PyQt中QThread多线程的正确用法

先贴几篇有意思的讨论

So, the conclusion is:
1. Don't read Qt 4.6 docs, it is wrong as it says "To create your own threads, subclass QThread and reimplement run()." http://doc.qt.nokia.com/4.6...

Don't read the given "best resource", it is also wrong, because it also subclasses QThread: "...just a small amount of work: subclass QThread and reimplement run().." http://labs.trolltech.com/b...

The correct answer is in the shortest blog given in the comments: http://labs.trolltech.com/b...
Here's a shortened snippet from it for those who don't want to dig into the tarball:

class Producer : public QObject
{
Q_OBJECT
public slots:
void produce() { ...emit produced(&data)...emit finished().. }
signals:
void produced(QByteArray *data);
void finished();
};

class Consumer : public QObject
{
Q_OBJECT
public slots:
void consume(QByteArray *data) { ...emit consumed()...emit finished().. }
signals:
void consumed();
void finished();
};

int main(int argc, char **argv)
{
QCoreApplication app(argc, argv);
// create the producer and consumer and plug them together
Producer producer;
Consumer consumer;
producer.connect(&consumer, SIGNAL(consumed()), SLOT(produce()));
consumer.connect(&producer, SIGNAL(produced(QByteArray *)), SLOT(consume(QByteArray *)));

// they both get their own thread  
QThread producerThread;  
producer.moveToThread(&amp;producerThread);  
QThread consumerThread;  
consumer.moveToThread(&amp;consumerThread);

// start producing once the producer's thread has started  
producer.connect(&amp;producerThread, SIGNAL(started()), SLOT(produce()));

// when the consumer is done, it stops its thread  
consumerThread.connect(&amp;consumer, SIGNAL(finished()), SLOT(quit()));  
// when consumerThread is done, it stops the producerThread  
producerThread.connect(&amp;consumerThread, SIGNAL(finished()), SLOT(quit()));  
// when producerThread is done, it quits the application  
app.connect(&amp;producerThread, SIGNAL(finished()), SLOT(quit()));

// go!  
producerThread.start();  
consumerThread.start();  
return app.exec();

}

原文地址：https://www.cnblogs.com/flyflit/p/12935157.html