previewwindow.cpp Example File

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 ** Contact: http://www.qt-project.org/
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 ** This file is part of the examples of the Qt Toolkit.
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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::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);
 }