//QThread::quit()声明voidquit();//QThread::quit()定义voidQThread::quit(){exit(); }//QThread::exit()声明voidexit(intretcode =0);//QThread::exit()定义voidQThread::exit(intreturnCode){Q_D(QThread);QMutexLockerlocker(&d->mutex);d->exited =true;d->returnCode = returnCode;d->d...
10 //For this example, each byte counts as one resource. 11 //In a real-world application, we would probably operate on larger //units (for example, 64 or 256 bytes at a time) 12 class Producer : public QThread 13 { 14 public: 15 void run(); 16 }; 17 //生产者每acquire一次就...
#ifndef QT_NO_THREAD class Q_CORE_EXPORT QThread : public QObject { Q_OBJECT public: ...//省略 explicit QThread(QObject *parent = Q_NULLPTR); ~QThread(); ...//省略 void exit(int retcode = 0); //线程退出函数 ...//省略 public Q_SLOTS: void start(Priority = InheritPriority); ...
10 //For this example, each byte counts as one resource. 11 //In a real-world application, we would probably operate on larger //units (for example, 64 or 256 bytes at a time) 12 class Producer : public QThread 13 { 14 public: 15 void run(); 16 }; 17 //生产者每acquire一次就...
例05_qthread_example1,继承QThread类的线程(难度:一般)。项目路径为Qt/2/05_qthread_example1。本例通过QThread类继承线程,然后在MainWindow类里使用。通过点击一个按钮开启线程。当线程执行完成时,会发送resultReady(const QString &s)信号给主线程。流程就这么简单。
threadData->eventLoops.isEmpty()) {qWarning("QCoreApplication::exec: The event loop is already running");return -1;}// 设置标志,表示现在不应该退出事件循环threadData->quitNow = false;// 创建并进入一个新的事件循环QEventLoop eventLoop;self->d_func()->in_exec = true; // 标记 exec ...
为了满足用户构造复杂图形界面系统的需求,Qt提供了丰富的多线程编程支持。Qt主要从三个方面对多线程编程提供支持:一、构造了一些基本的与平台无关的线程类;二、提交用户自定义事件的 Thread-safe 方式;三、多种线程间同步机制,如信号量,全局锁。 1、QThread...
emit worker.stopRequested();customThread.wait(); 释放资源:确保在线程停止之前,正确释放资源并完成清理。在工作类的槽函数中,也可以添加必要的清理代码。 遵循上述步骤,可以使用 Qt 框架优雅地停止线程。这有助于确保线程运行期间资源得到正确管理,同时避免由于未完成的任务导致的内存泄漏和不稳定状态。
WorkerScript.onMessage=function(message){//Calculate result (may take a while, using a naive algorithm)varcalculatedResult=triangle(message.row,message.column);//Send result back to main threadWorkerScript.sendMessage({row:message.row,column:message.column,result:calculatedResult});} ...
Posted in Qt技术 tagged example, qimage, Qt, thread, thumbnail 在2:26 下午 由 cuteqt 关于多线程可讲的东西实在太多了,从多线程本身的概念,到Qt的多线程相关的类, 再到多线程编程相关的内容,方方面面, 不是一两篇贴子能讲明白的。 笔者准备尽我所能写一些通俗易懂的文章, 介绍一下和Qt多线程相关的...