Pointers to threads

Suppose i have pointer to a thread like this

CWinThread *m_pThread = AfxBeginThread(StartThread, this, THREAD_PRIORITY_NORMAL, 0, 0);

Now in my开发者_StackOverflow StartThread function assume i did all operations and the function returned like this

UINT CClassThread::StartThread(LPVOID pVoid)
{
     return true;
}

Will my m_pThread be invalid when the return statement is executed?

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Yes, it will be invalid because it will be deleted at the end of the thread. However, if you set CWinThread::m_bAutoDelete to FALSE, the CWinThread* won't be deleted. I just googled for the answer and found it here: http://msdn.microsoft.com/en-us/library/48xz4yz9(VS.80).aspx

As an aside, if you were using pthreads (Unix threads), the answer would be no. When a thread terminates, its handle remains valid until you call pthread_join (wait for a thread to finish, deallocate it, and get its return value) or pthread_detach (tell a thread to deallocate itself when it completes).