如何从工作函数发送 unsigned char buf [10]
数组到 GUI 线程(主线程)?
我试图创建一个信号/槽机制,其中槽将 buf 作为函数参数传递到 GUI 线程中进行处理。
更新:
以下是我已经完成的内容:
工作类:
class Worker : public QObject
{
Q_OBJECT
public:
Worker(FILE *datafile, int sockint, int bitsint);
~Worker();
int channels_buf[10];
FILE *data;
int sock;
int bits;
public slots:
void doWork();
signals:
void finished();
void newinfo(unsigned char buf[10]);
private:
};
工人构造器
// Worker thread
Worker::Worker(FILE *datafile, int sockint, int bitsint)
:data(datafile)
,sock(sockint)
,bits(bitsint)
{
}
Worker::~Worker()
{
}
线程的功能
// Worker functions
void Worker::doWork()
{
unsigned char buf[10];
unsigned char crcval;
memset (buf, 0, 10);
while(1)
{
int i;
int numb;
numb = 0;
numb = recv (sock, buf, 10, MSG_WAITALL);
crcval = BP_CRC8 (buf, 9);
// 8 bits
if (bits == 0)
{
if (crcval == buf[9])
{
emit newinfo(buf);
}
}
}
emit finished();
}
然后我启动线程
Worker *worker;
QThread *workerThread;
worker = new Worker(data, sock, bits);
workerThread = new QThread(this);
connect(workerThread, SIGNAL(started()), worker, SLOT(doWork()));
connect(workerThread, SIGNAL(finished()), worker, SLOT(deleteLater()));
connect(worker, SIGNAL(newinfo(unsigned char[])), this, SLOT(process_new_info(unsigned char[])));
worker->moveToThread(workerThread);
workerThread->start();
这是在GUI线程中的一个函数,它被设计用来处理来自工作线程的unsigned char buf[10]
。
void gui::process_new_info(unsigned char buf[10])
{
int v = 0;
printf ("%d ->", buf[0]);
fprintf (data, "%d,", buf[0]);
for (int i = 1; i < 9; i++)
{
v = buf[i];
printf ("%d,", v);
fprintf (data, "%d,", v);
}
printf ("\n");
fprintf (data, "\n");
}