{
TRACE0(\未能创建工具栏\\n\ return -1; // 未能创建 }
if (!m_wndStatusBar.Create(this) || !m_wndStatusBar.SetIndicators(indicators, sizeof(indicators)/sizeof(UINT))) {
TRACE0(\未能创建状态栏\\n\ return -1; // 未能创建 }
//TODO: 如果不需要工具栏可停靠，则删除这三行 m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY); EnableDocking(CBRS_ALIGN_ANY); DockControlBar(&m_wndToolBar);
return 0; }
5:运行后为什么能产生CMainFarme，文档 ，视图以及视图外包围的farme呢？
你注意过吗，当我们一点运行，会默认出来一个视图窗口，这是谁调用的呢？哦，就是下面这几行，它调用void CWinApp::OnFileNew()函数.
CCommandLineInfo cmdInfo; ParseCommandLine(cmdInfo);
if (!ProcessShellCommand(cmdInfo)) return FALSE；
你可以自己跟踪以下。这里有个小技巧，你可以在BOOL CmyDoc::OnNewDocument()处设立断点，然后“跳出”，最后你会达到起始点!ProcessShellCommand(cmdInfo)
void CWinApp::OnFileNew() {
if (m_pDocManager != NULL)
m_pDocManager->OnFileNew(); //接着调用下面的函数 }
void CDocManager::OnFileNew() {
if (m_templateList.IsEmpty()) {
TRACE(traceAppMsg, 0, \ CWinApp.\\n\
AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC); return; }
CDocTemplate* pTemplate = (CDocTemplate*)m_templateList.GetHead(); if (m_templateList.GetCount() > 1) {
// more than one document template to choose from // bring up dialog prompting user CNewTypeDlg dlg(&m_templateList); INT_PTR nID = dlg.DoModal(); if (nID == IDOK)
pTemplate = dlg.m_pSelectedTemplate; else
return; // none - cancel operation }
ASSERT(pTemplate != NULL);
ASSERT_KINDOF(CDocTemplate, pTemplate);
pTemplate->OpenDocumentFile(NULL); //接着调用下面的函数
// if returns NULL, the user has already been alerted }
CDocument* CMultiDocTemplate::OpenDocumentFile(LPCTSTR lpszPathName, BOOL bMakeVisible) {
CDocument* pDocument = CreateNewDocument(); //产生模板控制之一：文档 if (pDocument == NULL) {
TRACE(traceAppMsg, 0, \L.\\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
CFrameWnd* pFrame = CreateNewFrame(pDocument, NULL); //产生新的：框架
pDocument->m_bAutoDelete = bAutoDelete; if (pFrame == NULL) {
AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC); delete pDocument; // explicit delete on error return NULL; }
ASSERT_VALID(pFrame);
if (lpszPathName == NULL)
{
// create a new document - with default document name SetDefaultTitle(pDocument);
// avoid creating temporary compound file when starting up invisible
if (!bMakeVisible)
pDocument->m_bEmbedded = TRUE;
if (!pDocument->OnNewDocument()) {
// user has be alerted to what failed in OnNewDocument
TRACE(traceAppMsg, 0, \\\n\
pFrame->DestroyWindow(); return NULL; }
// it worked, now bump untitled count m_nUntitledCount++; } else {
// open an existing document CWaitCursor wait;
if (!pDocument->OnOpenDocument(lpszPathName)) {
// user has be alerted to what failed in OnOpenDocument
TRACE(traceAppMsg, 0, \\\n\
pFrame->DestroyWindow();
return NULL; }
pDocument->SetPathName(lpszPathName); }
InitialUpdateFrame(pFrame, pDocument, bMakeVisible); return pDocument; }
我需要对上述函数进行进一步说明
(1)CreateNewDocument()产生文档
CDocument* CDocTemplate::CreateNewDocument() {
// default implementation constructs one from CRuntimeClass if (m_pDocClass == NULL) {
TRACE(traceAppMsg, 0, \eNewDocument.\\n\
ASSERT(FALSE); return NULL; }
CDocument* pDocument = (CDocument*)m_pDocClass->CreateObject(); if (pDocument == NULL) {
TRACE(traceAppMsg, 0, \ failed.\\n\
m_pDocClass->m_lpszClassName); return NULL;
}
ASSERT_KINDOF(CDocument, pDocument); AddDocument(pDocument); return pDocument; }
(2)CreateNewFrame(pDocument, NULL)，产生框架和视图
CFrameWnd* CDocTemplate::CreateNewFrame(CDocument* pDoc, CFrameWnd* pOther)
{
if (pDoc != NULL) ASSERT_VALID(pDoc);
// create a frame wired to the specified document
ASSERT(m_nIDResource != 0); // must have a resource ID to load from CCreateContext context;
context.m_pCurrentFrame = pOther;