mainwindow.cpp Example File

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#include <QtWidgets>
#include "mainwindow.h"
static const char * const listEntries[] = {
    QT_TRANSLATE_NOOP("MainWindow", "First"),
    QT_TRANSLATE_NOOP("MainWindow", "Second"),
    QT_TRANSLATE_NOOP("MainWindow", "Third"),
    0
};
MainWindow::MainWindow()
{
    centralWidget = new QWidget;
    setCentralWidget(centralWidget);
    createGroupBox();
    listWidget = new QListWidget;
    for (int i = 0; listEntries[i]; ++i)
        listWidget->addItem(tr(listEntries[i]));
    QVBoxLayout *mainLayout = new QVBoxLayout;
    mainLayout->addWidget(groupBox);
    mainLayout->addWidget(listWidget);
    centralWidget->setLayout(mainLayout);
    exitAction = new QAction(tr("E&xit"), this);
    connect(exitAction, &QAction::triggered, qApp, QApplication::quit);
    fileMenu = menuBar()->addMenu(tr("&File"));
    fileMenu->setPalette(QPalette(Qt::red));
    fileMenu->addAction(exitAction);
    setWindowTitle(tr("Language: %1").arg(tr("English")));
    statusBar()->showMessage(tr("Internationalization Example"));
    if (tr("LTR") == "RTL")
        setLayoutDirection(Qt::RightToLeft);
}
void MainWindow::createGroupBox()
{
    groupBox = new QGroupBox(tr("View"));
    perspectiveRadioButton = new QRadioButton(tr("Perspective"));
    isometricRadioButton = new QRadioButton(tr("Isometric"));
    obliqueRadioButton = new QRadioButton(tr("Oblique"));
    perspectiveRadioButton->setChecked(true);
    QVBoxLayout *groupBoxLayout = new QVBoxLayout;
    groupBoxLayout->addWidget(perspectiveRadioButton);
    groupBoxLayout->addWidget(isometricRadioButton);
    groupBoxLayout->addWidget(obliqueRadioButton);
    groupBox->setLayout(groupBoxLayout);
}