Qt plainTextEdit控件实时输出

#include "mainwindow.h" #include "ui_mainwindow.h" #include <QMessageBox> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); connect(ui->dynamic_PushButton,SIGNAL(clicked()),this,SLOT(myDynamicOutput())); connect(ui->static_PushButton,SIGNAL(clicked()),this,SLOT(staticOutput())); } MainWindow::~MainWindow() { delete ui; } void MainWindow::myDynamicOutput() { ui->plainTextEdit->clear(); for(int i=0;i<6000;i++) { ui->plainTextEdit->appendPlainText(QString::number(i,10)); QApplication::processEvents(); } } void MainWindow::staticOutput() { ui->plainTextEdit->clear(); for(int i=0;i<6000;i++) { ui->plainTextEdit->appendPlainText(QString::number(i,10)); } }