信号与槽 实验1

<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">一个信号可以连接多个槽，因此做了一个关于信号和嘈的有趣的实验：</span>

<pre name="code" class="cpp">#include "mainwindow.h"#include "ui_mainwindow.h"MainWindow::MainWindow(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::MainWindow){    ui->setupUi(this);    number = 0;    connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(changeEdit1Text()));    connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(changeEdit2Text()));}MainWindow::~MainWindow(){    delete ui;}void MainWindow::changeEdit1Text(){    number++;    ui->lineEdit->setText(QString("number: %1").arg(number));}void MainWindow::changeEdit2Text(){    number++;    ui->lineEdit_2->setText(QString("number: %1").arg(number));}