/******************************************************************* *                 a demo for how to use QThread   * 声明： *     这是一个简单的QThread使用模板，对于应付简单的程序来说， * 还是足够了。 * *                           2015-9-12 阴 深圳 南山平山村 曾剑锋 ******************************************************************/cat thread.h    #ifndef THREAD_H    #define THREAD_H        #include 
     
              class Thread : public QThread    {        Q_OBJECT    public:        explicit Thread(QObject *parent = 0);            signals:        void msg(QString str);    public slots:        void run();        void stop();        private:        bool running;    };        #endif // THREAD_Hcat thread.c    #include "thread.h"        Thread::Thread(QObject *parent) :        QThread(parent)    {        running = true;    }        void Thread::run()    {        int nbytes;        int len;        struct can_frame frame;        struct sockaddr_can addr;        char buf[10];            while(running)        {            QThread::msleep(100);            /**              * this was very important sametime for receive data              */            if (running) {               emit msg(QString(buf));            }        }    }        void Thread::stop()    {        running = false;    }    cat mainwindow.c    ......    /**      * how to stop a Qt thread      */    if ( thread != NULL ) {        thread->stop();        thread->wait();        thread->deleteLater();    }    ......