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  4. Question on "InitInstance" method...

Question on "InitInstance" method...

Scheduled Pinned Locked Moved C / C++ / MFC
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  • S Offline
    S Offline
    Siva Sankar Koyi
    wrote on last edited by
    #1

    Following is the code from MFC frame work, if I call "pThread->InitInstance()" method application is calling CWinApp->InitInsatnce() method, CWinThread is super class of CWinApp when I call with super class object "InitInsatnce" method it should call CWinThread:InitInstance method, how it is going to sub class, can any body explain to me thanks, Siva --------------------------------------------------------------------- int AFXAPI AfxWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) { ASSERT(hPrevInstance == NULL); int nReturnCode = -1; CWinThread* pThread = AfxGetThread(); CWinApp* pApp = AfxGetApp(); // AFX internal initialization if (!AfxWinInit(hInstance, hPrevInstance, lpCmdLine, nCmdShow)) goto InitFailure; // App global initializations (rare) if (pApp != NULL && !pApp->InitApplication()) goto InitFailure; // Perform specific initializations if (pThread->InitInstance()) { if (pThread->m_pMainWnd != NULL) { TRACE0("Warning: Destroying non-NULL m_pMainWnd\n"); pThread->m_pMainWnd->DestroyWindow(); } nReturnCode = pThread->ExitInstance(); goto InitFailure; } nReturnCode = pThread->Run(); InitFailure: #ifdef _DEBUG // Check for missing AfxLockTempMap calls if (AfxGetModuleThreadState()->m_nTempMapLock != 0) { TRACE1("Warning: Temp map lock count non-zero (%ld).\n", AfxGetModuleThreadState()->m_nTempMapLock); } AfxLockTempMaps(); AfxUnlockTempMaps(-1); #endif AfxWinTerm(); return nReturnCode; } ---------------------------------------------------------------------------------

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    • S Siva Sankar Koyi

      Following is the code from MFC frame work, if I call "pThread->InitInstance()" method application is calling CWinApp->InitInsatnce() method, CWinThread is super class of CWinApp when I call with super class object "InitInsatnce" method it should call CWinThread:InitInstance method, how it is going to sub class, can any body explain to me thanks, Siva --------------------------------------------------------------------- int AFXAPI AfxWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) { ASSERT(hPrevInstance == NULL); int nReturnCode = -1; CWinThread* pThread = AfxGetThread(); CWinApp* pApp = AfxGetApp(); // AFX internal initialization if (!AfxWinInit(hInstance, hPrevInstance, lpCmdLine, nCmdShow)) goto InitFailure; // App global initializations (rare) if (pApp != NULL && !pApp->InitApplication()) goto InitFailure; // Perform specific initializations if (pThread->InitInstance()) { if (pThread->m_pMainWnd != NULL) { TRACE0("Warning: Destroying non-NULL m_pMainWnd\n"); pThread->m_pMainWnd->DestroyWindow(); } nReturnCode = pThread->ExitInstance(); goto InitFailure; } nReturnCode = pThread->Run(); InitFailure: #ifdef _DEBUG // Check for missing AfxLockTempMap calls if (AfxGetModuleThreadState()->m_nTempMapLock != 0) { TRACE1("Warning: Temp map lock count non-zero (%ld).\n", AfxGetModuleThreadState()->m_nTempMapLock); } AfxLockTempMaps(); AfxUnlockTempMaps(-1); #endif AfxWinTerm(); return nReturnCode; } ---------------------------------------------------------------------------------

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      David Crow
      wrote on last edited by
      #2

      Siva Sankar Koyi wrote:

      if I call "pThread->InitInstance()" method...

      Why would you want to call this method directly? It is a virtual method that is intended to be overridden. Other than that, I'm not really sure what it is that you are asking. :confused:


      "Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

      "There is no death, only a change of worlds." - Native American Proverb

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