imagepro.rar

1 class TransactionThread : public QThread { Q_OBJECT public: ... } 2 connect(&thread, SIGNAL(transactionStarted(const QString &)), //线程之间的信号-槽连接 statusBar(), SLOT(showMessage(const QString &))); connect(&thread, SIGNAL(finished()), this, SLOT(allTransactionsDone())); 3 void TransactionThread::addTransaction(Transaction *transact) { QMutexLocker locker(&mutex); //所有对transactions成员变量的访问都由一个互斥量保护起来 transactions.enqueue(transact); if (!isRunning()) //如果事务线程还没有运行，就触发它 start(); }