深圳网站 制作信科便宜,桂林人论坛户外部落,seo优化技巧,wordpress移动客户端说明#xff1a;复现的代码来自《Qt C6.0》P496-P500。在复现时完全按照代码#xff0c;出现了两处报错#xff1a;
#xff08;1#xff09;ui指针#xff08;2#xff09;按钮的响应函数。下面程序对以上问题进行了修改。除了图片、清空、关闭功能外#xff0c;其他…说明复现的代码来自《Qt C6.0》P496-P500。在复现时完全按照代码出现了两处报错
1ui指针2按钮的响应函数。下面程序对以上问题进行了修改。除了图片、清空、关闭功能外其他功能实现复现。 主线程
.h文件
#pragma once#include QtWidgets/QMainWindow
#include ui_ThreadTest_one.h
#include QtClass.hclass ThreadTest_one : public QMainWindow//主线程
{Q_OBJECTprivate:QtClass* threadA;protected:void closeEvent(QCloseEvent* event);public:ThreadTest_one(QWidget* parent nullptr);~ThreadTest_one();private:Ui::ThreadTest_oneClass ui;public slots:void do_threadA_started();void do_threadA_finished();void do_threadA_newValue(int seq, int diceValue);void on_actThread_Run_clicked();void on_actDice_Run_clicked();void on_actThread_Quit_clicked();void on_actDict_Pause_clicked();
};
.cpp文件
#include ThreadTest_one.h
#include QCloseEvent
#include QThreadThreadTest_one::ThreadTest_one(QWidget *parent): QMainWindow(parent)
{ui.setupUi(this);threadA new QtClass(this);//创建工作线程connect(threadA, QtClass::started, this, ThreadTest_one::do_threadA_started);connect(threadA, QtClass::finished, this, ThreadTest_one::do_threadA_finished);connect(threadA, QtClass::newValue, this, ThreadTest_one::do_threadA_newValue);
}void ThreadTest_one::do_threadA_started() {ui.statusBar-showMessage(Thread状态:thread start);ui.actThread_Run-setEnabled(false);ui.actThread_Quit-setEnabled(true);ui.actDice_Run-setEnabled(true);}
void ThreadTest_one::do_threadA_finished() {ui.statusBar-showMessage(Thread状态:thread finished);ui.actThread_Run-setEnabled(true);ui.actThread_Quit-setEnabled(false);ui.actDice_Run-setEnabled(false);ui.actDict_Pause-setEnabled(false);
}void ThreadTest_one::do_threadA_newValue(int seq, int diceValue) {//与线程的newValue()信号相关联QString str QString::asprintf(第%d次投骰子点数为%d, seq, diceValue);ui.plainTextEdit-appendPlainText(str);}//按键的槽函数
void ThreadTest_one::on_actThread_Run_clicked() {//要用clicked才能得到响应threadA-start();
}
void ThreadTest_one::on_actThread_Quit_clicked() {threadA-stopThread();
}
void ThreadTest_one::on_actDice_Run_clicked() {threadA-diceBegin();ui.actDice_Run-setEnabled(false);ui.actDict_Pause-setEnabled(true);
}
void ThreadTest_one::on_actDict_Pause_clicked() {threadA-dicePause();ui.actThread_Run-setEnabled(true);ui.actDict_Pause-setEnabled(false);
}//重定义事件处理函数,确保窗口关闭时线程被停止
void ThreadTest_one::closeEvent(QCloseEvent* event) {if (threadA-isRunning()) {threadA-terminate();threadA-wait();}event-accept();
}ThreadTest_one::~ThreadTest_one()
{}
工作线程
.h文件
#pragma once#include QThreadclass QtClass : public QThread
{Q_OBJECTpublic:QtClass(QObject *parent);~QtClass();
private:int m_seq 0; //掷骰子次数的序号int m_diceValue;//骰子的点数bool m_paused true;//暂停投骰子bool m_stop false;//停止线程protected:void run();//线程的任务public:void diceBegin();//开始掷骰子void dicePause();//暂停投骰子void stopThread();//停止线程signals:void newValue(int seq, int diceValue);//产生新点数的信号};
.cpp文件
#include QtClass.h
#includeQRandomGenerator
#includeQThreadQtClass::QtClass(QObject *parent): QThread(parent)
{}
void QtClass::diceBegin() {//开始掷骰子m_paused false;
}
void QtClass::dicePause() {//停止掷骰子m_paused true;
}
void QtClass::stopThread() {//停止线程m_stop true;
}
void QtClass::run() {//run函数处理事件循环m_stop false;m_paused true;m_seq 0;while (!m_stop) {if (!m_paused) {m_diceValue QRandomGenerator::global()-bounded(1, 7);m_seq;emit newValue(m_seq, m_diceValue);}msleep(500);}quit();//退出线程
}
QtClass::~QtClass()
{}
