#include "serialform.h"#include <qtimer.h>// some .h files used for serial port programming#include  <stdio.h>                                                        #include  <stdlib.h>#include  <unistd.h>#include  <sys/types.h>#include <sys/signal.h>#include  <sys/stat.h>#include  <fcntl.h>#include  <termios.h>#include  <errno.h>#include <limits.h>#define TIMEOUT_SEC (buflen,baud) (buflen*20/baud+2)#define TIMEOUT_USEC 0#define BUFFER_LEN	100000class QTimer;class Serial : public Serial_Form{    Q_OBJECT    public:    Serial(QWidget* parent = 0, const char* name = 0, bool modal = FALSE, WFlags fl = 0);	 ~Serial();protected:    int OpenSerialPort(int index);    int SetSerialPara(int databits,int stopbits,int parity,int speed);    int WriteComPort(const char *data,int datalength);    void CloseComPort();    int SendComFile(const char *path);    int BaudRate( int baudrate);    int _BaudRate(int baudrate);    int GetBaudRate();    QTimer *ReadComTimer;protected slots:    // slots connected to botton event    void OpenFile();        void SendFile();    void SaveDiplayData();    void OpenPort();    void ManulSend();    void ClearDisplay();    void AboutShow();    // slots connected to combobox event    void DatabitsChange(int);    void EvenoddChange(int);    void SerialportChange(int);    void StopbitsChange(int);    void BaudrateChange(int);    // slot connected to timeout event    void ReadComPort();private slots:    void ModifyPath();private:    int serialfd;    int Portsel;    int Ratesel;    int StopBitsel;    int DataBitsel;    int EvenOddsel;  };