QT学习，最简单的Web浏览器

目标 请求一个网址 并把其html载入到edittext中

class MainWindow : public QMainWindow{    Q_OBJECT    public:    explicit MainWindow(QWidget *parent = 0);    ~MainWindow();    private:    Ui::MainWindow *ui;    QNetworkAccessManager *manager;//声明QNetworkAccessManager变量private slots://声明请求完成的信号槽    void replyFinished(QNetworkReply *);};

界面就不用说了 就是一个textEdit

然后是核心代码

#include "mainwindow.h"#include "ui_mainwindow.h"MainWindow::MainWindow(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::MainWindow){    ui->setupUi(this);    manager = new QNetworkAccessManager(this);  //新建QNetworkAccessManager对象    manager->get(QNetworkRequest(QUrl("http://www.yafeilinux.com"))); //发送请求    connect(manager,SIGNAL(finished(QNetworkReply*)), this,SLOT(replyFinished(QNetworkReply*)));    //关联信号和槽 当QNetworkAccessManager的联网操作结束时候会调用finished方法 将会激发本类的replyFinished方法把这个信息显示到edittext中}void MainWindow::replyFinished(QNetworkReply *reply)  //当回复结束后{    QTextCodec *codec = QTextCodec::codecForName("utf8");    //使用utf8编码，这样才可以显示中文    QString all = codec->toUnicode(reply->readAll());    ui->textEdit->setText(all);    reply->deleteLater();   //最后要释放reply对象}MainWindow::~MainWindow(){    delete ui;}

工程代码

http://dl.vmall.com/c01eoa8cvs