I'm trying to learn threads so I created a simple dialog based MFC app
with an edit box, a Run button and an Exit button.  Run starts a loop
that continually updates the edit control.  How do I modify the code so
that the dialog responds to events?  That is, so the Exit button will
work.  Do I even need threads in this situation?

void CThreadPracticeDlg::OnBnClickedRun()
{   
    int i = 0;
    while (1) {
        if (i >= 10) {
            i = 0;
        }
        char intString[2];
        _itoa(i,intString,10);
        CString msg = CString(intString);           
        m_edit1.SetWindowTextW(msg);
        i++;       
        Sleep(500);
    }   
}

void CThreadPracticeDlg::OnBnClickedExit()
{   
    exit(0);
}

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