Active Qt Examples: Brush up to C++ 11

Use nullptr, member initialization, new connect syntax, QStringLiteral, etc.

Change-Id: Ia79473ca302216f91eec6a32f670cf606761ed0d
Reviewed-by: Michael Winkelmann <michael.winkelmann@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

21 files changed, 450 insertions, 463 deletions

diff --git a/examples/activeqt/comapp/main.cpp b/examples/activeqt/comapp/main.cpp
index 8e49d0e..cfe0586 100644
--- a/examples/activeqt/comapp/main.cpp
+++ b/examples/activeqt/comapp/main.cpp
@@ -41,6 +41,7 @@
 #include <QApplication>
 #include <QAxFactory>
 #include <QTabWidget>
+#include <QScopedPointer>
 #include <QTimer>
 
 class Application;
@@ -58,8 +59,8 @@ class Document : public QObject
     Q_PROPERTY(QString title READ title WRITE setTitle)
 
 public:
-    Document(DocumentList *list);
-    ~Document();
+    explicit Document(DocumentList *list);
+    virtual ~Document();
 
     Application *application() const;
 
@@ -67,7 +68,7 @@ public:
     void setTitle(const QString &title);
 
 private:
-    QWidget *page;
+    QScopedPointer <QWidget> m_page;
 };
 //! [0]
 
@@ -83,7 +84,7 @@ class DocumentList : public QObject
     Q_PROPERTY(int count READ count)
 
 public:
-    DocumentList(Application *application);
+    explicit DocumentList(Application *application);
 
     int count() const;
     Application *application() const;
@@ -93,7 +94,7 @@ public slots:
     Document *item(int index) const;
 
 private:
-    QList<Document*> list;
+    QList<Document *> m_list;
 };
 //! [1]
 
@@ -111,7 +112,7 @@ class Application : public QObject
     Q_PROPERTY(bool visible READ isVisible WRITE setVisible)
 
 public:
-    Application(QObject *parent = 0);
+    explicit Application(QObject *parent = nullptr);
     DocumentList *documents() const;
 
     QString id() const { return objectName(); }
@@ -119,15 +120,14 @@ public:
     void setVisible(bool on);
     bool isVisible() const;
 
-    QTabWidget *window() const { return ui; }
+    QTabWidget *window() const { return m_ui.data(); }
 
 public slots:
     void quit();
 
 private:
-    DocumentList *docs;
-
-    QTabWidget *ui;
+    QScopedPointer <DocumentList> m_docs;
+    QScopedPointer <QTabWidget> m_ui;
 };
 //! [2]
 
@@ -136,35 +136,34 @@ Document::Document(DocumentList *list)
 : QObject(list)
 {
     QTabWidget *tabs = list->application()->window();
-    page = new QWidget(tabs);
-    page->setWindowTitle("Unnamed");
-    tabs->addTab(page, page->windowTitle());
+    m_page.reset(new QWidget(tabs));
+    m_page->setWindowTitle(tr("Unnamed"));
+    tabs->addTab(m_page.data(), m_page->windowTitle());
 
-    page->show();
+    m_page->show();
 }
 
 Document::~Document()
 {
-    delete page;
 }
 
 Application *Document::application() const
 {
-    return qobject_cast<DocumentList*>(parent())->application();
+    return qobject_cast<DocumentList *>(parent())->application();
 }
 
 QString Document::title() const
 {
-    return page->windowTitle();
+    return m_page->windowTitle();
 }
 
 void Document::setTitle(const QString &t)
 {
-    page->setWindowTitle(t);
+    m_page->setWindowTitle(t);
 
     QTabWidget *tabs = application()->window();
-    int index = tabs->indexOf(page);
-    tabs->setTabText(index, page->windowTitle());
+    int index = tabs->indexOf(m_page.data());
+    tabs->setTabText(index, m_page->windowTitle());
 }
 
 //! [3] //! [4]
@@ -175,64 +174,56 @@ DocumentList::DocumentList(Application *application)
 
 Application *DocumentList::application() const
 {
-    return qobject_cast<Application*>(parent());
+    return qobject_cast<Application *>(parent());
 }
 
 int DocumentList::count() const
 {
-    return list.count();
+    return m_list.count();
 }
 
 Document *DocumentList::item(int index) const
 {
-    if (index >= list.count())
-        return 0;
-
-    return list.at(index);
+    return m_list.value(index, nullptr);
 }
 
 Document *DocumentList::addDocument()
 {
     Document *document = new Document(this);
-    list.append(document);
+    m_list.append(document);
 
     return document;
 }
 
-
 //! [4] //! [5]
 Application::Application(QObject *parent)
-: QObject(parent), ui(0)
+: QObject(parent),
+  m_ui(new QTabWidget),
+  m_docs(new DocumentList(this))
 {
-    ui = new QTabWidget;
-
-    setObjectName("From QAxFactory");
-    docs = new DocumentList(this);
+    setObjectName(QStringLiteral("From QAxFactory"));
 }
 
 DocumentList *Application::documents() const
 {
-    return docs;
+    return m_docs.data();
 }
 
 void Application::setVisible(bool on)
 {
-    ui->setVisible(on);
+    m_ui->setVisible(on);
 }
 
 bool Application::isVisible() const
 {
-    return ui->isVisible();
+    return m_ui->isVisible();
 }
 
 void Application::quit()
 {
-    delete docs;
-    docs = 0;
-
-    delete ui;
-    ui = 0;
-    QTimer::singleShot(0, qApp, SLOT(quit()));
+    m_docs.reset();
+    m_ui.reset();
+    QTimer::singleShot(0 /*ms*/, qApp, &QCoreApplication::quit);
 }
 
 #include "main.moc"
@@ -246,8 +237,9 @@ QAXFACTORY_BEGIN("{edd3e836-f537-4c6f-be7d-6014c155cc7a}", "{b7da3de8-83bb-4bbe-
 QAXFACTORY_END()
 
 //! [6] //! [7]
-int main(int argc, char **argv)
+int main(int argc, char *argv[])
 {
+    QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QApplication app(argc, argv);
     app.setQuitOnLastWindowClosed(false);
 
@@ -256,12 +248,13 @@ int main(int argc, char **argv)
         return app.exec();
 
     // started by user
-    Application appobject(0);
-    appobject.setObjectName("From Application");
+    Application appobject;
+    appobject.setObjectName(QStringLiteral("From Application"));
 
     QAxFactory::startServer();
     QAxFactory::registerActiveObject(&appobject);
 
+    appobject.window()->setMinimumSize(300, 100);
     appobject.setVisible(true);
 
     QObject::connect(&app, &QGuiApplication::lastWindowClosed, &appobject, &Application::quit);
diff --git a/examples/activeqt/hierarchy/objects.cpp b/examples/activeqt/hierarchy/objects.cpp
index 1cb59ae..c0d0f0d 100644
--- a/examples/activeqt/hierarchy/objects.cpp
+++ b/examples/activeqt/hierarchy/objects.cpp
@@ -45,16 +45,16 @@
 /* Implementation of QParentWidget */
 //! [0]
 QParentWidget::QParentWidget(QWidget *parent)
-: QWidget(parent)
+: QWidget(parent),
+  m_vbox(new QVBoxLayout(this))
 {
-    vbox = new QVBoxLayout(this);
 }
 
 //! [0] //! [1]
 void QParentWidget::createSubWidget(const QString &name)
 {
     QSubWidget *sw = new QSubWidget(this, name);
-    vbox->addWidget(sw);
+    m_vbox->addWidget(sw);
     sw->setLabel(name);
     sw->show();
 }
@@ -62,7 +62,7 @@ void QParentWidget::createSubWidget(const QString &name)
 //! [1] //! [2]
 QSubWidget *QParentWidget::subWidget(const QString &name)
 {
-    return findChild<QSubWidget*>(name);
+    return findChild<QSubWidget *>(name);
 }
 
 //! [2]
@@ -81,27 +81,27 @@ QSubWidget::QSubWidget(QWidget *parent, const QString &name)
 
 void QSubWidget::setLabel(const QString &text)
 {
-    lbl = text;
+    m_label = text;
     setObjectName(text);
     update();
 }
 
 QString QSubWidget::label() const
 {
-    return lbl;
+    return m_label;
 }
 
 QSize QSubWidget::sizeHint() const
 {
     QFontMetrics fm(font());
-    return QSize(fm.width(lbl), fm.height());
+    return QSize(fm.width(m_label), fm.height());
 }
 
 void QSubWidget::paintEvent(QPaintEvent *)
 {
     QPainter painter(this);
     painter.setPen(palette().text().color());
-    painter.drawText(rect(), Qt::AlignCenter, lbl);
+    painter.drawText(rect(), Qt::AlignCenter, m_label);
 //! [3] //! [4]
 }
 //! [4]
diff --git a/examples/activeqt/hierarchy/objects.h b/examples/activeqt/hierarchy/objects.h
index 4ceea1f..49b1535 100644
--- a/examples/activeqt/hierarchy/objects.h
+++ b/examples/activeqt/hierarchy/objects.h
@@ -56,17 +56,17 @@ class QParentWidget : public QWidget
     Q_CLASSINFO("InterfaceID", "{4a30719d-d9c2-4659-9d16-67378209f822}");
     Q_CLASSINFO("EventsID", "{4a30719d-d9c2-4659-9d16-67378209f823}");
 public:
-    QParentWidget(QWidget *parent = 0);
+    explicit QParentWidget(QWidget *parent = nullptr);
 
     QSize sizeHint() const;
 
 public slots:
-    void createSubWidget( const QString &name );
+    void createSubWidget(const QString &name);
 
-    QSubWidget *subWidget( const QString &name );
+    QSubWidget *subWidget(const QString &name);
 
 private:
-    QVBoxLayout *vbox;
+    QVBoxLayout *m_vbox;
 };
 //! [0]
 
@@ -74,25 +74,25 @@ private:
 class QSubWidget : public QWidget
 {
     Q_OBJECT
-    Q_PROPERTY( QString label READ label WRITE setLabel )
+    Q_PROPERTY(QString label READ label WRITE setLabel)
 
     Q_CLASSINFO("ClassID", "{850652f4-8f71-4f69-b745-bce241ccdc30}");
     Q_CLASSINFO("InterfaceID", "{2d76cc2f-3488-417a-83d6-debff88b3c3f}");
     Q_CLASSINFO("ToSuperClass", "QSubWidget");
 
 public:
-    QSubWidget(QWidget *parent = 0, const QString &name = QString());
+    QSubWidget(QWidget *parent = nullptr, const QString &name = QString());
 
-    void setLabel( const QString &text );
+    void setLabel(const QString &text);
     QString label() const;
 
     QSize sizeHint() const;
 
 protected:
-    void paintEvent( QPaintEvent *e );
+    void paintEvent(QPaintEvent *e);
 
 private:
-    QString lbl;
+    QString m_label;
 };
 //! [1]
 
diff --git a/examples/activeqt/menus/main.cpp b/examples/activeqt/menus/main.cpp
index 0a4867c..12342cf 100644
--- a/examples/activeqt/menus/main.cpp
+++ b/examples/activeqt/menus/main.cpp
@@ -41,6 +41,7 @@
 #include "menus.h"
 #include <QApplication>
 #include <QAxFactory>
+#include <QScopedPointer>
 
 QAXFACTORY_BEGIN(
     "{ce947ee3-0403-4fdc-895a-4fe779394b46}", // type library ID
@@ -48,13 +49,13 @@ QAXFACTORY_BEGIN(
     QAXCLASS(QMenus)
 QAXFACTORY_END()
 
-int main( int argc, char **argv )
+int main(int argc, char *argv[])
 {
-    QApplication a( argc, argv );
+    QApplication a(argc, argv);
+    QScopedPointer<QWidget> window;
 
-    QWidget *window = 0;
-    if ( !QAxFactory::isServer() ) {
-        window = new QMenus();
+    if (!QAxFactory::isServer()) {
+        window.reset(new QMenus());
         window->show();
     }
 
diff --git a/examples/activeqt/menus/menus.cpp b/examples/activeqt/menus/menus.cpp
index 638bcd2..cde6291 100644
--- a/examples/activeqt/menus/menus.cpp
+++ b/examples/activeqt/menus/menus.cpp
@@ -56,52 +56,52 @@ QMenus::QMenus(QWidget *parent)
 
     QMenu *file = new QMenu(this);
 
-    action = new QAction(QPixmap((const char**)fileopen), "&Open", this);
+    action = new QAction(QPixmap((const char**)fileopen), tr("&Open"), this);
     action->setShortcut(tr("CTRL+O"));
     connect(action, &QAction::triggered, this, &QMenus::fileOpen);
     file->addAction(action);
 
-    action = new QAction(QPixmap((const char**)filesave),"&Save", this);
+    action = new QAction(QPixmap((const char**)filesave), tr("&Save"), this);
     action->setShortcut(tr("CTRL+S"));
     connect(action, &QAction::triggered, this, &QMenus::fileSave);
     file->addAction(action);
 
     QMenu *edit = new QMenu(this);
 
-    action = new QAction("&Normal", this);
+    action = new QAction(tr("&Normal"), this);
     action->setShortcut(tr("CTRL+N"));
-    action->setToolTip("Normal");
-    action->setStatusTip("Toggles Normal");
+    action->setToolTip(tr("Normal"));
+    action->setStatusTip(tr("Toggles Normal"));
     action->setCheckable(true);
     connect(action, &QAction::triggered, this, &QMenus::editNormal);
     edit->addAction(action);
 
-    action = new QAction("&Bold", this);
+    action = new QAction(tr("&Bold"), this);
     action->setShortcut(tr("CTRL+B"));
     action->setCheckable(true);
     connect(action, &QAction::triggered, this, &QMenus::editBold);
     edit->addAction(action);
 
-    action = new QAction("&Underline", this);
+    action = new QAction(tr("&Underline"), this);
     action->setShortcut(tr("CTRL+U"));
     action->setCheckable(true);
     connect(action, &QAction::triggered, this, &QMenus::editUnderline);
     edit->addAction(action);
 
     QMenu *advanced = new QMenu(this);
-    action = new QAction("&Font...", this);
+    action = new QAction(tr("&Font..."), this);
     connect(action, &QAction::triggered, this, &QMenus::editAdvancedFont);
     advanced->addAction(action);
 
-    action = new QAction("&Style...", this);
+    action = new QAction(tr("&Style..."), this);
     connect(action, &QAction::triggered, this, &QMenus::editAdvancedStyle);
     advanced->addAction(action);
 
-    edit->addMenu(advanced)->setText("&Advanced");
+    edit->addMenu(advanced)->setText(tr("&Advanced"));
 
     edit->addSeparator();
 
-    action = new QAction("Una&vailable", this);
+    action = new QAction(tr("Una&vailable"), this);
     action->setShortcut(tr("CTRL+V"));
     action->setCheckable(true);
     action->setEnabled(false);
@@ -110,65 +110,65 @@ QMenus::QMenus(QWidget *parent)
 
     QMenu *help = new QMenu(this);
 
-    action = new QAction("&About...", this);
+    action = new QAction(tr("&About..."), this);
     action->setShortcut(tr("F1"));
     connect(action, &QAction::triggered, this, &QMenus::helpAbout);
     help->addAction(action);
 
-    action = new QAction("&About Qt...", this);
+    action = new QAction(tr("&About Qt..."), this);
     connect(action, &QAction::triggered, this, &QMenus::helpAboutQt);
     help->addAction(action);
 
     if (!QAxFactory::isServer())
-        menuBar()->addMenu(file)->setText("&File");
-    menuBar()->addMenu(edit)->setText("&Edit");
-    menuBar()->addMenu(help)->setText("&Help");
+        menuBar()->addMenu(file)->setText(tr("&File"));
+    menuBar()->addMenu(edit)->setText(tr("&Edit"));
+    menuBar()->addMenu(help)->setText(tr("&Help"));
 
-    editor = new QTextEdit(this);
-    setCentralWidget(editor);
+    m_editor = new QTextEdit(this);
+    setCentralWidget(m_editor);
 
     statusBar();
 }
 
 void QMenus::fileOpen()
 {
-    editor->append("File Open selected.");
+    m_editor->append(tr("File Open selected."));
 }
 
 void QMenus::fileSave()
 {
-    editor->append("File Save selected.");
+    m_editor->append(tr("File Save selected."));
 }
 
 void QMenus::editNormal()
 {
-    editor->append("Edit Normal selected.");
+    m_editor->append(tr("Edit Normal selected."));
 }
 
 void QMenus::editBold()
 {
-    editor->append("Edit Bold selected.");
+    m_editor->append(tr("Edit Bold selected."));
 }
 
 void QMenus::editUnderline()
 {
-    editor->append("Edit Underline selected.");
+    m_editor->append(tr("Edit Underline selected."));
 }
 
 void QMenus::editAdvancedFont()
 {
-    editor->append("Edit Advanced Font selected.");
+    m_editor->append(tr("Edit Advanced Font selected."));
 }
 
 void QMenus::editAdvancedStyle()
 {
-    editor->append("Edit Advanced Style selected.");
+    m_editor->append(tr("Edit Advanced Style selected."));
 }
 
 void QMenus::helpAbout()
 {
-    QMessageBox::about(this, "About QMenus",
-                       "This example implements an in-place ActiveX control with menus and status messages.");
+    QMessageBox::about(this, tr("About QMenus"),
+                       tr("This example implements an in-place ActiveX control with menus and status messages."));
 }
 
 void QMenus::helpAboutQt()
diff --git a/examples/activeqt/menus/menus.h b/examples/activeqt/menus/menus.h
index 480a367..dc45b86 100644
--- a/examples/activeqt/menus/menus.h
+++ b/examples/activeqt/menus/menus.h
@@ -55,7 +55,7 @@ class QMenus : public QMainWindow
     Q_CLASSINFO("EventsID",    "{13eca64b-ee2a-4f3c-aa04-5d9d975979a7}")
 
 public:
-    QMenus(QWidget *parent = 0);
+    explicit QMenus(QWidget *parent = nullptr);
 
 public slots:
     void fileOpen();
@@ -72,7 +72,7 @@ public slots:
     void helpAboutQt();
 
 private:
-    QTextEdit *editor;
+    QTextEdit *m_editor;
 };
 
 #endif // MENUS_H
diff --git a/examples/activeqt/multiple/ax1.h b/examples/activeqt/multiple/ax1.h
index 286645f..2cd6b33 100644
--- a/examples/activeqt/multiple/ax1.h
+++ b/examples/activeqt/multiple/ax1.h
@@ -54,18 +54,19 @@ class QAxWidget1 : public QWidget
 
     Q_PROPERTY(QColor fillColor READ fillColor WRITE setFillColor)
 public:
-    QAxWidget1(QWidget *parent = 0)
-        : QWidget(parent), fill_color(Qt::red)
+    explicit QAxWidget1(QWidget *parent = nullptr)
+        : QWidget(parent), m_fillColor(Qt::red)
     {
     }
 
     QColor fillColor() const
     {
-        return fill_color;
+        return m_fillColor;
     }
+
     void setFillColor(const QColor &fc)
     {
-        fill_color = fc;
+        m_fillColor = fc;
         repaint();
     }
 
@@ -75,11 +76,11 @@ protected:
         QPainter paint(this);
         QRect r = rect();
         r.adjust(10, 10, -10, -10);
-        paint.fillRect(r, fill_color);
+        paint.fillRect(r, m_fillColor);
     }
 
 private:
-    QColor fill_color;
+    QColor m_fillColor;
 };
 //! [0]
 
diff --git a/examples/activeqt/multiple/ax2.h b/examples/activeqt/multiple/ax2.h
index 8b04653..211878c 100644
--- a/examples/activeqt/multiple/ax2.h
+++ b/examples/activeqt/multiple/ax2.h
@@ -55,38 +55,39 @@ class QAxWidget2 : public QWidget
     Q_CLASSINFO("StockEvents", "yes")
     Q_CLASSINFO("Insertable", "yes")
 
-    Q_PROPERTY( int lineWidth READ lineWidth WRITE setLineWidth )
+    Q_PROPERTY(int lineWidth READ lineWidth WRITE setLineWidth)
 public:
-    QAxWidget2(QWidget *parent = 0)
-        : QWidget(parent), line_width( 1 )
+    explicit QAxWidget2(QWidget *parent = nullptr)
+        : QWidget(parent), m_lineWidth(1)
     {
     }
 
     int lineWidth() const
     {
-        return line_width;
+        return m_lineWidth;
     }
-    void setLineWidth( int lw )
+
+    void setLineWidth(int lw)
     {
-        line_width = lw;
+        m_lineWidth = lw;
         repaint();
     }
 
 protected:
-    void paintEvent( QPaintEvent *e )
+    void paintEvent(QPaintEvent *e)
     {
-        QPainter paint( this );
+        QPainter paint(this);
         QPen pen = paint.pen();
-        pen.setWidth( line_width );
-        paint.setPen( pen );
+        pen.setWidth(m_lineWidth);
+        paint.setPen(pen);
 
         QRect r = rect();
-        r.adjust( 10, 10, -10, -10 );
-        paint.drawEllipse( r );
+        r.adjust(10, 10, -10, -10);
+        paint.drawEllipse(r);
     }
 
 private:
-    int line_width;
+    int m_lineWidth;
 };
 //! [0]
 
diff --git a/examples/activeqt/opengl/glbox.cpp b/examples/activeqt/opengl/glbox.cpp
index 04c854c..3c6862f 100644
--- a/examples/activeqt/opengl/glbox.cpp
+++ b/examples/activeqt/opengl/glbox.cpp
@@ -62,12 +62,12 @@
   Create a GLBox widget
 */
 
-GLBox::GLBox( QWidget* parent, const char* name )
-    : QGLWidget( parent )
+GLBox::GLBox(QWidget *parent, const char *name)
+    : QGLWidget(parent)
 {
-    xRot = yRot = zRot = 0.0;           // default object rotation
-    scale = 1.25;                       // default object scale
-    object = 0;
+    m_xRot = m_yRot = m_zRot = 0.0;       // default object rotation
+    m_scale = 1.25;                       // default object scale
+    m_object = 0;
 }
 
 
@@ -79,8 +79,8 @@ GLBox::~GLBox()
 {
     makeCurrent();
 
-    if (object)
-        glDeleteLists( object, 1 );
+    if (m_object)
+        glDeleteLists(m_object, 1);
 }
 
 
@@ -91,17 +91,17 @@ GLBox::~GLBox()
 
 void GLBox::paintGL()
 {
-    glClear( GL_COLOR_BUFFER_BIT );
+    glClear(GL_COLOR_BUFFER_BIT);
 
     glLoadIdentity();
-    glTranslatef( 0.0, 0.0, -10.0 );
-    glScalef( scale, scale, scale );
+    glTranslatef(0.0, 0.0, -10.0);
+    glScalef(m_scale, m_scale, m_scale);
 
-    glRotatef( xRot, 1.0, 0.0, 0.0 );
-    glRotatef( yRot, 0.0, 1.0, 0.0 );
-    glRotatef( zRot, 0.0, 0.0, 1.0 );
+    glRotatef(m_xRot, 1.0, 0.0, 0.0);
+    glRotatef(m_yRot, 0.0, 1.0, 0.0);
+    glRotatef(m_zRot, 0.0, 0.0, 1.0);
 
-    glCallList( object );
+    glCallList(m_object);
 }
 
 
@@ -114,8 +114,8 @@ void GLBox::initializeGL()
     initializeOpenGLFunctions();
 
     qglClearColor(Qt::black);           // Let OpenGL clear to black
-    object = makeObject();              // Generate an OpenGL display list
-    glShadeModel( GL_FLAT );
+    m_object = makeObject();            // Generate an OpenGL display list
+    glShadeModel(GL_FLAT);
 }
 
 
@@ -124,13 +124,13 @@ void GLBox::initializeGL()
   Set up the OpenGL view port, matrix mode, etc.
 */
 
-void GLBox::resizeGL( int w, int h )
+void GLBox::resizeGL(int w, int h)
 {
-    glViewport( 0, 0, (GLint)w, (GLint)h );
-    glMatrixMode( GL_PROJECTION );
+    glViewport(0, 0, (GLint)w, (GLint)h);
+    glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
-    glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
-    glMatrixMode( GL_MODELVIEW );
+    glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 15.0);
+    glMatrixMode(GL_MODELVIEW);
 }
 
 
@@ -142,33 +142,33 @@ GLuint GLBox::makeObject()
 {
     GLuint list;
 
-    list = glGenLists( 1 );
+    list = glGenLists(1);
 
-    glNewList( list, GL_COMPILE );
+    glNewList(list, GL_COMPILE);
 
     qglColor(Qt::white);                      // Shorthand for glColor3f or glIndex
 
-    glLineWidth( 2.0 );
+    glLineWidth(2.0);
 
-    glBegin( GL_LINE_LOOP );
-    glVertex3f(  1.0,  0.5, -0.4 );
-    glVertex3f(  1.0, -0.5, -0.4 );
-    glVertex3f( -1.0, -0.5, -0.4 );
-    glVertex3f( -1.0,  0.5, -0.4 );
+    glBegin(GL_LINE_LOOP);
+    glVertex3f( 1.0,  0.5, -0.4);
+    glVertex3f( 1.0, -0.5, -0.4);
+    glVertex3f(-1.0, -0.5, -0.4);
+    glVertex3f(-1.0,  0.5, -0.4);
     glEnd();
 
-    glBegin( GL_LINE_LOOP );
-    glVertex3f(  1.0,  0.5, 0.4 );
-    glVertex3f(  1.0, -0.5, 0.4 );
-    glVertex3f( -1.0, -0.5, 0.4 );
-    glVertex3f( -1.0,  0.5, 0.4 );
+    glBegin(GL_LINE_LOOP);
+    glVertex3f( 1.0,  0.5, 0.4);
+    glVertex3f( 1.0, -0.5, 0.4);
+    glVertex3f(-1.0, -0.5, 0.4);
+    glVertex3f(-1.0,  0.5, 0.4);
     glEnd();
 
-    glBegin( GL_LINES );
-    glVertex3f(  1.0,  0.5, -0.4 );   glVertex3f(  1.0,  0.5, 0.4 );
-    glVertex3f(  1.0, -0.5, -0.4 );   glVertex3f(  1.0, -0.5, 0.4 );
-    glVertex3f( -1.0, -0.5, -0.4 );   glVertex3f( -1.0, -0.5, 0.4 );
-    glVertex3f( -1.0,  0.5, -0.4 );   glVertex3f( -1.0,  0.5, 0.4 );
+    glBegin(GL_LINES);
+    glVertex3f( 1.0,  0.5, -0.4);   glVertex3f( 1.0,  0.5, 0.4);
+    glVertex3f( 1.0, -0.5, -0.4);   glVertex3f( 1.0, -0.5, 0.4);
+    glVertex3f(-1.0, -0.5, -0.4);   glVertex3f(-1.0, -0.5, 0.4);
+    glVertex3f(-1.0,  0.5, -0.4);   glVertex3f(-1.0,  0.5, 0.4);
     glEnd();
 
     glEndList();
@@ -181,9 +181,9 @@ GLuint GLBox::makeObject()
   Set the rotation angle of the object to \e degrees around the X axis.
 */
 
-void GLBox::setXRotation( int degrees )
+void GLBox::setXRotation(int degrees)
 {
-    xRot = (GLfloat)(degrees % 360);
+    m_xRot = (GLfloat)(degrees % 360);
     updateGL();
 }
 
@@ -192,9 +192,9 @@ void GLBox::setXRotation( int degrees )
   Set the rotation angle of the object to \e degrees around the Y axis.
 */
 
-void GLBox::setYRotation( int degrees )
+void GLBox::setYRotation(int degrees)
 {
-    yRot = (GLfloat)(degrees % 360);
+    m_yRot = (GLfloat)(degrees % 360);
     updateGL();
 }
 
@@ -203,9 +203,9 @@ void GLBox::setYRotation( int degrees )
   Set the rotation angle of the object to \e degrees around the Z axis.
 */
 
-void GLBox::setZRotation( int degrees )
+void GLBox::setZRotation(int degrees)
 {
-    zRot = (GLfloat)(degrees % 360);
+    m_zRot = (GLfloat)(degrees % 360);
     updateGL();
 }
 
@@ -215,12 +215,12 @@ class ObjectSafetyImpl : public QAxAggregated,
 {
 public:
 //! [1] //! [2]
-    ObjectSafetyImpl() {}
+    explicit ObjectSafetyImpl() {}
 
-    long queryInterface( const QUuid &iid, void **iface )
+    long queryInterface(const QUuid &iid, void **iface)
     {
-        *iface = 0;
-        if ( iid == IID_IObjectSafety )
+        *iface = nullptr;
+        if (iid == IID_IObjectSafety)
             *iface = (IObjectSafety*)this;
         else
             return E_NOINTERFACE;
@@ -233,13 +233,14 @@ public:
     QAXAGG_IUNKNOWN;
 
 //! [3] //! [4]
-    HRESULT WINAPI GetInterfaceSafetyOptions( REFIID riid, DWORD *pdwSupportedOptions, DWORD *pdwEnabledOptions )
+    HRESULT WINAPI GetInterfaceSafetyOptions(REFIID riid, DWORD *pdwSupportedOptions, DWORD *pdwEnabledOptions)
     {
         *pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER;
         *pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER;
         return S_OK;
     }
-    HRESULT WINAPI SetInterfaceSafetyOptions( REFIID riid, DWORD pdwSupportedOptions, DWORD pdwEnabledOptions )
+
+    HRESULT WINAPI SetInterfaceSafetyOptions(REFIID riid, DWORD pdwSupportedOptions, DWORD pdwEnabledOptions)
     {
         return S_OK;
     }
diff --git a/examples/activeqt/opengl/glbox.h b/examples/activeqt/opengl/glbox.h
index 5c09912..a1b854a 100644
--- a/examples/activeqt/opengl/glbox.h
+++ b/examples/activeqt/opengl/glbox.h
@@ -63,32 +63,28 @@ class GLBox : public QGLWidget,
     //! [0] //! [1]
 
 public:
-
-    GLBox( QWidget* parent, const char* name = 0 );
-    ~GLBox();
-
+    explicit GLBox(QWidget *parent, const char *name = nullptr);
+    virtual ~GLBox();
     QAxAggregated *createAggregate();
 
 public slots:
-
-    void                setXRotation( int degrees );
+    void                setXRotation(int degrees);
 //! [1]
-    void                setYRotation( int degrees );
-    void                setZRotation( int degrees );
+    void                setYRotation(int degrees);
+    void                setZRotation(int degrees);
 
 protected:
-
     void                initializeGL();
     void                paintGL();
-    void                resizeGL( int w, int h );
-
+    void                resizeGL(int w, int h);
     virtual GLuint      makeObject();
 
 private:
-
-    GLuint object;
-    GLfloat xRot, yRot, zRot, scale;
-
+    GLuint  m_object;
+    GLfloat m_xRot;
+    GLfloat m_yRot;
+    GLfloat m_zRot;
+    GLfloat m_scale;
 };
 
 #endif // GLBOX_H
diff --git a/examples/activeqt/opengl/globjwin.cpp b/examples/activeqt/opengl/globjwin.cpp
index 367ede2..56b0902 100644
--- a/examples/activeqt/opengl/globjwin.cpp
+++ b/examples/activeqt/opengl/globjwin.cpp
@@ -49,62 +49,61 @@
 #include <QApplication>
 
 
-GLObjectWindow::GLObjectWindow(QWidget* parent)
+GLObjectWindow::GLObjectWindow(QWidget *parent)
     : QWidget(parent)
 {
-
     // Create a menu
-    QMenu *file = new QMenu( this );
-    file->addAction( "Exit",  qApp, SLOT(quit())/*, CTRL+Key_Q*/);
+    QMenu *file = new QMenu(this);
+    file->addAction(tr("Exit"), qApp, &QApplication::quit);
 
     // Create a menu bar
-    QMenuBar *m = new QMenuBar( this );
-    m->addMenu(file)->setText("&File");
+    QMenuBar *m = new QMenuBar(this);
+    m->addMenu(file)->setText(tr("&File"));
 
     // Create a nice frame to put around the OpenGL widget
-    QFrame* f = new QFrame(this);
-    f->setFrameStyle( QFrame::Sunken | QFrame::Panel );
-    f->setLineWidth( 2 );
+    QFrame *f = new QFrame(this);
+    f->setFrameStyle(QFrame::Sunken | QFrame::Panel);
+    f->setLineWidth(2);
 
     // Create our OpenGL widget
-    GLBox* c = new GLBox( f, "glbox");
+    GLBox *c = new GLBox(f, "glbox");
 
     // Create the three sliders; one for each rotation axis
-    QSlider* x = new QSlider(Qt::Vertical, this);
+    QSlider *x = new QSlider(Qt::Vertical, this);
     x->setMaximum(360);
     x->setPageStep(60);
-    x->setTickPosition( QSlider::TicksLeft );
-    QObject::connect( x, SIGNAL(valueChanged(int)),c,SLOT(setXRotation(int)) );
+    x->setTickPosition(QSlider::TicksLeft);
+    connect(x, &QSlider::valueChanged, c, &GLBox::setXRotation);
 
-    QSlider* y = new QSlider(Qt::Vertical, this);
+    QSlider *y = new QSlider(Qt::Vertical, this);
     y->setMaximum(360);
     y->setPageStep(60);
-    y->setTickPosition( QSlider::TicksLeft );
-    QObject::connect( y, SIGNAL(valueChanged(int)),c,SLOT(setYRotation(int)) );
+    y->setTickPosition(QSlider::TicksLeft);
+    connect(y, &QSlider::valueChanged, c, &GLBox::setYRotation);
 
-    QSlider* z = new QSlider(Qt::Vertical, this);
+    QSlider *z = new QSlider(Qt::Vertical, this);
     z->setMaximum(360);
     z->setPageStep(60);
-    z->setTickPosition( QSlider::TicksLeft );
-    QObject::connect( z, SIGNAL(valueChanged(int)),c,SLOT(setZRotation(int)) );
+    z->setTickPosition(QSlider::TicksLeft);
+    connect(z, &QSlider::valueChanged, c, &GLBox::setZRotation);
 
     // Now that we have all the widgets, put them into a nice layout
 
     // Top level layout, puts the sliders to the left of the frame/GL widget
-    QHBoxLayout* hlayout = new QHBoxLayout(this);
+    QHBoxLayout *hlayout = new QHBoxLayout(this);
 
     // Put the sliders on top of each other
-    QVBoxLayout* vlayout = new QVBoxLayout();
-    vlayout->addWidget( x );
-    vlayout->addWidget( y );
-    vlayout->addWidget( z );
+    QVBoxLayout *vlayout = new QVBoxLayout();
+    vlayout->addWidget(x);
+    vlayout->addWidget(y);
+    vlayout->addWidget(z);
 
     // Put the GL widget inside the frame
-    QHBoxLayout* flayout = new QHBoxLayout(f);
+    QHBoxLayout *flayout = new QHBoxLayout(f);
     flayout->setMargin(0);
-    flayout->addWidget( c, 1 );
+    flayout->addWidget(c, 1);
 
-    hlayout->setMenuBar( m );
-    hlayout->addLayout( vlayout );
-    hlayout->addWidget( f, 1 );
+    hlayout->setMenuBar(m);
+    hlayout->addLayout(vlayout);
+    hlayout->addWidget(f, 1);
 }
diff --git a/examples/activeqt/opengl/globjwin.h b/examples/activeqt/opengl/globjwin.h
index cd9a8d9..64006b1 100644
--- a/examples/activeqt/opengl/globjwin.h
+++ b/examples/activeqt/opengl/globjwin.h
@@ -55,7 +55,7 @@ class GLObjectWindow : public QWidget
     Q_OBJECT
 
 public:
-    GLObjectWindow(QWidget *parent = 0);
+    explicit GLObjectWindow(QWidget *parent = nullptr);
 };
 
 #endif
diff --git a/examples/activeqt/opengl/main.cpp b/examples/activeqt/opengl/main.cpp
index 1c8a79b..45a90e1 100644
--- a/examples/activeqt/opengl/main.cpp
+++ b/examples/activeqt/opengl/main.cpp
@@ -65,19 +65,20 @@ QAXFACTORY_END()
   The main program is here.
 */
 
-int main( int argc, char **argv )
+int main(int argc, char *argv[])
 {
-    QApplication::setColorSpec( QApplication::CustomColor );
+    QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+    QApplication::setColorSpec(QApplication::CustomColor);
     QApplication a(argc,argv);
 
     if (QOpenGLContext::openGLModuleType() != QOpenGLContext::LibGL) {
-        qWarning( "This system does not support OpenGL. Exiting." );
+        qWarning("This system does not support OpenGL. Exiting.");
         return -1;
     }
 
-    if ( !QAxFactory::isServer() ) {
+    if (!QAxFactory::isServer()) {
         GLObjectWindow w;
-        w.resize( 400, 350 );
+        w.resize(400, 350);
         w.show();
         return a.exec();
 //! [1] //! [2]
diff --git a/examples/activeqt/qutlook/addressview.cpp b/examples/activeqt/qutlook/addressview.cpp
index b92c793..283da3a 100644
--- a/examples/activeqt/qutlook/addressview.cpp
+++ b/examples/activeqt/qutlook/addressview.cpp
@@ -46,8 +46,8 @@
 class AddressBookModel : public QAbstractListModel
 {
 public:
-    AddressBookModel(AddressView *parent);
-    ~AddressBookModel();
+    explicit AddressBookModel(AddressView *parent);
+    virtual ~AddressBookModel();
 
     int rowCount(const QModelIndex &parent = QModelIndex()) const;
     int columnCount(const QModelIndex &parent) const;
@@ -97,13 +97,13 @@ int AddressBookModel::rowCount(const QModelIndex &) const
     return contactItems ? contactItems->Count() : 0;
 }
 
-int AddressBookModel::columnCount(const QModelIndex &parent) const
+int AddressBookModel::columnCount(const QModelIndex & /*parent*/) const
 {
     return 4;
 }
 
 //! [3] //! [4]
-QVariant AddressBookModel::headerData(int section, Qt::Orientation orientation, int role) const
+QVariant AddressBookModel::headerData(int section, Qt::Orientation /*orientation*/, int role) const
 {
     if (role != Qt::DisplayRole)
         return QVariant();
@@ -182,69 +182,68 @@ void AddressBookModel::update()
     endResetModel();
 }
 
-
 //! [8] //! [9]
 AddressView::AddressView(QWidget *parent)
 : QWidget(parent)
 {
     QGridLayout *mainGrid = new QGridLayout(this);
 
-    QLabel *liFirstName = new QLabel("First &Name", this);
-    liFirstName->resize(liFirstName->sizeHint());
-    mainGrid->addWidget(liFirstName, 0, 0);
+    QLabel *firstNameLabel = new QLabel(tr("First &Name"), this);
+    firstNameLabel->resize(firstNameLabel->sizeHint());
+    mainGrid->addWidget(firstNameLabel, 0, 0);
 
-    QLabel *liLastName = new QLabel("&Last Name", this);
-    liLastName->resize(liLastName->sizeHint());
-    mainGrid->addWidget(liLastName, 0, 1);
+    QLabel *lastNameLabel = new QLabel(tr("&Last Name"), this);
+    lastNameLabel->resize(lastNameLabel->sizeHint());
+    mainGrid->addWidget(lastNameLabel, 0, 1);
 
-    QLabel *liAddress = new QLabel("Add&ress", this);
-    liAddress->resize(liAddress->sizeHint());
-    mainGrid->addWidget(liAddress, 0, 2);
+    QLabel *addressLabel = new QLabel(tr("Add&ress"), this);
+    addressLabel->resize(addressLabel->sizeHint());
+    mainGrid->addWidget(addressLabel, 0, 2);
 
-    QLabel *liEMail = new QLabel("&E-Mail", this);
-    liEMail->resize(liEMail->sizeHint());
-    mainGrid->addWidget(liEMail, 0, 3);
+    QLabel *emailLabel = new QLabel(tr("&E-Mail"), this);
+    emailLabel->resize(emailLabel->sizeHint());
+    mainGrid->addWidget(emailLabel, 0, 3);
 
-    add = new QPushButton("A&dd", this);
-    add->resize(add->sizeHint());
-    mainGrid->addWidget(add, 0, 4);
-    connect(add, SIGNAL(clicked()), this, SLOT(addEntry()));
+    m_addButton = new QPushButton(tr("A&dd"), this);
+    m_addButton->resize(m_addButton->sizeHint());
+    mainGrid->addWidget(m_addButton, 0, 4);
+    connect(m_addButton, &QPushButton::clicked, this, &AddressView::addEntry);
 
-    iFirstName = new QLineEdit(this);
-    iFirstName->resize(iFirstName->sizeHint());
-    mainGrid->addWidget(iFirstName, 1, 0);
-    liFirstName->setBuddy(iFirstName);
+    m_firstName = new QLineEdit(this);
+    m_firstName->resize(m_firstName->sizeHint());
+    mainGrid->addWidget(m_firstName, 1, 0);
+    firstNameLabel->setBuddy(m_firstName);
 
-    iLastName = new QLineEdit(this);
-    iLastName->resize(iLastName->sizeHint());
-    mainGrid->addWidget(iLastName, 1, 1);
-    liLastName->setBuddy(iLastName);
+    m_lastName = new QLineEdit(this);
+    m_lastName->resize(m_lastName->sizeHint());
+    mainGrid->addWidget(m_lastName, 1, 1);
+    lastNameLabel->setBuddy(m_lastName);
 
-    iAddress = new QLineEdit(this);
-    iAddress->resize(iAddress->sizeHint());
-    mainGrid->addWidget(iAddress, 1, 2);
-    liAddress->setBuddy(iAddress);
+    m_address = new QLineEdit(this);
+    m_address->resize(m_address->sizeHint());
+    mainGrid->addWidget(m_address, 1, 2);
+    addressLabel->setBuddy(m_address);
 
-    iEMail = new QLineEdit(this);
-    iEMail->resize(iEMail->sizeHint());
-    mainGrid->addWidget(iEMail, 1, 3);
-    liEMail->setBuddy(iEMail);
+    m_email = new QLineEdit(this);
+    m_email->resize(m_email->sizeHint());
+    mainGrid->addWidget(m_email, 1, 3);
+    emailLabel->setBuddy(m_email);
 
-    change = new QPushButton("&Change", this);
-    change->resize(change->sizeHint());
-    mainGrid->addWidget(change, 1, 4);
-    connect(change, SIGNAL(clicked()), this, SLOT(changeEntry()));
+    m_changeButton = new QPushButton(tr("&Change"), this);
+    m_changeButton->resize(m_changeButton->sizeHint());
+    mainGrid->addWidget(m_changeButton, 1, 4);
+    connect(m_changeButton, &QPushButton::clicked, this, &AddressView::changeEntry);
 
-    treeView = new QTreeView(this);
-    treeView->setSelectionMode(QTreeView::SingleSelection);
-    treeView->setRootIsDecorated(false);
+    m_treeView = new QTreeView(this);
+    m_treeView->setSelectionMode(QTreeView::SingleSelection);
+    m_treeView->setRootIsDecorated(false);
 
     model = new AddressBookModel(this);
-    treeView->setModel(model);
+    m_treeView->setModel(model);
 
-    connect(treeView->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)), this, SLOT(itemSelected(QModelIndex)));
+    connect(m_treeView->selectionModel(), &QItemSelectionModel::currentChanged, this, &AddressView::itemSelected);
 
-    mainGrid->addWidget(treeView, 2, 0, 1, 5);
+    mainGrid->addWidget(m_treeView, 2, 0, 1, 5);
 }
 
 void AddressView::updateOutlook()
@@ -254,23 +253,23 @@ void AddressView::updateOutlook()
 
 void AddressView::addEntry()
 {
-    if (!iFirstName->text().isEmpty() || !iLastName->text().isEmpty() ||
-         !iAddress->text().isEmpty() || !iEMail->text().isEmpty()) {
-        model->addItem(iFirstName->text(), iFirstName->text(), iAddress->text(), iEMail->text());
+    if (!m_firstName->text().isEmpty() || !m_lastName->text().isEmpty() ||
+         !m_address->text().isEmpty() || !m_email->text().isEmpty()) {
+        model->addItem(m_firstName->text(), m_lastName->text(), m_address->text(), m_email->text());
     }
 
-    iFirstName->setText("");
-    iLastName->setText("");
-    iAddress->setText("");
-    iEMail->setText("");
+    m_firstName->clear();
+    m_lastName->clear();
+    m_address->clear();
+    m_email->clear();
 }
 
 void AddressView::changeEntry()
 {
-    QModelIndex current = treeView->currentIndex();
+    QModelIndex current = m_treeView->currentIndex();
 
     if (current.isValid())
-        model->changeItem(current, iFirstName->text(), iLastName->text(), iAddress->text(), iEMail->text());
+        model->changeItem(current, m_firstName->text(), m_lastName->text(), m_address->text(), m_email->text());
 }
 
 //! [9] //! [10]
@@ -279,10 +278,10 @@ void AddressView::itemSelected(const QModelIndex &index)
     if (!index.isValid())
         return;
 
-    QAbstractItemModel *model = treeView->model();
-    iFirstName->setText(model->data(model->index(index.row(), 0)).toString());
-    iLastName->setText(model->data(model->index(index.row(), 1)).toString());
-    iAddress->setText(model->data(model->index(index.row(), 2)).toString());
-    iEMail->setText(model->data(model->index(index.row(), 3)).toString());
+    QAbstractItemModel *model = m_treeView->model();
+    m_firstName->setText(model->data(model->index(index.row(), 0)).toString());
+    m_lastName->setText(model->data(model->index(index.row(), 1)).toString());
+    m_address->setText(model->data(model->index(index.row(), 2)).toString());
+    m_email->setText(model->data(model->index(index.row(), 3)).toString());
 }
 //! [10]
diff --git a/examples/activeqt/qutlook/addressview.h b/examples/activeqt/qutlook/addressview.h
index c29c537..6b54629 100644
--- a/examples/activeqt/qutlook/addressview.h
+++ b/examples/activeqt/qutlook/addressview.h
@@ -57,7 +57,7 @@ class AddressView : public QWidget
     Q_OBJECT
 
 public:
-    AddressView(QWidget *parent = 0);
+    explicit AddressView(QWidget *parent = nullptr);
 
 protected slots:
     void addEntry();
@@ -69,9 +69,13 @@ protected slots:
 protected:
     AddressBookModel *model;
 
-    QTreeView *treeView;
-    QPushButton *add, *change;
-    QLineEdit *iFirstName, *iLastName, *iAddress, *iEMail;
+    QTreeView *m_treeView;
+    QPushButton *m_addButton;
+    QPushButton *m_changeButton;
+    QLineEdit *m_firstName;
+    QLineEdit *m_lastName;
+    QLineEdit *m_address;
+    QLineEdit *m_email;
 };
 //! [0]
 
diff --git a/examples/activeqt/qutlook/main.cpp b/examples/activeqt/qutlook/main.cpp
index 4cb6fa5..b7b2199 100644
--- a/examples/activeqt/qutlook/main.cpp
+++ b/examples/activeqt/qutlook/main.cpp
@@ -42,12 +42,12 @@
 #include "addressview.h"
 #include <QApplication>
 
-int main(int argc, char ** argv)
+int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
 
     AddressView view;
-    view.setWindowTitle("Qt Example - Looking at Outlook");
+    view.setWindowTitle(QObject::tr("Qt Example - Looking at Outlook"));
     view.show();
 
     return a.exec();
diff --git a/examples/activeqt/simple/main.cpp b/examples/activeqt/simple/main.cpp
index 4e855b3..a5348f9 100644
--- a/examples/activeqt/simple/main.cpp
+++ b/examples/activeqt/simple/main.cpp
@@ -54,33 +54,34 @@ class QSimpleAX : public QWidget, public QAxBindable
     Q_CLASSINFO("ClassID",     "{DF16845C-92CD-4AAB-A982-EB9840E74669}")
     Q_CLASSINFO("InterfaceID", "{616F620B-91C5-4410-A74E-6B81C76FFFE0}")
     Q_CLASSINFO("EventsID",    "{E1816BBA-BF5D-4A31-9855-D6BA432055FF}")
-    Q_PROPERTY( QString text READ text WRITE setText )
-    Q_PROPERTY( int value READ value WRITE setValue )
+    Q_PROPERTY(QString text READ text WRITE setText)
+    Q_PROPERTY(int value READ value WRITE setValue)
 public:
-    QSimpleAX(QWidget *parent = 0)
+    explicit QSimpleAX(QWidget *parent = nullptr)
     : QWidget(parent)
     {
-        QVBoxLayout *vbox = new QVBoxLayout( this );
+        QVBoxLayout *vbox = new QVBoxLayout(this);
 
-        slider = new QSlider( Qt::Horizontal, this );
-        LCD = new QLCDNumber( 3, this );
-        edit = new QLineEdit( this );
+        m_slider = new QSlider(Qt::Horizontal, this);
+        m_LCD = new QLCDNumber(3, this);
+        m_edit = new QLineEdit(this);
 
-        connect( slider, &QAbstractSlider::valueChanged, this, &QSimpleAX::setValue );
-        connect( edit, &QLineEdit::textChanged, this, &QSimpleAX::setText );
+        connect(m_slider, &QAbstractSlider::valueChanged, this, &QSimpleAX::setValue);
+        connect(m_edit, &QLineEdit::textChanged, this, &QSimpleAX::setText);
 
-        vbox->addWidget( slider );
-        vbox->addWidget( LCD );
-        vbox->addWidget( edit );
+        vbox->addWidget(m_slider);
+        vbox->addWidget(m_LCD);
+        vbox->addWidget(m_edit);
     }
 
     QString text() const
     {
-        return edit->text();
+        return m_edit->text();
     }
+
     int value() const
     {
-        return slider->value();
+        return m_slider->value();
     }
 
 signals:
@@ -89,41 +90,42 @@ signals:
     void textChanged(const QString&);
 
 public slots:
-    void setText( const QString &string )
+    void setText(const QString &string)
     {
-        if ( !requestPropertyChange( "text" ) )
+        if (!requestPropertyChange("text"))
             return;
 
-        edit->blockSignals( true );
-        edit->setText( string );
-        edit->blockSignals( false );
+        QSignalBlocker blocker(m_edit);
+        m_edit->setText(string);
         emit someSignal();
-        emit textChanged( string );
+        emit textChanged(string);
 
-        propertyChanged( "text" );
+        propertyChanged("text");
     }
+
     void about()
     {
         QMessageBox::information( this, "About QSimpleAX", "This is a Qt widget, and this slot has been\n"
                                                           "called through ActiveX/OLE automation!" );
     }
-    void setValue( int i )
+
+    void setValue(int i)
     {
-        if ( !requestPropertyChange( "value" ) )
+        if (!requestPropertyChange("value"))
             return;
-        slider->blockSignals( true );
-        slider->setValue( i );
-        slider->blockSignals( false );
-        LCD->display( i );
-        emit valueChanged( i );
 
-        propertyChanged( "value" );
+        QSignalBlocker blocker(m_slider);
+        m_slider->setValue(i);
+        m_LCD->display(i);
+        emit valueChanged(i);
+
+        propertyChanged("value");
     }
 
 private:
-    QSlider *slider;
-    QLCDNumber *LCD;
-    QLineEdit *edit;
+    QSlider *m_slider;
+    QLCDNumber *m_LCD;
+    QLineEdit *m_edit;
 };
 
 //! [0]
diff --git a/examples/activeqt/simpleqml/main.cpp b/examples/activeqt/simpleqml/main.cpp
index 8983b22..bd7dd33 100644
--- a/examples/activeqt/simpleqml/main.cpp
+++ b/examples/activeqt/simpleqml/main.cpp
@@ -50,19 +50,15 @@ class Controller : public QObject
     Q_PROPERTY(qreal value READ value WRITE setValue NOTIFY valueChanged)
     Q_PROPERTY(QColor color READ color NOTIFY valueChanged)
 public:
-    explicit Controller(QWidget *parent = 0) :
-        QObject(parent),
-        m_value(0)
+    explicit Controller(QWidget *parent = nullptr) :
+        QObject(parent)
     { }
 
     qreal value() const { return m_value; }
 
     void setValue(qreal value)
     {
-        if (value < 0) value = 0;
-        if (value > 1) value = 1;
-
-        m_value = value;
+        m_value = qBound(qreal(0.0), value, qreal(1.0));
         valueChanged();
     }
 
@@ -84,7 +80,7 @@ signals:
     void valueChanged();
 
 private:
-    qreal m_value;
+    qreal m_value = 0;
 };
 
 class QSimpleQmlAx : public QMainWindow
@@ -94,7 +90,7 @@ class QSimpleQmlAx : public QMainWindow
     Q_CLASSINFO("InterfaceID", "{A5EC7D99-CEC9-4BD1-8336-ED15A579B185}")
     Q_CLASSINFO("EventsID", "{5BBFBCFD-20FD-48A3-96C7-1F6649CD1F52}")
 public:
-    explicit QSimpleQmlAx(QWidget *parent = 0) :
+    explicit QSimpleQmlAx(QWidget *parent = nullptr) :
         QMainWindow(parent)
     {
         auto ui = new QQuickWidget(this);
@@ -103,10 +99,10 @@ public:
         qmlRegisterType<Controller>("app", 1, 0, "Controller");
 
         // Initialize view
-        ui->rootContext()->setContextProperty("context", QVariant::fromValue(new Controller(this)));
+        ui->rootContext()->setContextProperty(QStringLiteral("context"), QVariant::fromValue(new Controller(this)));
         ui->setMinimumSize(200, 200);
         ui->setResizeMode(QQuickWidget::SizeRootObjectToView);
-        ui->setSource(QUrl("qrc:/main.qml"));
+        ui->setSource(QUrl(QStringLiteral("qrc:/main.qml")));
         setCentralWidget(ui);
     }
 };
diff --git a/examples/activeqt/webbrowser/main.cpp b/examples/activeqt/webbrowser/main.cpp
index 869ddfc..9d64601 100644
--- a/examples/activeqt/webbrowser/main.cpp
+++ b/examples/activeqt/webbrowser/main.cpp
@@ -125,8 +125,8 @@ class MainWindow : public QMainWindow, public Ui::MainWindow
 {
     Q_OBJECT
 public:
-    MainWindow();
-    ~MainWindow();
+    explicit MainWindow();
+    virtual ~MainWindow();
 
 public slots:
     void navigate(const QString &address);
@@ -145,17 +145,17 @@ public slots:
 
 private:
     inline const QString address() const
-        { return addressEdit->text().trimmed(); }
+        { return m_addressEdit->text().trimmed(); }
     QList<Location> bookmarks() const;
     QAction *addLocation(const Location &location, QMenu *menu);
     inline void addBookmark(const Location &location)
-        { bookmarkActions << addLocation(location, BookmarksMenu); }
+        { m_bookmarkActions << addLocation(location, BookmarksMenu); }
 
-    QProgressBar *pb;
-    QLineEdit *addressEdit;
-    QList<QAction *> bookmarkActions;
-    QList<QAction *> historyActions;
-    QSignalMapper locationActionMapper;
+    QProgressBar *m_progressBar;
+    QLineEdit *m_addressEdit;
+    QList<QAction *> m_bookmarkActions;
+    QList<QAction *> m_historyActions;
+    QSignalMapper m_locationActionMapper;
 };
 //! [0] //! [1]
 
@@ -163,11 +163,12 @@ MainWindow::MainWindow()
 {
     setupUi(this);
 
-    addressEdit = new QLineEdit;
+    m_addressEdit = new QLineEdit;
     tbAddress->insertWidget(actionGo, new QLabel(tr("Address")));
-    tbAddress->insertWidget(actionGo, addressEdit);
+    tbAddress->insertWidget(actionGo, m_addressEdit);
+
+    connect(m_addressEdit, SIGNAL(returnPressed()), actionGo, SLOT(trigger()));
 
-    connect(addressEdit, SIGNAL(returnPressed()), actionGo, SLOT(trigger()));
     connect(actionBack, SIGNAL(triggered()), WebBrowser, SLOT(GoBack()));
     connect(actionForward, SIGNAL(triggered()), WebBrowser, SLOT(GoForward()));
     connect(actionStop, SIGNAL(triggered()), WebBrowser, SLOT(Stop()));
@@ -175,12 +176,12 @@ MainWindow::MainWindow()
     connect(actionHome, SIGNAL(triggered()), WebBrowser, SLOT(GoHome()));
     connect(actionSearch, SIGNAL(triggered()), WebBrowser, SLOT(GoSearch()));
 
-    pb = new QProgressBar(statusBar());
-    pb->setTextVisible(false);
-    pb->hide();
-    statusBar()->addPermanentWidget(pb);
+    m_progressBar = new QProgressBar(statusBar());
+    m_progressBar->setTextVisible(false);
+    m_progressBar->hide();
+    statusBar()->addPermanentWidget(m_progressBar);
 
-    connect(&locationActionMapper, SIGNAL(mapped(QString)), this, SLOT(navigate(QString)));
+    connect(&m_locationActionMapper, QOverload<const QString &>::of(&QSignalMapper::mapped), this, &MainWindow::navigate);
 
     QSettings settings(QSettings::IniFormat, QSettings::UserScope,
                        QCoreApplication::organizationName(), QCoreApplication::applicationName());
@@ -214,23 +215,23 @@ QAction *MainWindow::addLocation(const Location &location, QMenu *menu)
 {
     QAction *action = menu->addAction(location.title);
     action->setData(QVariant::fromValue(location));
-    locationActionMapper.setMapping(action, location.address);
-    connect(action, SIGNAL(triggered()), &locationActionMapper, SLOT(map()));
+    m_locationActionMapper.setMapping(action, location.address);
+    connect(action, &QAction::triggered, &m_locationActionMapper, QOverload<>::of(&QSignalMapper::map));
     return action;
 }
 
 QList<Location> MainWindow::bookmarks() const
 {
     QList<Location> result;
-    for (const QAction *action : qAsConst(bookmarkActions))
+    for (const QAction *action : qAsConst(m_bookmarkActions))
         result.append(locationFromAction(action));
     return result;
 }
 
 void MainWindow::on_actionAddBookmark_triggered()
 {
-    if (!historyActions.isEmpty()) {
-        const Location location = locationFromAction(historyActions.last());
+    if (!m_historyActions.isEmpty()) {
+        const Location location = locationFromAction(m_historyActions.last());
         if (!containsAddress(bookmarks(), location.address))
             addBookmark(location);
     }
@@ -241,26 +242,26 @@ void MainWindow::on_WebBrowser_TitleChange(const QString &title)
 {
     // This is called multiple times after NavigateComplete().
     // Add new URLs to history here.
-    setWindowTitle("Qt WebBrowser - " + title);
+    setWindowTitle(tr("Qt WebBrowser - ") + title);
     const QString currentAddress = address();
-    const QString historyAddress = historyActions.isEmpty() ?
-        QString() : locationFromAction(historyActions.last()).address;
-    if (currentAddress.isEmpty() || currentAddress == "about:blank" || currentAddress == historyAddress)
+    const QString historyAddress = m_historyActions.isEmpty() ?
+        QString() : locationFromAction(m_historyActions.last()).address;
+    if (currentAddress.isEmpty() || currentAddress == QStringLiteral("about:blank") || currentAddress == historyAddress)
         return;
-    historyActions << addLocation(Location(title, currentAddress), HistoryMenu);
-    if (historyActions.size() > 10)
-        delete historyActions.takeFirst();
+    m_historyActions << addLocation(Location(title, currentAddress), HistoryMenu);
+    if (m_historyActions.size() > 10)
+        delete m_historyActions.takeFirst();
 }
 
 void MainWindow::on_WebBrowser_ProgressChange(int a, int b)
 {
     if (a <= 0 || b <= 0) {
-        pb->hide();
+        m_progressBar->hide();
         return;
     }
-    pb->show();
-    pb->setRange(0, b);
-    pb->setValue(a);
+    m_progressBar->setRange(0, b);
+    m_progressBar->setValue(a);
+    m_progressBar->show();
 }
 
 void MainWindow::on_WebBrowser_CommandStateChange(int cmd, bool on)
@@ -282,10 +283,9 @@ void MainWindow::on_WebBrowser_BeforeNavigate()
 
 void MainWindow::on_WebBrowser_NavigateComplete(const QString &url)
 {
+    QSignalBlocker blocker(m_addressEdit);
     actionStop->setEnabled(false);
-    const bool blocked = addressEdit->blockSignals(true);
-    addressEdit->setText(url);
-    addressEdit->blockSignals(blocked);
+    m_addressEdit->setText(url);
 }
 
 //! [3]
@@ -305,9 +305,9 @@ void MainWindow::on_actionNewWindow_triggered()
 {
     MainWindow *window = new MainWindow;
     window->show();
-    if (addressEdit->text().isEmpty())
+    if (m_addressEdit->text().isEmpty())
         return;
-    window->addressEdit->setText(addressEdit->text());
+    window->m_addressEdit->setText(m_addressEdit->text());
     window->actionStop->setEnabled(true);
     window->on_actionGo_triggered();
 }
@@ -315,9 +315,9 @@ void MainWindow::on_actionNewWindow_triggered()
 void MainWindow::on_actionAbout_triggered()
 {
     QMessageBox::about(this, tr("About WebBrowser"),
-                tr("This Example has been created using the ActiveQt integration into Qt Designer.\n"
-                   "It demonstrates the use of QAxWidget to embed the Internet Explorer ActiveX\n"
-                   "control into a Qt application."));
+                       tr("This Example has been created using the ActiveQt integration into Qt Designer.\n"
+                       "It demonstrates the use of QAxWidget to embed the Internet Explorer ActiveX\n"
+                       "control into a Qt application."));
 }
 
 void MainWindow::on_actionAboutQt_triggered()
@@ -333,16 +333,15 @@ void MainWindow::on_actionFileClose_triggered()
 #include "main.moc"
 
 //! [3] //! [4]
-int main(int argc, char ** argv)
+int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
     QCoreApplication::setApplicationVersion(QT_VERSION_STR);
-    QCoreApplication::setApplicationName("Active Qt Web Browser");
-    QCoreApplication::setOrganizationName("QtProject");
+    QCoreApplication::setApplicationName(QStringLiteral("Active Qt Web Browser"));
+    QCoreApplication::setOrganizationName(QStringLiteral("QtProject"));
     MainWindow w;
-    const QStringList arguments = QCoreApplication::arguments();
-    const QString url = arguments.size() > 1 ?
-        arguments.at(1) : QString::fromLatin1(qtUrl);
+    const auto &arguments = QCoreApplication::arguments();
+    const QString url = arguments.value(1, QString::fromLatin1(qtUrl));
     w.navigate(url);
     w.show();
     return a.exec();
diff --git a/examples/activeqt/webbrowser/webaxwidget.h b/examples/activeqt/webbrowser/webaxwidget.h
index acb936e..8dac77e 100644
--- a/examples/activeqt/webbrowser/webaxwidget.h
+++ b/examples/activeqt/webbrowser/webaxwidget.h
@@ -48,7 +48,7 @@ class WebAxWidget : public QAxWidget
 {
 public:
 
-    WebAxWidget(QWidget* parent = 0, Qt::WindowFlags f = 0)
+    WebAxWidget(QWidget *parent = nullptr, Qt::WindowFlags f = 0)
         : QAxWidget(parent, f)
     {
     }
@@ -57,8 +57,7 @@ protected:
     {
         if (message >= WM_KEYFIRST && message <= WM_KEYLAST)
             return true;
-        else
-            return QAxWidget::translateKeyEvent(message, keycode);
+        return QAxWidget::translateKeyEvent(message, keycode);
     }
 
 };
diff --git a/examples/activeqt/wrapper/main.cpp b/examples/activeqt/wrapper/main.cpp
index 2c0db5f..b18d6cf 100644
--- a/examples/activeqt/wrapper/main.cpp
+++ b/examples/activeqt/wrapper/main.cpp
@@ -44,117 +44,112 @@
 #include <QPushButton>
 #include <QToolButton>
 #include <QPixmap>
-
-/* XPM */
-static const char *fileopen[] = {
-"    16    13        5            1",
-". c #040404",
-"# c #808304",
-"a c None",
-"b c #f3f704",
-"c c #f3f7f3",
-"aaaaaaaaa...aaaa",
-"aaaaaaaa.aaa.a.a",
-"aaaaaaaaaaaaa..a",
-"a...aaaaaaaa...a",
-".bcb.......aaaaa",
-".cbcbcbcbc.aaaaa",
-".bcbcbcbcb.aaaaa",
-".cbcb...........",
-".bcb.#########.a",
-".cb.#########.aa",
-".b.#########.aaa",
-"..#########.aaaa",
-"...........aaaaa"
-};
-
+#include <functional>
 
 //! [0]
 class ActiveQtFactory : public QAxFactory
 {
 public:
-    ActiveQtFactory( const QUuid &lib, const QUuid &app )
-        : QAxFactory( lib, app )
+    ActiveQtFactory(const QUuid &lib, const QUuid &app)
+        : QAxFactory(lib, app)
     {}
+
     QStringList featureList() const
     {
-        QStringList list;
-        list << "QCheckBox";
-        list << "QRadioButton";
-        list << "QPushButton";
-        list << "QToolButton";
-        return list;
+        return m_activeElements.keys();
     }
+
     QObject *createObject(const QString &key)
     {
-        if ( key == "QCheckBox" )
-            return new QCheckBox(0);
-        if ( key == "QRadioButton" )
-            return new QRadioButton(0);
-        if ( key == "QPushButton" )
-            return new QPushButton(0 );
-        if ( key == "QToolButton" ) {
-            QToolButton *tb = new QToolButton(0);
-//          tb->setIcon( QPixmap(fileopen) );
-            return tb;
-        }
-
-        return 0;
+        auto it = m_activeElements.find(key);
+        if (it != m_activeElements.end())
+            return it->create();
+        return nullptr;
     }
-    const QMetaObject *metaObject( const QString &key ) const
-    {
-        if ( key == "QCheckBox" )
-            return &QCheckBox::staticMetaObject;
-        if ( key == "QRadioButton" )
-            return &QRadioButton::staticMetaObject;
-        if ( key == "QPushButton" )
-            return &QPushButton::staticMetaObject;
-        if ( key == "QToolButton" )
-            return &QToolButton::staticMetaObject;
 
-        return 0;
-    }
-    QUuid classID( const QString &key ) const
+    const QMetaObject *metaObject(const QString &key) const
     {
-        if ( key == "QCheckBox" )
-            return "{6E795DE9-872D-43CF-A831-496EF9D86C68}";
-        if ( key == "QRadioButton" )
-            return "{AFCF78C8-446C-409A-93B3-BA2959039189}";
-        if ( key == "QPushButton" )
-            return "{2B262458-A4B6-468B-B7D4-CF5FEE0A7092}";
-        if ( key == "QToolButton" )
-            return "{7c0ffe7a-60c3-4666-bde2-5cf2b54390a1}";
+        auto it = m_activeElements.find(key);
+        if (it != m_activeElements.end())
+            return it->metaObject;
+        return nullptr;
+    }
 
+    QUuid classID(const QString &key) const
+    {
+        auto it = m_activeElements.find(key);
+        if (it != m_activeElements.end())
+            return it->classID;
         return QUuid();
     }
-    QUuid interfaceID( const QString &key ) const
-    {
-        if ( key == "QCheckBox" )
-            return "{4FD39DD7-2DE0-43C1-A8C2-27C51A052810}";
-        if ( key == "QRadioButton" )
-            return "{7CC8AE30-206C-48A3-A009-B0A088026C2F}";
-        if ( key == "QPushButton" )
-            return "{06831CC9-59B6-436A-9578-6D53E5AD03D3}";
-        if ( key == "QToolButton" )
-            return "{6726080f-d63d-4950-a366-9bf33e5cdf84}";
 
+    QUuid interfaceID(const QString &key) const
+    {
+        auto it = m_activeElements.find(key);
+        if (it != m_activeElements.end())
+            return it->interfaceID;
         return QUuid();
     }
-    QUuid eventsID( const QString &key ) const
-    {
-        if ( key == "QCheckBox" )
-            return "{FDB6FFBE-56A3-4E90-8F4D-198488418B3A}";
-        if ( key == "QRadioButton" )
-            return "{73EE4860-684C-4A66-BF63-9B9EFFA0CBE5}";
-        if ( key == "QPushButton" )
-            return "{3CC3F17F-EA59-4B58-BBD3-842D467131DD}";
-        if ( key == "QToolButton" )
-            return "{f4d421fd-4ead-4fd9-8a25-440766939639}";
 
+    QUuid eventsID(const QString &key) const
+    {
+        auto it = m_activeElements.find(key);
+        if (it != m_activeElements.end())
+            return it->eventsID;
         return QUuid();
     }
+
+private:
+
+    struct ActiveElement {
+       QUuid classID;
+       QUuid interfaceID;
+       QUuid eventsID;
+       const QMetaObject *metaObject;
+       std::function<QObject *()> create;
+    };
+
+    const QHash<QString, ActiveElement> m_activeElements {
+        {
+            QStringLiteral("QCheckBox"), {
+                QUuid("{6E795DE9-872D-43CF-A831-496EF9D86C68}"),
+                QUuid("{4FD39DD7-2DE0-43C1-A8C2-27C51A052810}"),
+                QUuid("{FDB6FFBE-56A3-4E90-8F4D-198488418B3A}"),
+                &QCheckBox::staticMetaObject,
+                []() { return new QCheckBox; }
+            }
+        },
+        {
+            QStringLiteral("QRadioButton"), {
+                QUuid("{AFCF78C8-446C-409A-93B3-BA2959039189}"),
+                QUuid("{7CC8AE30-206C-48A3-A009-B0A088026C2F}"),
+                QUuid("{73EE4860-684C-4A66-BF63-9B9EFFA0CBE5}"),
+                &QRadioButton::staticMetaObject,
+                []() { return new QRadioButton; }
+            }
+        },
+        {
+            QStringLiteral("QPushButton"), {
+                QUuid("{2B262458-A4B6-468B-B7D4-CF5FEE0A7092}"),
+                QUuid("{06831CC9-59B6-436A-9578-6D53E5AD03D3}"),
+                QUuid("{3CC3F17F-EA59-4B58-BBD3-842D467131DD}"),
+                &QPushButton::staticMetaObject,
+                []() { return new QPushButton; }
+            }
+        },
+        {
+            QStringLiteral("QToolButton"), {
+                QUuid("{7c0ffe7a-60c3-4666-bde2-5cf2b54390a1}"),
+                QUuid("{6726080f-d63d-4950-a366-9bf33e5cdf84}"),
+                QUuid("{f4d421fd-4ead-4fd9-8a25-440766939639}"),
+                &QToolButton::staticMetaObject,
+                []() { return new QToolButton; }
+            }
+        },
+    };
+
 };
 //! [0] //! [1]
 
-QAXFACTORY_EXPORT( ActiveQtFactory, "{3B756301-0075-4E40-8BE8-5A81DE2426B7}", "{AB068077-4924-406a-BBAF-42D91C8727DD}" )
+QAXFACTORY_EXPORT(ActiveQtFactory, "{3B756301-0075-4E40-8BE8-5A81DE2426B7}", "{AB068077-4924-406a-BBAF-42D91C8727DD}")
 //! [1]