|  | Home · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# main.cpp Example File
activeqt/webbrowser/main.cpp

     /****************************************************************************
     **
     ** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the documentation of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
    ** included in the packaging of this file.  Alternatively you may (at
    ** your option) use any later version of the GNU General Public
    ** License if such license has been publicly approved by Trolltech ASA
    ** (or its successors, if any) and the KDE Free Qt Foundation. In
    ** addition, as a special exception, Trolltech gives you certain
    ** additional rights. These rights are described in the Trolltech GPL
    ** Exception version 1.2, which can be found at
    ** http://www.trolltech.com/products/qt/gplexception/ and in the file
    ** GPL_EXCEPTION.txt in this package.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
    ** you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** In addition, as a special exception, Trolltech, as the sole
    ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
    ** Integration plug-in the right for the Qt/Eclipse Integration to
    ** link to functionality provided by Qt Designer and its related
    ** libraries.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
    ** granted herein.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #include <QApplication>
     #include <QMessageBox>
     #include <QProgressBar>
     #include <QStatusBar>
     #include <QMainWindow>
     #include <QAbstractEventDispatcher>

     #if defined(Q_OS_WINCE)
     #include "ui_wincemainwindow.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"
     static QAbstractEventDispatcher::EventFilter previous_filter = 0;
     HWND gParentWnd = 0;

     bool keyFilterProc(void *m)
     {
         // This filter is required to correct a problem specific to Internet explorer activeX control.
         // The IE activeX translates and processes the backspace & arrow keys in the TranslateAccelerator()
         // function itself. When it receives the corresponding WM_KEYDOWN messages, they are processed once again.
         MSG *msg = (MSG*)m;
         if (msg && gParentWnd && msg->message == WM_KEYDOWN && (msg->wParam == VK_BACK
             || (msg->wParam >= VK_LEFT && msg->wParam <= VK_DOWN))) {
                 if (msg->hwnd == gParentWnd || IsChild(gParentWnd, msg->hwnd)) {
                     if (previous_filter)
                         previous_filter(m);
                     return true;
                 }
         }
         if (previous_filter)
             return previous_filter(m);
         return false;
     }

     int main(int argc, char ** argv)
     {
         QApplication a(argc, argv);
         MainWindow w;
     #if defined(Q_OS_WINCE)
         w.showMaximized();
     #else
         w.show();
     #endif
         gParentWnd = w.WebBrowser->winId();
         previous_filter = QAbstractEventDispatcher::instance()->setEventFilter(keyFilterProc);
         return a.exec();
     }