CWinApp::InitInstance

視窗允許相同程式的幾個複本同時執行。

virtual BOOL InitInstance( );

傳回值

如果不是零，初始化成功，則為 0。

備註

應用程式初始化概念上分成兩個部分:第一次執行程式執行的一次應用程式初始化和執行個體初始化每次執行程式執行的複本，第一個中。 WinMain 框架的實作會呼叫這個函式。

覆寫 InitInstance 初始化在 Windows 下的應用程式中每個新執行個體。 通常，您會覆寫 InitInstance 建構您的主視窗物件和設定 CWinThread::m_pMainWnd 資料成員指向該視窗。 如需覆寫這個成員函式的詳細資訊，請參閱 CWinApp:應用程式類別。

注意事項
必須初始化 MFC 應用程式設定為單一執行緒 Apartment (STA)。如果您呼叫您的 InitInstance 覆寫的 CoInitializeEx ，請指定 COINIT_APARTMENTTHREADED (而不是 COINIT_MULTITHREADED)。如需詳細資訊，請參閱<PRB:MFC 應用程式停止回應，當您使用應用程式設定為單一執行緒的多執行緒 Apartment (828643) 中 https://support.microsoft.com/default.aspx?scid=kb;en-us;828643。

範例

// AppWizard implements the InitInstance overridable function 
// according to options you select.  For example, the multiple document
// interface (MDI) option was chosen for the AppWizard code created
// below. You can add other per-instance initializations to the code
// created by AppWizard.

BOOL CMFCListViewApp::InitInstance()
{
   AfxSetAmbientActCtx(FALSE);
   // Remainder of function definition omitted.

   CWinApp::InitInstance();

   // Initialize OLE libraries
   if (!AfxOleInit())
   {
      AfxMessageBox(_T("OleInit failed."));
      return FALSE;
   }

   // Standard initialization
   // If you are not using these features and wish to reduce the size
   // of your final executable, you should remove from the following
   // the specific initialization routines you do not need
   // Change the registry key under which our settings are stored
   // TODO: You should modify this string to be something appropriate
   // such as the name of your company or organization
   SetRegistryKey(_T("Local AppWizard-Generated Applications"));
   LoadStdProfileSettings(4);  // Load standard INI file options (including MRU)
   // Register the application's document templates.  Document templates
   //  serve as the connection between documents, frame windows and views
   CMultiDocTemplate* pDocTemplate;
   pDocTemplate = new CMultiDocTemplate(IDR_MFCListViewTYPE,
      RUNTIME_CLASS(CMFCListViewDoc),
      RUNTIME_CLASS(CChildFrame), // custom MDI child frame
      RUNTIME_CLASS(CMyListView));
   if (!pDocTemplate)
      return FALSE;
   AddDocTemplate(pDocTemplate);

   // create main MDI Frame window
   CMainFrame* pMainFrame = new CMainFrame;
   if (!pMainFrame || !pMainFrame->LoadFrame(IDR_MAINFRAME))
   {
      delete pMainFrame;
      return FALSE;
   }
   m_pMainWnd = pMainFrame;
   // call DragAcceptFiles only if there's a suffix
   //  In an MDI app, this should occur immediately after setting m_pMainWnd


   // Parse command line for standard shell commands, DDE, file open
   CCommandLineInfo cmdInfo;
   ParseCommandLine(cmdInfo);


   // Dispatch commands specified on the command line.  Will return FALSE if
   // app was launched with /RegServer, /Register, /Unregserver or /Unregister.
   if (!ProcessShellCommand(cmdInfo))
      return FALSE;
   // The main window has been initialized, so show and update it
   pMainFrame->ShowWindow(m_nCmdShow);
   pMainFrame->UpdateWindow();

   return TRUE;
}

需求

Header: afxwin.h

請參閱

參考

CWinApp 類別

階層架構圖