- QT中的线程操作
T19Process.pro
SOURCES
+=
\
main.cpp
CONFIG
+=
C++11
main.cpp
#include <QCoreApplication>
#include <QProcess>
#include <QDebug>
int main(int argc, char** argv)
{
QCoreApplication app(argc, argv);
QProcess process;
// process.start("/home/xuegl/T0718/build-T18Database-Desktop-Debug/T18Database");
process.start("ssh root@42.121.13.248");
// process.start("ssh", QStringList() << "root@42.121.13.248" << "aa" << "bbb");
// process.write("1\n", 2);
process.waitForFinished();
// process.waitForFinished();
qDebug() << process.readAll();
// qDebug() << process.exitCode();
return app.exec();
}
- 多线程（可以通过moveToThread(QThread *)的方法指定给指定的线程）
新建项目T20Thread,项目代码如下：
T20Thread.pro
HEADERS
+=
\
Worker.h
\
MyThread.h
SOURCES
+=
\
Worker.cpp
\
MyThread.cpp
\
main.cpp
Worker.h
#ifndef
WORKER_H
#define
WORKER_H
#include
<QObject>
#include
<QThread>
//要开启线程的时候需要使用头文件<QThread>
#include
<QDebug>
class
Worker
:
public
QObject
{
Q_OBJECT
public:
explicit
Worker(QObject
*parent
= 0);
QThread
_thread;
bool
event(QEvent
*ev)
{
//通过QThread::currentThread()可以获得当前线程信息
qDebug()
<<
"event:"
<<
QThread::currentThread();
return
QObject::event(ev);
}
signals:
public
slots:
void
doWork()
{
qDebug()
<<
QThread::currentThread();
}
};
#endif
//
WORKER_H
Worker.cpp
#include
"Worker.h"
Worker::Worker(QObject
*parent)
:
QObject(parent)
{
//this->moveToThread(&_thread);
_thread.start();
connect(&_thread,
SIGNAL(finished()),
this,
SLOT(deleteLater()));
}
MyThread.h
#ifndef
MYTHREAD_H
#define
MYTHREAD_H
#include
<QThread>
#include
<QDebug>
class
MyThread
:
public
QThread
{
Q_OBJECT
public:
explicit
MyThread(QObject
*parent
= 0);
void
foo()
{
qDebug()
<<
QThread::currentThread();
}
void
run()
{
foo();
qDebug()
<<
"thread
is
run";
}
signals:
public
slots:
};
#endif
//
MYTHREAD_H
MyThread.cpp
#include
"mythread.h"
MyThread::MyThread(QObject
*parent)
:
QThread(parent)
{
}
main.cpp
#include
<QCoreApplication>
#include
"mythread.h"
#include
"worker.h"
#include
<QTimer>
int
main(int
argc,
char*
argv[])
{
QCoreApplication
app(argc,
argv);
#if
0
MyThread
thread;
thread.start();
thread.foo();
#endif
qDebug()
<<
"main
thread
is"<<QThread::currentThread();
Worker*
worker
=
new
Worker();
QTimer*
timer
=
new
QTimer;
//worker->moveToThread(&thread);
QObject::connect(timer,
SIGNAL(timeout()),
worker,
SLOT(doWork()));
timer->setInterval(1000);
timer->start();
return
app.exec();
}
运行结果：
