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DWORD WINAPI SerialPort1ThreadProcess(HWND hWnd){ CRS485Dlg obj; BYTE str[101]; DWORD wCount; DWORD dwEvtMask=0; SetCommMask(m_hSerial,EV_RXCHAR|EV_TXEMPTY); WaitCommEvent(m_hSerial,&dwEvtMask,&m_osWrite);     while(1) { if ((dwEvtMask & EV_RXCHAR)==EV_RXCHAR) { COMSTAT...