- Qt 5.5
- Qt Widgets
- Window Flags Example
- previewwindow.cpp Example File
- Qt 5.5.1 Reference Documentation

# 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,
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    ** 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."
    **
    ** $QT_END_LICENSE$
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    ****************************************************************************/

    #include <QtWidgets>

    #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::NoDropShadowWindowHint)
            text += "\n| Qt::NoDropShadowWindowHint";
        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);
    }