I18N Example | Qt Widgets 5.13.0

Qt 5.13 | Qt Widgets | I18N Example

Qt 5.13.0 Reference Documentation

# I18N Example

      /****************************************************************************
      **
      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** Commercial License Usage
      ** Licensees holding valid commercial Qt licenses may use this file in
      ** accordance with the commercial license agreement provided with the
      ** Software or, alternatively, in accordance with the terms contained in
      ** a written agreement between you and The Qt Company. For licensing terms
      ** and conditions see https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** BSD License Usage
      ** Alternatively, you may use this file under the terms of the BSD license
      ** as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
      **     notice, this list of conditions and the following disclaimer.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #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);
      }