Qt 4.8: main.cpp Example File (activeqt/webbrowser/main.cpp)

Qt Reference Documentation

# main.cpp Example File

activeqt/webbrowser/main.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
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     ** This file is part of the examples of the Qt Toolkit.
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     ** $QT_BEGIN_LICENSE:BSD$
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     **     the names of its contributors may be used to endorse or promote
     **     products derived from this software without specific prior written
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     #include <QApplication>
     #include <QMessageBox>
     #include <QProgressBar>
     #include <QStatusBar>
     #include <QMainWindow>
     #include <QAbstractEventDispatcher>

     #if defined(Q_WS_WINCE_WM)
     #include "ui_mainwindow_windowsmobile.h"
     #include <windows.h>
     #else
     #include "ui_mainwindow.h"
     #endif

     class MainWindow : public QMainWindow, public Ui::MainWindow
     {
         Q_OBJECT
     public:
         MainWindow();

     public slots:
         void on_WebBrowser_TitleChange(const QString &title);
         void on_WebBrowser_ProgressChange(int a, int b);
         void on_WebBrowser_CommandStateChange(int cmd, bool on);
         void on_WebBrowser_BeforeNavigate();
         void on_WebBrowser_NavigateComplete(QString);

         void on_actionGo_triggered();
         void on_actionNewWindow_triggered();
         void on_actionAbout_triggered();
         void on_actionAboutQt_triggered();
         void on_actionFileClose_triggered();

     private:
         QProgressBar *pb;
     };

     MainWindow::MainWindow()
     {
         setupUi(this);

         connect(addressEdit, SIGNAL(returnPressed()), actionGo, SLOT(trigger()));
         connect(actionBack, SIGNAL(triggered()), WebBrowser, SLOT(GoBack()));
         connect(actionForward, SIGNAL(triggered()), WebBrowser, SLOT(GoForward()));
         connect(actionStop, SIGNAL(triggered()), WebBrowser, SLOT(Stop()));
         connect(actionRefresh, SIGNAL(triggered()), WebBrowser, SLOT(Refresh()));
         connect(actionHome, SIGNAL(triggered()), WebBrowser, SLOT(GoHome()));
         connect(actionSearch, SIGNAL(triggered()), WebBrowser, SLOT(GoSearch()));

         pb = new QProgressBar(statusBar());
         pb->setTextVisible(false);
         pb->hide();
         statusBar()->addPermanentWidget(pb);

         WebBrowser->dynamicCall("GoHome()");
     }

     void MainWindow::on_WebBrowser_TitleChange(const QString &title)
     {
         setWindowTitle("Qt WebBrowser - " + title);
     }

     void MainWindow::on_WebBrowser_ProgressChange(int a, int b)
     {
         if (a <= 0 || b <= 0) {
             pb->hide();
             return;
         }
         pb->show();
         pb->setRange(0, b);
         pb->setValue(a);
     }

     void MainWindow::on_WebBrowser_CommandStateChange(int cmd, bool on)
     {
         switch (cmd) {
         case 1:
             actionForward->setEnabled(on);
             break;
         case 2:
             actionBack->setEnabled(on);
             break;
         }
     }

     void MainWindow::on_WebBrowser_BeforeNavigate()
     {
         actionStop->setEnabled(true);
     }

     void MainWindow::on_WebBrowser_NavigateComplete(QString)
     {
         actionStop->setEnabled(false);
     }

     void MainWindow::on_actionGo_triggered()
     {
         WebBrowser->dynamicCall("Navigate(const QString&)", addressEdit->text());
     }

     void MainWindow::on_actionNewWindow_triggered()
     {
         MainWindow *window = new MainWindow;
         window->show();
         if (addressEdit->text().isEmpty())
             return;
         window->addressEdit->setText(addressEdit->text());
         window->actionStop->setEnabled(true);
         window->on_actionGo_triggered();
     }

     void MainWindow::on_actionAbout_triggered()
     {
         QMessageBox::about(this, tr("About WebBrowser"),
                     tr("This Example has been created using the ActiveQt integration into Qt Designer.\n"
                        "It demonstrates the use of QAxWidget to embed the Internet Explorer ActiveX\n"
                        "control into a Qt application."));
     }

     void MainWindow::on_actionAboutQt_triggered()
     {
         QMessageBox::aboutQt(this, tr("About Qt"));
     }

     void MainWindow::on_actionFileClose_triggered()
     {
         close();
     }

     #include "main.moc"

     int main(int argc, char ** argv)
     {
         QApplication a(argc, argv);
         MainWindow w;
     #if defined(Q_OS_WINCE)
         w.showMaximized();
     #else
         w.show();
     #endif
         return a.exec();
     }