MFC教程（9）－－ MFC的进程和线程（1）

核心提示：CNoTrackObject类在图9-3中， CnoTrackObject是根类，MFC教程（9）－－ MFC的进程和线程（1）(2)，所有状态类都是从它这里派生的，其定义如下：class CNoTrackObject{public:void* PASCAL operator new(size_t nSize);voi

CNoTrackObject类

在图9-3中， CnoTrackObject是根类，所有状态类都是从它这里派生的，其定义如下：

class CNoTrackObject

{

public:

void* PASCAL operator new(size_t nSize);

void PASCAL operator delete(void*);

#if defined(_DEBUG) && !defined(_AFX_NO_DEBUG_CRT)

void* PASCAL operator new(size_t nSize, LPCSTR, int);

#endif

virtual ~CNoTrackObject() { }

};

该类的析构函数是虚拟函数；而且，CNoTrackObject重载new操作符用来分配内存，重载delete操作符号用来释放内存，内部通过LocalAlloc/LocalFree提供了一个低层内存分配器（Low_level alloctor)。---www.bianceng.cn

AFX_MODULE_STATE类

AFX_MODULE_STATE类的定义如下：

// AFX_MODULE_STATE (global data for a module)

class AFX_MODULE_STATE : public CNoTrackObject

{

public:

#ifdef _AFXDLL

AFX_MODULE_STATE(BOOL bDLL,WNDPROC pfnAfxWndProc,

DWORD dwVersion);

AFX_MODULE_STATE(BOOL bDLL, WNDPROC pfnAfxWndProc,

DWORD dwVersion,BOOL bSystem);

#else

AFX_MODULE_STATE(BOOL bDLL);

#endif

~AFX_MODULE_STATE();

CWinApp* m_pCurrentWinApp;

HINSTANCE m_hCurrentInstanceHandle;

HINSTANCE m_hCurrentResourceHandle;

LPCTSTR m_lpszCurrentAppName;

BYTE m_bDLL;// TRUE if module is a DLL, FALSE if it is an EXE

//TRUE if module is a "system" module, FALSE if not

BYTE m_bSystem;

BYTE m_bReserved[2]; // padding

//Runtime class data:

#ifdef _AFXDLL

CRuntimeClass* m_pClassInit;

#endif

CTypedSimpleList<CRuntimeClass*> m_classList;

// OLE object factories

#ifndef _AFX_NO_OLE_SUPPORT

#ifdef _AFXDLL

COleObjectFactory* m_pFactoryInit;

#endif

CTypedSimpleList<COleObjectFactory*> m_factoryList;

#endif

// number of locked OLE objects

long m_nObjectCount;

BOOL m_bUserCtrl;

// AfxRegisterClass and AfxRegisterWndClass data

TCHAR m_szUnregisterList[4096];

#ifdef _AFXDLL

WNDPROC m_pfnAfxWndProc;

DWORD m_dwVersion; // version that module linked against

#endif

// variables related to a given process in a module

// (used to be AFX_MODULE_PROCESS_STATE)

#ifdef _AFX_OLD_EXCEPTIONS

// exceptions

AFX_TERM_PROC m_pfnTerminate;

#endif

void (PASCAL *m_pfnFilterToolTipMessage)(MSG*, CWnd*);

#ifdef _AFXDLL

// CDynLinkLibrary objects (for resource chain)

CTypedSimpleList<CDynLinkLibrary*> m_libraryList;

// special case for MFCxxLOC.DLL (localized MFC resources)

HINSTANCE m_appLangDLL;

#endif

#ifndef _AFX_NO_OCC_SUPPORT

// OLE control container manager

COccManager* m_pOccManager;

// locked OLE controls

CTypedSimpleList<COleControlLock*> m_lockList;

#endif

#ifndef _AFX_NO_DAO_SUPPORT

_AFX_DAO_STATE* m_pDaoState;

#endif

#ifndef _AFX_NO_OLE_SUPPORT

// Type library caches

CTypeLibCache m_typeLibCache;

CMapPtrToPtr* m_pTypeLibCacheMap;

#endif

// define thread local portions of module state

THREAD_LOCAL(AFX_MODULE_THREAD_STATE, m_thread)

};