6.5.3 clean

tests/manual/examples/widgets/dialogs/classwizard/CMakeLists.txt

@@ -0,0 +1,55 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(classwizard LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/dialogs/classwizard")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(classwizard
+    classwizard.cpp classwizard.h
+    main.cpp
+)
+
+set_target_properties(classwizard PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(classwizard PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+# Resources:
+set(classwizard_resource_files
+    "images/background.png"
+    "images/banner.png"
+    "images/logo1.png"
+    "images/logo2.png"
+    "images/logo3.png"
+    "images/watermark1.png"
+    "images/watermark2.png"
+)
+
+qt_add_resources(classwizard "classwizard"
+    PREFIX
+        "/"
+    FILES
+        ${classwizard_resource_files}
+)
+
+install(TARGETS classwizard
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

tests/manual/examples/widgets/dialogs/classwizard/classwizard.cpp

@@ -0,0 +1,394 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QtWidgets>
+
+#include "classwizard.h"
+
+//! [0] //! [1]
+ClassWizard::ClassWizard(QWidget *parent)
+    : QWizard(parent)
+{
+    addPage(new IntroPage);
+    addPage(new ClassInfoPage);
+    addPage(new CodeStylePage);
+    addPage(new OutputFilesPage);
+    addPage(new ConclusionPage);
+//! [0]
+
+    setPixmap(QWizard::BannerPixmap, QPixmap(":/images/banner.png"));
+    setPixmap(QWizard::BackgroundPixmap, QPixmap(":/images/background.png"));
+
+    setWindowTitle(tr("Class Wizard"));
+//! [2]
+}
+//! [1] //! [2]
+
+//! [3]
+void ClassWizard::accept()
+//! [3] //! [4]
+{
+    QByteArray className = field("className").toByteArray();
+    QByteArray baseClass = field("baseClass").toByteArray();
+    QByteArray macroName = field("macroName").toByteArray();
+    QByteArray baseInclude = field("baseInclude").toByteArray();
+
+    QString outputDir = field("outputDir").toString();
+    QString header = field("header").toString();
+    QString implementation = field("implementation").toString();
+//! [4]
+
+    QByteArray block;
+
+    if (field("comment").toBool()) {
+        block += "/*\n";
+        block += "    " + header.toLatin1() + '\n';
+        block += "*/\n";
+        block += '\n';
+    }
+    if (field("protect").toBool()) {
+        block += "#ifndef " + macroName + '\n';
+        block += "#define " + macroName + '\n';
+        block += '\n';
+    }
+    if (field("includeBase").toBool()) {
+        block += "#include " + baseInclude + '\n';
+        block += '\n';
+    }
+
+    block += "class " + className;
+    if (!baseClass.isEmpty())
+        block += " : public " + baseClass;
+    block += '\n';
+    block += "{\n";
+
+    /* qmake ignore Q_OBJECT */
+
+    if (field("qobjectMacro").toBool()) {
+        block += "    Q_OBJECT\n";
+        block += '\n';
+    }
+    block += "public:\n";
+
+    if (field("qobjectCtor").toBool()) {
+        block += "    " + className + "(QObject *parent = nullptr);\n";
+    } else if (field("qwidgetCtor").toBool()) {
+        block += "    " + className + "(QWidget *parent = nullptr);\n";
+    } else if (field("defaultCtor").toBool()) {
+        block += "    " + className + "();\n";
+        if (field("copyCtor").toBool()) {
+            block += "    " + className + "(const " + className + " &other);\n";
+            block += '\n';
+            block += "    " + className + " &operator=" + "(const " + className
+                     + " &other);\n";
+        }
+    }
+    block += "};\n";
+
+    if (field("protect").toBool()) {
+        block += '\n';
+        block += "#endif\n";
+    }
+
+    QFile headerFile(outputDir + '/' + header);
+    if (!headerFile.open(QFile::WriteOnly | QFile::Text)) {
+        QMessageBox::warning(nullptr, QObject::tr("Simple Wizard"),
+                             QObject::tr("Cannot write file %1:\n%2")
+                             .arg(headerFile.fileName())
+                             .arg(headerFile.errorString()));
+        return;
+    }
+    headerFile.write(block);
+
+    block.clear();
+
+    if (field("comment").toBool()) {
+        block += "/*\n";
+        block += "    " + implementation.toLatin1() + '\n';
+        block += "*/\n";
+        block += '\n';
+    }
+    block += "#include \"" + header.toLatin1() + "\"\n";
+    block += '\n';
+
+    if (field("qobjectCtor").toBool()) {
+        block += className + "::" + className + "(QObject *parent)\n";
+        block += "    : " + baseClass + "(parent)\n";
+        block += "{\n";
+        block += "}\n";
+    } else if (field("qwidgetCtor").toBool()) {
+        block += className + "::" + className + "(QWidget *parent)\n";
+        block += "    : " + baseClass + "(parent)\n";
+        block += "{\n";
+        block += "}\n";
+    } else if (field("defaultCtor").toBool()) {
+        block += className + "::" + className + "()\n";
+        block += "{\n";
+        block += "    // missing code\n";
+        block += "}\n";
+
+        if (field("copyCtor").toBool()) {
+            block += "\n";
+            block += className + "::" + className + "(const " + className
+                     + " &other)\n";
+            block += "{\n";
+            block += "    *this = other;\n";
+            block += "}\n";
+            block += '\n';
+            block += className + " &" + className + "::operator=(const "
+                     + className + " &other)\n";
+            block += "{\n";
+            if (!baseClass.isEmpty())
+                block += "    " + baseClass + "::operator=(other);\n";
+            block += "    // missing code\n";
+            block += "    return *this;\n";
+            block += "}\n";
+        }
+    }
+
+    QFile implementationFile(outputDir + '/' + implementation);
+    if (!implementationFile.open(QFile::WriteOnly | QFile::Text)) {
+        QMessageBox::warning(nullptr, QObject::tr("Simple Wizard"),
+                             QObject::tr("Cannot write file %1:\n%2")
+                             .arg(implementationFile.fileName())
+                             .arg(implementationFile.errorString()));
+        return;
+    }
+    implementationFile.write(block);
+
+//! [5]
+    QDialog::accept();
+//! [5] //! [6]
+}
+//! [6]
+
+//! [7]
+IntroPage::IntroPage(QWidget *parent)
+    : QWizardPage(parent)
+{
+    setTitle(tr("Introduction"));
+    setPixmap(QWizard::WatermarkPixmap, QPixmap(":/images/watermark1.png"));
+
+    label = new QLabel(tr("This wizard will generate a skeleton C++ class "
+                          "definition, including a few functions. You simply "
+                          "need to specify the class name and set a few "
+                          "options to produce a header file and an "
+                          "implementation file for your new C++ class."));
+    label->setWordWrap(true);
+
+    QVBoxLayout *layout = new QVBoxLayout;
+    layout->addWidget(label);
+    setLayout(layout);
+}
+//! [7]
+
+//! [8] //! [9]
+ClassInfoPage::ClassInfoPage(QWidget *parent)
+    : QWizardPage(parent)
+{
+//! [8]
+    setTitle(tr("Class Information"));
+    setSubTitle(tr("Specify basic information about the class for which you "
+                   "want to generate skeleton source code files."));
+    setPixmap(QWizard::LogoPixmap, QPixmap(":/images/logo1.png"));
+
+//! [10]
+    classNameLabel = new QLabel(tr("&Class name:"));
+    classNameLineEdit = new QLineEdit;
+    classNameLabel->setBuddy(classNameLineEdit);
+
+    baseClassLabel = new QLabel(tr("B&ase class:"));
+    baseClassLineEdit = new QLineEdit;
+    baseClassLabel->setBuddy(baseClassLineEdit);
+
+    qobjectMacroCheckBox = new QCheckBox(tr("Generate Q_OBJECT &macro"));
+
+//! [10]
+    groupBox = new QGroupBox(tr("C&onstructor"));
+//! [9]
+
+    qobjectCtorRadioButton = new QRadioButton(tr("&QObject-style constructor"));
+    qwidgetCtorRadioButton = new QRadioButton(tr("Q&Widget-style constructor"));
+    defaultCtorRadioButton = new QRadioButton(tr("&Default constructor"));
+    copyCtorCheckBox = new QCheckBox(tr("&Generate copy constructor and "
+                                        "operator="));
+
+    defaultCtorRadioButton->setChecked(true);
+
+    connect(defaultCtorRadioButton, &QAbstractButton::toggled,
+            copyCtorCheckBox, &QWidget::setEnabled);
+
+//! [11] //! [12]
+    registerField("className*", classNameLineEdit);
+    registerField("baseClass", baseClassLineEdit);
+    registerField("qobjectMacro", qobjectMacroCheckBox);
+//! [11]
+    registerField("qobjectCtor", qobjectCtorRadioButton);
+    registerField("qwidgetCtor", qwidgetCtorRadioButton);
+    registerField("defaultCtor", defaultCtorRadioButton);
+    registerField("copyCtor", copyCtorCheckBox);
+
+    QVBoxLayout *groupBoxLayout = new QVBoxLayout;
+//! [12]
+    groupBoxLayout->addWidget(qobjectCtorRadioButton);
+    groupBoxLayout->addWidget(qwidgetCtorRadioButton);
+    groupBoxLayout->addWidget(defaultCtorRadioButton);
+    groupBoxLayout->addWidget(copyCtorCheckBox);
+    groupBox->setLayout(groupBoxLayout);
+
+    QGridLayout *layout = new QGridLayout;
+    layout->addWidget(classNameLabel, 0, 0);
+    layout->addWidget(classNameLineEdit, 0, 1);
+    layout->addWidget(baseClassLabel, 1, 0);
+    layout->addWidget(baseClassLineEdit, 1, 1);
+    layout->addWidget(qobjectMacroCheckBox, 2, 0, 1, 2);
+    layout->addWidget(groupBox, 3, 0, 1, 2);
+    setLayout(layout);
+//! [13]
+}
+//! [13]
+
+//! [14]
+CodeStylePage::CodeStylePage(QWidget *parent)
+    : QWizardPage(parent)
+{
+    setTitle(tr("Code Style Options"));
+    setSubTitle(tr("Choose the formatting of the generated code."));
+    setPixmap(QWizard::LogoPixmap, QPixmap(":/images/logo2.png"));
+
+    commentCheckBox = new QCheckBox(tr("&Start generated files with a "
+//! [14]
+                                       "comment"));
+    commentCheckBox->setChecked(true);
+
+    protectCheckBox = new QCheckBox(tr("&Protect header file against multiple "
+                                       "inclusions"));
+    protectCheckBox->setChecked(true);
+
+    macroNameLabel = new QLabel(tr("&Macro name:"));
+    macroNameLineEdit = new QLineEdit;
+    macroNameLabel->setBuddy(macroNameLineEdit);
+
+    includeBaseCheckBox = new QCheckBox(tr("&Include base class definition"));
+    baseIncludeLabel = new QLabel(tr("Base class include:"));
+    baseIncludeLineEdit = new QLineEdit;
+    baseIncludeLabel->setBuddy(baseIncludeLineEdit);
+
+    connect(protectCheckBox, &QAbstractButton::toggled,
+            macroNameLabel, &QWidget::setEnabled);
+    connect(protectCheckBox, &QAbstractButton::toggled,
+            macroNameLineEdit, &QWidget::setEnabled);
+    connect(includeBaseCheckBox, &QAbstractButton::toggled,
+            baseIncludeLabel, &QWidget::setEnabled);
+    connect(includeBaseCheckBox, &QAbstractButton::toggled,
+            baseIncludeLineEdit, &QWidget::setEnabled);
+
+    registerField("comment", commentCheckBox);
+    registerField("protect", protectCheckBox);
+    registerField("macroName", macroNameLineEdit);
+    registerField("includeBase", includeBaseCheckBox);
+    registerField("baseInclude", baseIncludeLineEdit);
+
+    QGridLayout *layout = new QGridLayout;
+    layout->setColumnMinimumWidth(0, 20);
+    layout->addWidget(commentCheckBox, 0, 0, 1, 3);
+    layout->addWidget(protectCheckBox, 1, 0, 1, 3);
+    layout->addWidget(macroNameLabel, 2, 1);
+    layout->addWidget(macroNameLineEdit, 2, 2);
+    layout->addWidget(includeBaseCheckBox, 3, 0, 1, 3);
+    layout->addWidget(baseIncludeLabel, 4, 1);
+    layout->addWidget(baseIncludeLineEdit, 4, 2);
+//! [15]
+    setLayout(layout);
+}
+//! [15]
+
+//! [16]
+void CodeStylePage::initializePage()
+{
+    QString className = field("className").toString();
+    macroNameLineEdit->setText(className.toUpper() + "_H");
+
+    QString baseClass = field("baseClass").toString();
+
+    includeBaseCheckBox->setChecked(!baseClass.isEmpty());
+    includeBaseCheckBox->setEnabled(!baseClass.isEmpty());
+    baseIncludeLabel->setEnabled(!baseClass.isEmpty());
+    baseIncludeLineEdit->setEnabled(!baseClass.isEmpty());
+
+    QRegularExpression rx("Q[A-Z].*");
+    if (baseClass.isEmpty()) {
+        baseIncludeLineEdit->clear();
+    } else if (rx.match(baseClass).hasMatch()) {
+        baseIncludeLineEdit->setText('<' + baseClass + '>');
+    } else {
+        baseIncludeLineEdit->setText('"' + baseClass.toLower() + ".h\"");
+    }
+}
+//! [16]
+
+OutputFilesPage::OutputFilesPage(QWidget *parent)
+    : QWizardPage(parent)
+{
+    setTitle(tr("Output Files"));
+    setSubTitle(tr("Specify where you want the wizard to put the generated "
+                   "skeleton code."));
+    setPixmap(QWizard::LogoPixmap, QPixmap(":/images/logo3.png"));
+
+    outputDirLabel = new QLabel(tr("&Output directory:"));
+    outputDirLineEdit = new QLineEdit;
+    outputDirLabel->setBuddy(outputDirLineEdit);
+
+    headerLabel = new QLabel(tr("&Header file name:"));
+    headerLineEdit = new QLineEdit;
+    headerLabel->setBuddy(headerLineEdit);
+
+    implementationLabel = new QLabel(tr("&Implementation file name:"));
+    implementationLineEdit = new QLineEdit;
+    implementationLabel->setBuddy(implementationLineEdit);
+
+    registerField("outputDir*", outputDirLineEdit);
+    registerField("header*", headerLineEdit);
+    registerField("implementation*", implementationLineEdit);
+
+    QGridLayout *layout = new QGridLayout;
+    layout->addWidget(outputDirLabel, 0, 0);
+    layout->addWidget(outputDirLineEdit, 0, 1);
+    layout->addWidget(headerLabel, 1, 0);
+    layout->addWidget(headerLineEdit, 1, 1);
+    layout->addWidget(implementationLabel, 2, 0);
+    layout->addWidget(implementationLineEdit, 2, 1);
+    setLayout(layout);
+}
+
+//! [17]
+void OutputFilesPage::initializePage()
+{
+    QString className = field("className").toString();
+    headerLineEdit->setText(className.toLower() + ".h");
+    implementationLineEdit->setText(className.toLower() + ".cpp");
+    outputDirLineEdit->setText(QDir::toNativeSeparators(QDir::tempPath()));
+}
+//! [17]
+
+ConclusionPage::ConclusionPage(QWidget *parent)
+    : QWizardPage(parent)
+{
+    setTitle(tr("Conclusion"));
+    setPixmap(QWizard::WatermarkPixmap, QPixmap(":/images/watermark2.png"));
+
+    label = new QLabel;
+    label->setWordWrap(true);
+
+    QVBoxLayout *layout = new QVBoxLayout;
+    layout->addWidget(label);
+    setLayout(layout);
+}
+
+void ConclusionPage::initializePage()
+{
+    QString finishText = wizard()->buttonText(QWizard::FinishButton);
+    finishText.remove('&');
+    label->setText(tr("Click %1 to generate the class skeleton.")
+                   .arg(finishText));
+}

tests/manual/examples/widgets/dialogs/classwizard/classwizard.h

@@ -0,0 +1,119 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef CLASSWIZARD_H
+#define CLASSWIZARD_H
+
+#include <QWizard>
+
+QT_BEGIN_NAMESPACE
+class QCheckBox;
+class QGroupBox;
+class QLabel;
+class QLineEdit;
+class QRadioButton;
+QT_END_NAMESPACE
+
+//! [0]
+class ClassWizard : public QWizard
+{
+    Q_OBJECT
+
+public:
+    ClassWizard(QWidget *parent = nullptr);
+
+    void accept() override;
+};
+//! [0]
+
+//! [1]
+class IntroPage : public QWizardPage
+{
+    Q_OBJECT
+
+public:
+    IntroPage(QWidget *parent = nullptr);
+
+private:
+    QLabel *label;
+};
+//! [1]
+
+//! [2]
+class ClassInfoPage : public QWizardPage
+{
+    Q_OBJECT
+
+public:
+    ClassInfoPage(QWidget *parent = nullptr);
+
+private:
+    QLabel *classNameLabel;
+    QLabel *baseClassLabel;
+    QLineEdit *classNameLineEdit;
+    QLineEdit *baseClassLineEdit;
+    QCheckBox *qobjectMacroCheckBox;
+    QGroupBox *groupBox;
+    QRadioButton *qobjectCtorRadioButton;
+    QRadioButton *qwidgetCtorRadioButton;
+    QRadioButton *defaultCtorRadioButton;
+    QCheckBox *copyCtorCheckBox;
+};
+//! [2]
+
+//! [3]
+class CodeStylePage : public QWizardPage
+{
+    Q_OBJECT
+
+public:
+    CodeStylePage(QWidget *parent = nullptr);
+
+protected:
+    void initializePage() override;
+
+private:
+    QCheckBox *commentCheckBox;
+    QCheckBox *protectCheckBox;
+    QCheckBox *includeBaseCheckBox;
+    QLabel *macroNameLabel;
+    QLabel *baseIncludeLabel;
+    QLineEdit *macroNameLineEdit;
+    QLineEdit *baseIncludeLineEdit;
+};
+//! [3]
+
+class OutputFilesPage : public QWizardPage
+{
+    Q_OBJECT
+
+public:
+    OutputFilesPage(QWidget *parent = nullptr);
+
+protected:
+    void initializePage() override;
+
+private:
+    QLabel *outputDirLabel;
+    QLabel *headerLabel;
+    QLabel *implementationLabel;
+    QLineEdit *outputDirLineEdit;
+    QLineEdit *headerLineEdit;
+    QLineEdit *implementationLineEdit;
+};
+
+class ConclusionPage : public QWizardPage
+{
+    Q_OBJECT
+
+public:
+    ConclusionPage(QWidget *parent = nullptr);
+
+protected:
+    void initializePage() override;
+
+private:
+    QLabel *label;
+};
+
+#endif

tests/manual/examples/widgets/dialogs/classwizard/classwizard.pro

@@ -0,0 +1,10 @@
+QT += widgets
+
+HEADERS       = classwizard.h
+SOURCES       = classwizard.cpp \
+                main.cpp
+RESOURCES     = classwizard.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/dialogs/classwizard
+INSTALLS += target

tests/manual/examples/widgets/dialogs/classwizard/classwizard.qrc

@@ -0,0 +1,11 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>images/background.png</file>
+    <file>images/banner.png</file>
+    <file>images/logo1.png</file>
+    <file>images/logo2.png</file>
+    <file>images/logo3.png</file>
+    <file>images/watermark1.png</file>
+    <file>images/watermark2.png</file>
+</qresource>
+</RCC>

tests/manual/examples/widgets/dialogs/classwizard/main.cpp

@@ -0,0 +1,26 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+#include <QTranslator>
+#include <QLocale>
+#include <QLibraryInfo>
+
+#include "classwizard.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+#ifndef QT_NO_TRANSLATION
+    QString translatorFileName = QLatin1String("qtbase_");
+    translatorFileName += QLocale::system().name();
+    QTranslator *translator = new QTranslator(&app);
+    if (translator->load(translatorFileName, QLibraryInfo::path(QLibraryInfo::TranslationsPath)))
+        app.installTranslator(translator);
+#endif
+
+    ClassWizard wizard;
+    wizard.show();
+    return app.exec();
+}

tests/manual/examples/widgets/dialogs/extension/CMakeLists.txt

@@ -0,0 +1,37 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(extension LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/dialogs/extension")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(extension
+    finddialog.cpp finddialog.h
+    main.cpp
+)
+
+set_target_properties(extension PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(extension PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+install(TARGETS extension
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

tests/manual/examples/widgets/dialogs/extension/extension.pro

@@ -0,0 +1,9 @@
+QT += widgets
+
+HEADERS       = finddialog.h
+SOURCES       = finddialog.cpp \
+                main.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/dialogs/extension
+INSTALLS += target

tests/manual/examples/widgets/dialogs/extension/finddialog.cpp

@@ -0,0 +1,77 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QtWidgets>
+
+#include "finddialog.h"
+
+//! [0]
+FindDialog::FindDialog(QWidget *parent)
+    : QDialog(parent)
+{
+    label = new QLabel(tr("Find &what:"));
+    lineEdit = new QLineEdit;
+    label->setBuddy(lineEdit);
+
+    caseCheckBox = new QCheckBox(tr("Match &case"));
+    fromStartCheckBox = new QCheckBox(tr("Search from &start"));
+    fromStartCheckBox->setChecked(true);
+
+//! [1]
+    findButton = new QPushButton(tr("&Find"));
+    findButton->setDefault(true);
+
+    moreButton = new QPushButton(tr("&More"));
+    moreButton->setCheckable(true);
+//! [0]
+    moreButton->setAutoDefault(false);
+
+//! [1]
+
+//! [2]
+    extension = new QWidget;
+
+    wholeWordsCheckBox = new QCheckBox(tr("&Whole words"));
+    backwardCheckBox = new QCheckBox(tr("Search &backward"));
+    searchSelectionCheckBox = new QCheckBox(tr("Search se&lection"));
+//! [2]
+
+//! [3]
+    buttonBox = new QDialogButtonBox(Qt::Vertical);
+    buttonBox->addButton(findButton, QDialogButtonBox::ActionRole);
+    buttonBox->addButton(moreButton, QDialogButtonBox::ActionRole);
+
+    connect(moreButton, &QAbstractButton::toggled, extension, &QWidget::setVisible);
+
+    QVBoxLayout *extensionLayout = new QVBoxLayout;
+    extensionLayout->setContentsMargins(QMargins());
+    extensionLayout->addWidget(wholeWordsCheckBox);
+    extensionLayout->addWidget(backwardCheckBox);
+    extensionLayout->addWidget(searchSelectionCheckBox);
+    extension->setLayout(extensionLayout);
+//! [3]
+
+//! [4]
+    QHBoxLayout *topLeftLayout = new QHBoxLayout;
+    topLeftLayout->addWidget(label);
+    topLeftLayout->addWidget(lineEdit);
+
+    QVBoxLayout *leftLayout = new QVBoxLayout;
+    leftLayout->addLayout(topLeftLayout);
+    leftLayout->addWidget(caseCheckBox);
+    leftLayout->addWidget(fromStartCheckBox);
+
+    QGridLayout *mainLayout = new QGridLayout;
+    mainLayout->setSizeConstraint(QLayout::SetFixedSize);
+    mainLayout->addLayout(leftLayout, 0, 0);
+    mainLayout->addWidget(buttonBox, 0, 1);
+    mainLayout->addWidget(extension, 1, 0, 1, 2);
+    mainLayout->setRowStretch(2, 1);
+
+    setLayout(mainLayout);
+
+    setWindowTitle(tr("Extension"));
+//! [4] //! [5]
+    extension->hide();
+}
+//! [5]

tests/manual/examples/widgets/dialogs/extension/finddialog.h

@@ -0,0 +1,41 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef FINDDIALOG_H
+#define FINDDIALOG_H
+
+#include <QDialog>
+
+QT_BEGIN_NAMESPACE
+class QCheckBox;
+class QDialogButtonBox;
+class QGroupBox;
+class QLabel;
+class QLineEdit;
+class QPushButton;
+QT_END_NAMESPACE
+
+//! [0]
+class FindDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    FindDialog(QWidget *parent = nullptr);
+
+private:
+    QLabel *label;
+    QLineEdit *lineEdit;
+    QCheckBox *caseCheckBox;
+    QCheckBox *fromStartCheckBox;
+    QCheckBox *wholeWordsCheckBox;
+    QCheckBox *searchSelectionCheckBox;
+    QCheckBox *backwardCheckBox;
+    QDialogButtonBox *buttonBox;
+    QPushButton *findButton;
+    QPushButton *moreButton;
+    QWidget *extension;
+};
+//! [0]
+
+#endif

tests/manual/examples/widgets/dialogs/extension/main.cpp

@@ -0,0 +1,16 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+
+#include "finddialog.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    FindDialog dialog;
+
+    dialog.show();
+
+    return app.exec();
+}