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mainwindow.cpp Example File
linguist/trollprint/mainwindow.cpp

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 #include <QtGui>

 #include "mainwindow.h"
 #include "printpanel.h"

 MainWindow::MainWindow()
 {
     printPanel = new PrintPanel;
     setCentralWidget(printPanel);

     createActions();
     createMenus();

     setWindowTitle(tr("Troll Print 1.0"));
 }

 void MainWindow::about()
 {
     QMessageBox::information(this, tr("About Troll Print 1.0"),
                       tr("Troll Print 1.0.\n\n"
                       "Copyright 1999 Software, Inc."));
 }

 void MainWindow::createActions()
 {
     exitAct = new QAction(tr("E&xit"), this);
     exitAct->setShortcut(tr("Ctrl+Q", "Quit"));
     connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));

     aboutAct = new QAction(tr("&About"), this);
     aboutAct->setShortcut(Qt::Key_F1);
     connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));

     aboutQtAct = new QAction(tr("About &Qt"), this);
     connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
 }

 void MainWindow::createMenus()
 {
     QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
     fileMenu->addAction(exitAct);

     menuBar()->addSeparator();

     QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
     helpMenu->addAction(aboutAct);
     helpMenu->addAction(aboutQtAct);
 }