MFC教程（9）－－ MFC的进程和线程（1）

核心提示：_AFX_THREAD_STATE该类定义如下：class _AFX_THREAD_STATE : public CNoTrackObject{public:_AFX_THREAD_STATE();virtual ~_AFX_THREAD_STATE();// override for m_pModuleState i

_AFX_THREAD_STATE

该类定义如下：

class _AFX_THREAD_STATE : public CNoTrackObject

{

public:

_AFX_THREAD_STATE();

virtual ~_AFX_THREAD_STATE();

// override for m_pModuleState in _AFX_APP_STATE

AFX_MODULE_STATE* m_pModuleState;

AFX_MODULE_STATE* m_pPrevModuleState;

// memory safety pool for temp maps

void* m_pSafetyPoolBuffer; // current buffer

// thread local exception context

AFX_EXCEPTION_CONTEXT m_exceptionContext;

// CWnd create, gray dialog hook, and other hook data

CWnd* m_pWndInit;

CWnd* m_pAlternateWndInit; // special case commdlg hooking

DWORD m_dwPropStyle;

DWORD m_dwPropExStyle;

HWND m_hWndInit;

BOOL m_bDlgCreate;

HHOOK m_hHookOldCbtFilter;

HHOOK m_hHookOldMsgFilter;

// other CWnd modal data

MSG m_lastSentMsg; // see CWnd::WindowProc

HWND m_hTrackingWindow; // see CWnd::TrackPopupMenu

HMENU m_hTrackingMenu;

TCHAR m_szTempClassName[96]; // see AfxRegisterWndClass

HWND m_hLockoutNotifyWindow; // see CWnd::OnCommand

BOOL m_bInMsgFilter;

// other framework modal data

CView* m_pRoutingView; // see CCmdTarget::GetRoutingView

CFrameWnd*m_pRoutingFrame;//see CmdTarget::GetRoutingFrame

// MFC/DB thread-local data

BOOL m_bWaitForDataSource;

// common controls thread state

CToolTipCtrl* m_pToolTip;

CWnd* m_pLastHit; // last window to own tooltip

int m_nLastHit; // last hittest code

TOOLINFO m_lastInfo; // last TOOLINFO structure

int m_nLastStatus; // last flyby status message

CControlBar* m_pLastStatus; // last flyby status control bar

// OLE control thread-local data

CWnd* m_pWndPark; // "parking space" window

long m_nCtrlRef; // reference count on parking window

BOOL m_bNeedTerm; // TRUE if OleUninitialize needs to be called

};

从定义可以看出，线程状态的成员数据分如下几类：

指向模块状态信息的指针，支持本线程的窗口创建的变量，MFC命令和消息处理用到的信息，处理工具条提示信息(tooltip)的结构，和处理OLE相关的变量，等等。