【原创】QT编程多线程

请先保证已安装QT，没有请参考

http://www.cnblogs.com/kavs/p/4608926.html 安装QT。

新建threads文件夹存放项目：mkdir threads

sudo gedit main.cpp

输入如下代码：

#include <QApplication>

#include "threaddialog.h"

int main(int argc, char *argv[])

{

    QApplication app(argc, argv);

    ThreadDialog dialog;

    dialog.show();

    return app.exec();

}

保存退出文件。

终端输入

sudo gedit threa.cpp

键入代码：

#include <QtCore>

#include <iostream>

#include "thread.h"

Thread::Thread()

{

    stopped = false;

}

void Thread::setMessage(const QString &message)

{

    messageStr = message;

}

void Thread::run()

{

    while (!stopped)

        std::cerr << qPrintable(messageStr);

    stopped = false;

    std::cerr << std::endl;

}

void Thread::stop()

{

    stopped = true;

}

保存退出文件。

终端输入

sudo gedit thread.h

键入如下代码：

#ifndef THREAD_H

#define THREAD_H

#include <QThread>

class Thread : public QThread

{

    Q_OBJECT

public:

    Thread();

    void setMessage(const QString &message);

    void stop();

protected:

    void run();

private:

    QString messageStr;

    volatile bool stopped;

};

#endif

保存退出文件。

终端输入

sudo gedit threaddialog.cpp

键入如下代码：

#include <QtGui>

#include "threaddialog.h"

ThreadDialog::ThreadDialog(QWidget *parent)

    : QDialog(parent)

{

    threadA.setMessage("A");

    threadB.setMessage("B");

    threadAButton = new QPushButton(tr("Start A"));

    threadBButton = new QPushButton(tr("Start B"));

    quitButton = new QPushButton(tr("Quit"));

    quitButton->setDefault(true);

    connect(threadAButton, SIGNAL(clicked()),

            this, SLOT(startOrStopThreadA()));

    connect(threadBButton, SIGNAL(clicked()),

            this, SLOT(startOrStopThreadB()));

    connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));

    QHBoxLayout *mainLayout = new QHBoxLayout;

    mainLayout->addWidget(threadAButton);

    mainLayout->addWidget(threadBButton);

    mainLayout->addWidget(quitButton);

    setLayout(mainLayout);

    setWindowTitle(tr("Threads"));

}

void ThreadDialog::startOrStopThreadA()

{

    if (threadA.isRunning()) {

        threadA.stop();

        threadAButton->setText(tr("Start A"));

    } else {

        threadA.start();

        threadAButton->setText(tr("Stop A"));

    }

}

void ThreadDialog::startOrStopThreadB()

{

    if (threadB.isRunning()) {

        threadB.stop();

        threadBButton->setText(tr("Start B"));

    } else {

        threadB.start();

        threadBButton->setText(tr("Stop B"));

    }

}

void ThreadDialog::closeEvent(QCloseEvent *event)

{

    threadA.stop();

    threadB.stop();

    threadA.wait();

    threadB.wait();

    event->accept();

}

保存退出文件。

终端输入

sudo threaddialog.h

键入如下代码：

#ifndef THREADDIALOG_H

#define THREADDIALOG_H

#include <QDialog>

#include "thread.h"

class QPushButton;

class ThreadDialog : public QDialog

{

    Q_OBJECT

public:

    ThreadDialog(QWidget *parent = 0);

protected:

    void closeEvent(QCloseEvent *event);

private slots:

    void startOrStopThreadA();

    void startOrStopThreadB();

private:

    Thread threadA;

    Thread threadB;

    QPushButton *threadAButton;

    QPushButton *threadBButton;

    QPushButton *quitButton;

};

#endif

接下来开始编译：

在终端进入该项目的文件夹：

开始编译 qmake –project 生成threas.pro文件

键入 qmake threads.pro 生成Makefile文件键入make

编译程序。编译完成结果

键入./threads

over..

巴特西

【原创】QT编程多线程

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巴特西

【原创】QT编程 多线程

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【原创】QT编程多线程