C / C++ / MFC

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Expires: Wed, 21 Sep 2005 03:57:21 GMT
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Date: Tue, 20 Sep 2005 03:57:21 GMT
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Last-Modified: Fri, 16 Nov 2001 00:10:57 GMT
ETag: "f076372a336ec11:8b1"
Content-Length: 5826

UINT MyGlobalFunc(LPVOID pParam)<br />
{<br />
    CMyClass* pObject = (CMyClass*)pParam;<br />
    pObject->DoTimer();      // Of course DoTimer must be public<br />
}

UINT __cdecl DoTimer(LPVOID pParam)
{
....
}

class CTest
{
    CTest() { m_pThread = NULL; }
    ~CTest() { StopThread(); }
    .....
protected:
    CWinThread* m_pThread;
    volatile BOOL m_fStopThread;
    BOOL StartThread()
    {
        StopThread();
        m_fStopThread = FALSE;
        m_pThread = AfxBeginThread( ThreadFn, this, 0, 0, CREATE_SUSPENDED, NULL );
        if( m_pThread )
        {
            m_pThread->m_bAutoDelete = FALSE; // To be able to wait until it exits
            m_pThread->ResumeThread();
        }
        return (m_pThread != NULL);
    }
    void StopThread()
    {
        m_fStopThread = TRUE;
        if( m_pThread )
        {
            ::WaitForSingleObject( m_pThread->m_hThread, INFINITE );
            delete m_pThread;
            m_pThread = NULL;
        }
    }
    static UINT ThreadFn( LPVOID pThis )
    { 
        // This is the function passed as first parameter to AfxBeginThread
        return ((Ctest*)pThis)->ThreadFn(); 
    }
    UINT ThreadFn()
    {
        // This is your thread function, return from it and the thread terminates
        // You still have to clean up by deleting m_pThread though
        while( !m_fStopThread );
        return 0;
    }
};

<br />
class CMyThread<br />
{<br />
public:<br />
<br />
	CMyThread() {};<br />
	~CMyThread() {};<br />
<br />
	static UINT MyStaticClassBeginThreadProc( LPVOID pParam);<br />
<br />
protected:<br />
	int		m_iSomeMember;<br />
	int		m_iThreadState;<br />
};<br />
<br />
UINT CMyThread::MyStaticClassBeginThreadProc( LPVOID pParam)<br />
{<br />
	//Do something usefull threadstuff!!<br />
	//if you want to use classmembersm<br />
	//pass a this pointer  to the pParam<br />
	//and cast it. i.e. the living object<br />
	//for example:<br />
	CMyThread *pSelf = (CMyThread *)pParam;<br />
<br />
	pSelf->m_iSomeMember	= 1;<br />
	pSelf->m_iThreadState	= 0;<br />
<br />
	return 0;<br />
};<br />
<br />
//.... or<br />
<br />
UINT MyGlobalBeginThreadProc( LPVOID pParam)<br />
{<br />
	//Do something usefull threadstuff!!<br />
	return 0;<br />
};<br />
<br />
typedef struct<br />
{<br />
	int iLen;<br />
	int iState;<br />
	char cType;<br />
} SOMETHREADDATA;<br />
<br />
<br />
//.... later somewhere in your code<br />
<br />
SOMETHREADDATA threadData;<br />
CWinThread *pThread;<br />
CMyThread thread; //initialize the class<br />
pThread = AfxBeginThread( MyGlobalBeginThreadProc, (LPVOID*)&threadData);<br />
pThread = AfxBeginThread( CMyThread::MyStaticClassBeginThreadProc, (LPVOID*)&thread);<br />