qt实现多线程刷新界面.zip

#include "mainwindow.h" #include "ui_mainwindow.h" #include<QPixmap> #include<mythread.h> #include<QThreadPool> #include<QPainter> #include<QTimer> #define REPAINT_TIME 200 MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); pixmap=new QPixmap(this->size()); pixmap->fill(Qt::white); myThread *m0=new myThread(pixmap); QThreadPool::globalInstance()->start(m0); //connect(m0,SIGNAL(rep()),this,SLOT(repaint())); QTimer *qt0=new QTimer(); qt0->setInterval(REPAINT_TIME); connect(qt0,SIGNAL(timeout()),this,SLOT(onTimeOut())); //qt0->start(); } MainWindow::~MainWindow() { delete ui; } void MainWindow::paintEvent(QPaintEvent *event){ QPainter painter(this); painter.drawPixmap(0,0,*pixmap,0,0,0,0); }