sthread.h文件
#ifndef STHREAD_H
#define STHREAD_H
#include <qthread.h>
class DataForm;
class SThread : public QThread
{
    public:
                SThread();
                void stop();
                int ttyraw(int fd, int baud);
                int ttyreset(int fd);
                int OSOpenPort(const char *name, int baud);
                void comRecv();
   protected:
                virtual void run();
   private:
                volatile bool stopped;
};
#endif  //STHREAD_H
编译错误:
sthread.h : 8 : parse error before '{' token
sthread.h : 18 : parse error befor 'protected'
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