mainwindow.cpp Example File

simpletextviewer/mainwindow.cpp
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#include "assistant.h" #include "findfiledialog.h" #include "mainwindow.h" #include "textedit.h" #include <QAction> #include <QApplication> #include <QLibraryInfo> #include <QMenu> #include <QMenuBar> #include <QMessageBox> // ![0] MainWindow::MainWindow() { assistant = new Assistant; // ![0] textViewer = new TextEdit; textViewer->setContents(QLibraryInfo::location(QLibraryInfo::ExamplesPath) + QLatin1String("/assistant/simpletextviewer/documentation/intro.html")); setCentralWidget(textViewer); createActions(); createMenus(); setWindowTitle(tr("Simple Text Viewer")); resize(750, 400); // ![1] } void MainWindow::closeEvent(QCloseEvent *) { delete assistant; } 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::showDocumentation() { assistant->showDocumentation("index.html"); } void MainWindow::open() { FindFileDialog dialog(textViewer, assistant); dialog.exec(); } void MainWindow::createActions() { assistantAct = new QAction(tr("Help Contents"), this); assistantAct->setShortcut(QKeySequence::HelpContents); connect(assistantAct, SIGNAL(triggered()), this, SLOT(showDocumentation())); openAct = new QAction(tr("&Open..."), this); openAct->setShortcut(QKeySequence::Open); 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->setShortcuts(QKeySequence::Quit); 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); }