Qt多线程编程实例

Qt: 多线程, 就是这么简单

#include<iostream>
#include<QApplication>
#include<QThread>
#include<QString>

classThread:publicQThread{
public:
Thread(QStringname=""){
stopped=false;
this->name=name;
}

voidrun(){
while(!stopped){
std::cout<<"In"<<name.toStdString()<<"'srun()."<<std::endl;
QThread::msleep(400);
}
}

voidstop(){
stopped=true;
}

private:
volatileboolstopped;
QStringname;
};

intmain(intargc,char*argv[]){
QApplicationapp(argc,argv);

Threadthread;
thread.start();
Threadthread1("Thread1");
thread1.start();
Threadthread2("Thread2");
thread2.start();

returnapp.exec();
}

在Widget中, 还可以使用如在继承自QObject 的 void showEvent(QShowEVent *event)中使用myTimerId = startTimer();
在void hideEvent(QHideEVent *event)中使用killTimer(myTimerId);
在void timerEvent(QTimerEvent *event)中更新数据
在void paintEvent(QPaintEvent *event)中动态显示数据

#include<iostream>
#include<QApplication>
#include<QThread>
#include<QString>

classThread:publicQThread{
public:
Thread(QStringname=""){
stopped=false;
this->name=name;
}

voidrun(){
while(!stopped){
std::cout<<"In"<<name.toStdString()<<"'srun()."<<std::endl;
QThread::msleep(400);
}
}

voidstop(){
stopped=true;
}

private:
volatileboolstopped;
QStringname;
};

intmain(intargc,char*argv[]){
QApplicationapp(argc,argv);

Threadthread;
thread.start();
Threadthread1("Thread1");
thread1.start();
Threadthread2("Thread2");
thread2.start();

returnapp.exec();
}

在Widget中, 还可以使用如在继承自QObject 的 void showEvent(QShowEVent *event)中使用myTimerId = startTimer();
在void hideEvent(QHideEVent *event)中使用killTimer(myTimerId);
在void timerEvent(QTimerEvent *event)中更新数据
在void paintEvent(QPaintEvent *event)中动态显示数据.