Qt:Документация 4.3.2/assistant-simpletextviewer-mainwindow-cpp

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[править] mainwindow.cpp Example File
assistant/simpletextviewer/mainwindow.cpp

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 #include <QtGui>
 
 #include "mainwindow.h"
 #include "findfiledialog.h"
 
 MainWindow::MainWindow()
 {
     textViewer = new QTextEdit;
     textViewer->setReadOnly(true);
     QFile file("documentation/intro.html");
     if (file.open(QIODevice::ReadOnly))
         textViewer->setHtml(file.readAll());
 
     setCentralWidget(textViewer);
 
     createActions();
     createMenus();
 
     initializeAssistant();
 
     setWindowTitle(tr("Simple Text Viewer"));
     resize(750, 400);
 }
 
 void MainWindow::closeEvent(QCloseEvent *)
 {
     if (assistantClient)
         assistantClient->closeAssistant();
 }
 
 void MainWindow::about()
 {
     QMessageBox::about(this, tr("About Simple Text Viewer"),
                          tr("This example demonstrates how to use\n" \
                             "Qt Assistant as help system for your\n" \
                             "own application."));
 }
 
 void MainWindow::assistant()
 {
     assistantClient->showPage(QLibraryInfo::location(QLibraryInfo::ExamplesPath) +
                                               QDir::separator() +
                                               "assistant/simpletextviewer/documentation/index.html");
 }
 
 void MainWindow::open()
 {
     FindFileDialog dialog(textViewer, assistantClient);
     dialog.exec();
 }
 
 void MainWindow::createActions()
 {
     assistantAct = new QAction(tr("Help Contents"), this);
     assistantAct->setShortcut(tr("F1"));
     connect(assistantAct, SIGNAL(triggered()), this, SLOT(assistant()));
 
     openAct = new QAction(tr("&Open..."), this);
     openAct->setShortcut(tr("Ctrl+O"));
     connect(openAct, SIGNAL(triggered()), this, SLOT(open()));
 
     clearAct = new QAction(tr("&Clear"), this);
     clearAct->setShortcut(tr("Ctrl+C"));
     connect(clearAct, SIGNAL(triggered()), textViewer, SLOT(clear()));
 
     exitAct = new QAction(tr("E&xit"), this);
     exitAct->setShortcut(tr("Ctrl+Q"));
     connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));
 
     aboutAct = new QAction(tr("&About"), this);
     connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
 
     aboutQtAct = new QAction(tr("About &Qt"), this);
     connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
 }
 
 void MainWindow::createMenus()
 {
     fileMenu = new QMenu(tr("&File"), this);
     fileMenu->addAction(openAct);
     fileMenu->addAction(clearAct);
     fileMenu->addSeparator();
     fileMenu->addAction(exitAct);
 
     helpMenu = new QMenu(tr("&Help"), this);
     helpMenu->addAction(assistantAct);
     helpMenu->addSeparator();
     helpMenu->addAction(aboutAct);
     helpMenu->addAction(aboutQtAct);
 
     menuBar()->addMenu(fileMenu);
     menuBar()->addMenu(helpMenu);
 }
 
 void MainWindow::initializeAssistant()
 {
     assistantClient = new QAssistantClient(QLibraryInfo::location(QLibraryInfo::BinariesPath), this);
 
     QStringList arguments;
     arguments << "-profile" << QString("documentation") + QDir::separator() + QString("simpletextviewer.adp");
     assistantClient->setArguments(arguments);
 }

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Qt 4.3.2