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# previewwindow.cpp Example File

widgets/windowflags/previewwindow.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2015 The Qt Company Ltd.
     ** Contact: http://www.qt.io/licensing/
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** 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."
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     ****************************************************************************/

     #include <QtGui>

     #include "previewwindow.h"

     PreviewWindow::PreviewWindow(QWidget *parent)
         : QWidget(parent)
     {
         textEdit = new QTextEdit;
         textEdit->setReadOnly(true);
         textEdit->setLineWrapMode(QTextEdit::NoWrap);

         closeButton = new QPushButton(tr("&Close"));
         connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));

         QVBoxLayout *layout = new QVBoxLayout;
         layout->addWidget(textEdit);
         layout->addWidget(closeButton);
         setLayout(layout);

         setWindowTitle(tr("Preview"));
     }

     void PreviewWindow::setWindowFlags(Qt::WindowFlags flags)
     {
         QWidget::setWindowFlags(flags);

         QString text;

         Qt::WindowFlags type = (flags & Qt::WindowType_Mask);
         if (type == Qt::Window) {
             text = "Qt::Window";
         } else if (type == Qt::Dialog) {
             text = "Qt::Dialog";
         } else if (type == Qt::Sheet) {
             text = "Qt::Sheet";
         } else if (type == Qt::Drawer) {
             text = "Qt::Drawer";
         } else if (type == Qt::Popup) {
             text = "Qt::Popup";
         } else if (type == Qt::Tool) {
             text = "Qt::Tool";
         } else if (type == Qt::ToolTip) {
             text = "Qt::ToolTip";
         } else if (type == Qt::SplashScreen) {
             text = "Qt::SplashScreen";
         }

         if (flags & Qt::MSWindowsFixedSizeDialogHint)
             text += "\n| Qt::MSWindowsFixedSizeDialogHint";
         if (flags & Qt::X11BypassWindowManagerHint)
             text += "\n| Qt::X11BypassWindowManagerHint";
         if (flags & Qt::FramelessWindowHint)
             text += "\n| Qt::FramelessWindowHint";
         if (flags & Qt::WindowTitleHint)
             text += "\n| Qt::WindowTitleHint";
         if (flags & Qt::WindowSystemMenuHint)
             text += "\n| Qt::WindowSystemMenuHint";
         if (flags & Qt::WindowMinimizeButtonHint)
             text += "\n| Qt::WindowMinimizeButtonHint";
         if (flags & Qt::WindowMaximizeButtonHint)
             text += "\n| Qt::WindowMaximizeButtonHint";
         if (flags & Qt::WindowCloseButtonHint)
             text += "\n| Qt::WindowCloseButtonHint";
         if (flags & Qt::WindowContextHelpButtonHint)
             text += "\n| Qt::WindowContextHelpButtonHint";
         if (flags & Qt::WindowShadeButtonHint)
             text += "\n| Qt::WindowShadeButtonHint";
         if (flags & Qt::WindowStaysOnTopHint)
             text += "\n| Qt::WindowStaysOnTopHint";
         if (flags & Qt::CustomizeWindowHint)
             text += "\n| Qt::CustomizeWindowHint";

         textEdit->setPlainText(text);
     }