocumentFile(LPCTSTR lpszPathName,
	BOOL bMakeVisible)
	// if lpszPathName == NULL => create new file of this type
{
	CDocument* pDocument = NULL;
	CFrameWnd* pFrame = NULL;
	BOOL bCreated = FALSE;      // => doc and frame created
	BOOL bWasModified = FALSE;

	if (m_pOnlyDoc != NULL)
	{
		// already have a document - reinit it
		pDocument = m_pOnlyDoc;
		if (!pDocument->SaveModified())
			return NULL;        // leave the original one

		pFrame = (CFrameWnd*)AfxGetMainWnd();
		ASSERT(pFrame != NULL);
		ASSERT(pFrame->IsKindOf(RUNTIME_CLASS(CFrameWnd)));
		ASSERT_VALID(pFrame);
	}
	else
	{
		// create a new document
		pDocument = CreateNewDocument();
		ASSERT(pFrame == NULL);     // will be created below
		bCreated = TRUE;
	}

	if (pDocument == NULL)
	{
		AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC);
		return NULL;
	}
	ASSERT(pDocument == m_pOnlyDoc);

	if (pFrame == NULL)
	{
		ASSERT(bCreated);

		// create frame - set as main document frame
		BOOL bAutoDelete = pDocument->m_bAutoDelete;
		pDocument->m_bAutoDelete = FALSE;
					// don't destroy if something goes wrong
		pFrame = CreateNewFrame(pDocument, NULL);
		pDocument->m_bAutoDelete = bAutoDelete;
		if (pFrame == NULL)
		{
			AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC);
			delete pDocument;       // explicit delete on error
			return NULL;
		}
	}

	if (lpszPathName == NULL)
	{
		// create a new document
		SetDefaultTitle(pDocument);

		// avoid creating temporary compound file when starting up invisible
		if (!bMakeVisible)
			pDocument->m_bEmbedded = TRUE;

		if (!pDocument->OnNewDocument())
		{
			// user has been alerted to what failed in OnNewDocument
			TRACE0("CDocument::OnNewDocument returned FALSE.\n");
			if (bCreated)
				pFrame->DestroyWindow();    // will destroy document
			return NULL;
		}
	}
	else
	{
		BeginWaitCursor();

		// open an existing document
		bWasModified = pDocument->IsModified();
		pDocument->SetModifiedFlag(FALSE);  // not dirty for open

		if (!pDocument->OnOpenDocument(lpszPathName))
		{
			// user has been alerted to what failed in OnOpenDocument
			TRACE0("CDocument::OnOpenDocument returned FALSE.\n");
			if (bCreated)
			{
				pFrame->DestroyWindow();    // will destroy document
			}
			else if (!pDocument->IsModified())
			{
				// original document is untouched
				pDocument->SetModifiedFlag(bWasModified);
			}
			else
			{
				// we corrupted the original document
				SetDefaultTitle(pDocument);

				if (!pDocument->OnNewDocument())
				{
//.........这里部分代码省略.........