text: /****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the test suite of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL21$
  ** 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 http://www.qt.io/terms-conditions. For further
  ** information use the contact form at http://www.qt.io/contact-us.
  **
  ** GNU Lesser General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU Lesser
  ** General Public License version 2.1 or version 3 as published by the Free
  ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
  ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
  ** following information to ensure the GNU Lesser General Public License
  ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
  ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  **
  ** As a special exception, The Qt Company gives you certain additional
  ** rights. These rights are described in The Qt Company LGPL Exception
  ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  #include <QtWidgets>
  
  class CursorWindow : public QRasterWindow
  {
  public:
      CursorWindow(QCursor cursor, QColor color)
      :m_cursor(cursor)
      ,m_color(color)
      {
          if (cursor.shape() == Qt::ArrowCursor)
              unsetCursor();
          else
              setCursor(cursor);
      }
  
      void paintEvent(QPaintEvent *e)
      {
          QPainter p(this);
          p.fillRect(e->rect(), m_color);
      }
  
      void mousePressEvent(QMouseEvent *)
      {
          // Toggle cursor
          QCursor newCursor = (cursor().shape() == m_cursor.shape()) ? QCursor() : m_cursor;
          if (newCursor.shape() == Qt::ArrowCursor)
              unsetCursor();
          else
              setCursor(newCursor);
      }
  
  private:
      QCursor m_cursor;
      QColor m_color;
  };
  
  class CursorWidget : public QWidget
  {
  public:
      CursorWidget(QCursor cursor, QColor color)
      :m_cursor(cursor)
      ,m_color(color)
      {
          if (cursor.shape() == Qt::ArrowCursor)
              unsetCursor();
          else
              setCursor(cursor);
      }
  
      void paintEvent(QPaintEvent *e)
      {
          QPainter p(this);
          p.fillRect(e->rect(), m_color);
      }
  
      void mousePressEvent(QMouseEvent *)
      {
          // Toggle cursor
          QCursor newCursor = (cursor().shape() == m_cursor.shape()) ? QCursor() : m_cursor;
          if (newCursor.shape() == Qt::ArrowCursor)
              unsetCursor();
          else
              setCursor(newCursor);
      }
  
  private:
      QCursor m_cursor;
      QColor m_color;
  };
  
  int main(int argc, char **argv)
  {
      QApplication app(argc, argv);
  
      {
          // Create top-level windowContainer with window. Setting the cursor
          // for the container should set the cursor for the window as well.
          // Setting the cursor for the window overrides the cursor for the
          // container. The example starts out with a window cursor; click
          // to fall back to the container cursor.
          CursorWindow *w1 = new CursorWindow(QCursor(Qt::OpenHandCursor), QColor(Qt::red).darker());
          QWidget* container = QWidget::createWindowContainer(w1);
          container->resize(200, 200);
          container->setCursor(Qt::PointingHandCursor);
          container->show();
      }
  
      {
          // Similar to above, but with a top-level QWiget
          CursorWidget *w1 = new CursorWidget(QCursor(Qt::IBeamCursor), QColor(Qt::green).darker());
          w1->resize(200, 200);
  
          CursorWindow *w2 = new CursorWindow(QCursor(Qt::OpenHandCursor), QColor(Qt::red).darker());
          QWidget* container = QWidget::createWindowContainer(w2);
          container->winId(); // must make the container native, otherwise setCursor
                              // sets the cursor on a QWindowContainerClassWindow which
                              // is outside the QWindow hierarchy (macOS).
          container->setParent(w1);
          container->setCursor(Qt::PointingHandCursor);
          container->setGeometry(0, 0, 100, 100);
  
          w1->show();
      }
  
      return app.exec();
  }
  