.hpp
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include<QTime>
#include<QThread>
static QVector<int>myArray;
static QVector<int>myAnotherArray;
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = nullptr);
~MainWindow();
private slots:
void on_pushButton_clicked();
void updateSlot(int _number);
void on_pushButton_2_clicked();
private:
Ui::MainWindow *ui;
int number;
};
class MyThread:public QThread
{
Q_OBJECT
public:
MyThread(){}
void run();
void getNumber(int & number);
signals:
void updateSignal(int num);
private:
int myNumber;
};
#endif // MAINWINDOW_H
.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<QDebug>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
MyThread * thread = new MyThread();
thread->start();
connect(thread,SIGNAL(updateSignal(int)),this,SLOT(updateSlot(int)));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::on_pushButton_clicked()
{
QTime time;
time= QTime::currentTime();
qsrand(time.msec()+time.second()*1000);
int n = qrand() % 50; //产生50以内的随机数
myArray.push_back(n);
}
void MainWindow::on_pushButton_2_clicked()
{
// if(myAnotherArray.size() >0)
// {
// int front = myAnotherArray.front();
// ui->plainTextEdit->appendPlainText(QString::number(front));
// myAnotherArray.pop_front();
// }
}
void MainWindow::updateSlot(int _number){
ui->plainTextEdit->appendPlainText(QString::number(_number));
}
void MyThread::getNumber(int & number){
myNumber = number;
}
void MyThread::run(){
while(!isInterruptionRequested())
{
if(myArray.size() > 0)
{
myNumber = myArray.front();
myAnotherArray.push_back(myNumber);
qDebug()<<myNumber;
myArray.pop_front();
emit updateSignal(myNumber);
msleep(50);
}
}
}
main.cpp
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
运行结果
线程中生成的随机数
