求大手帮忙解释一下这段函数，本人新手不太懂，谢谢！

if(Time >Iner)                                   
{
MessageBox("end");

fclose(file);
m_pThread->PostThreadMessage(WM_DESTROY,0,0);
if (WAIT_OBJECT_0 == WaitForSingleObject(m_pThread->m_hThread, INFINITE))  
{  
// 3. 删除 UI 线程对象，只有当你设置了m_bAutoDelete = FALSE;　时才调用   
delete   m_pThread;   
} 
CloseHandle(m_hCom);  return 0;

}