Qt Designer: Remove worldtimeclock examples

The functionality is sufficiently demonstrated by the existing custom
widget plugin examples.

Task-number: QTBUG-110447
Pick-to: 6.5
Change-Id: I09198bba46ebe8da03c9e21192588e6010bec541
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

17 files changed, 5 insertions, 850 deletions

diff --git a/examples/designer/CMakeLists.txt b/examples/designer/CMakeLists.txt
index 32848c69e..b98f6ea5f 100644
--- a/examples/designer/CMakeLists.txt
+++ b/examples/designer/CMakeLists.txt
@@ -9,11 +9,9 @@ qt_exclude_tool_directories_from_default_target(
 qt_internal_add_example(calculatorform)
 if(QT_BUILD_SHARED_LIBS AND NOT solaris-cc_x_)
     qt_internal_add_example(calculatorbuilder)
-    qt_internal_add_example(worldtimeclockbuilder)
 endif()
 if(QT_BUILD_SHARED_LIBS AND NOT CMAKE_CROSSCOMPILING)
     qt_internal_add_example(containerextension)
     qt_internal_add_example(customwidgetplugin)
     qt_internal_add_example(taskmenuextension)
-    qt_internal_add_example(worldtimeclockplugin)
 endif()
diff --git a/examples/designer/customwidgetplugin/analogclock.h b/examples/designer/customwidgetplugin/analogclock.h
index 073f99e71..c3eabf584 100644
--- a/examples/designer/customwidgetplugin/analogclock.h
+++ b/examples/designer/customwidgetplugin/analogclock.h
@@ -7,15 +7,19 @@
 #include <QWidget>
 #include <QtUiPlugin/QDesignerExportWidget>
 
+//! [0]
 class QDESIGNER_WIDGET_EXPORT AnalogClock : public QWidget
 {
     Q_OBJECT
+//! [0]
 
 public:
     explicit AnalogClock(QWidget *parent = nullptr);
 
 protected:
     void paintEvent(QPaintEvent *event) override;
+//! [1]
 };
+//! [1]
 
 #endif
diff --git a/examples/designer/designer.pro b/examples/designer/designer.pro
index e7a668195..5f9cc2769 100644
--- a/examples/designer/designer.pro
+++ b/examples/designer/designer.pro
@@ -5,9 +5,7 @@ SUBDIRS     = calculatorform
         SUBDIRS += calculatorbuilder \
                    containerextension \
                    customwidgetplugin \
-                   taskmenuextension \
-                   worldtimeclockbuilder \
-                   worldtimeclockplugin
+                   taskmenuextension
 }
 
 # the sun cc compiler has a problem with the include lines for the form.prf
diff --git a/examples/designer/doc/snippets/doc_src_examples_worldtimeclockplugin.pro b/examples/designer/doc/snippets/doc_src_examples_worldtimeclockplugin.pro
deleted file mode 100644
index 903cef948..000000000
--- a/examples/designer/doc/snippets/doc_src_examples_worldtimeclockplugin.pro
+++ /dev/null
@@ -1,7 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#! [0]
-target.path = $$[QT_INSTALL_PLUGINS]/designer
-INSTALLS += target
-#! [0]
diff --git a/examples/designer/doc/src/worldtimeclockbuilder.qdoc b/examples/designer/doc/src/worldtimeclockbuilder.qdoc
deleted file mode 100644
index b732054b0..000000000
--- a/examples/designer/doc/src/worldtimeclockbuilder.qdoc
+++ /dev/null
@@ -1,73 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-  \example worldtimeclockbuilder
-  \ingroup examples-designer
-  \title World Time Clock Builder Example
-
-  \brief Creating forms with Qt Designer that contain custom widgets that can be
-  dynamically generated at run-time.
-
-  \image worldtimeclockbuilder-example.png
-
-  This example uses a form containing the custom widget plugin described in the
-  \l{worldtimeclockplugin}{World Time Clock Plugin} example, and
-  dynamically generates a user interface using the QUiLoader class, part of
-  the QtUiTools module.
-
-  \section1 Preparation
-
-  As with the \l{calculatorbuilder}{Calculator Builder} example, the
-  project file for this example needs to include the appropriate definitions
-  to ensure that it is built against the required Qt modules.
-
-  \snippet worldtimeclockbuilder/worldtimeclockbuilder.pro 0
-
-  By appending \c form to the \c CONFIG declaration, we instruct \c qmake to
-  generate a dependency on the \c libQtUiTools library containing the QtUiTools
-  classes.
-
-  Note that we do not inform \c qmake about any UI files, and so none will
-  be processed and built into the application. The resource file contains
-  an entry for the particular form that we wish to use:
-
-  \quotefile worldtimeclockbuilder/worldtimeclockbuilder.qrc
-
-  Forms do not need to be included with the application in this way. We only
-  include a form in the application's resources for convenience, and to keep
-  the example short.
-
-  \section1 Loading and Building the Form
-
-  Since this example only loads and displays a pre-prepared form, all of the
-  work can be done in the main() function. We are using a class from the
-  QtUiTools library so, in addition to any other Qt classes that are normally
-  required to write an application, we must include the appropriate header
-  file:
-
-  \snippet worldtimeclockbuilder/main.cpp 0
-
-  The main function initializes the resource system with the Q_INIT_RESOURCE()
-  macro and constructs an QApplication instance in the usual way:
-
-  \snippet worldtimeclockbuilder/main.cpp 1
-
-  We construct a QUiLoader object to handle the form we want to use.
-
-  The form itself is obtained from the resource file system using the path
-  defined in the resource file. We use the form loader to load and construct
-  the form:
-
-  \snippet worldtimeclockbuilder/main.cpp 2
-
-  Once the form has been loaded, the resource file can be closed and the
-  widget is shown.
-
-  \snippet worldtimeclockbuilder/main.cpp 3
-
-  The form loader ensures that all the signal and slot connections between
-  objects in the form are set up correctly when the form is loaded. As a
-  result, the time is updated by the World Time Clock widget, and the time
-  zone spin box can be used to change the position of the hour hand.
-*/
diff --git a/examples/designer/doc/src/worldtimeclockplugin.qdoc b/examples/designer/doc/src/worldtimeclockplugin.qdoc
deleted file mode 100644
index 25198f261..000000000
--- a/examples/designer/doc/src/worldtimeclockplugin.qdoc
+++ /dev/null
@@ -1,182 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-    \example worldtimeclockplugin
-    \ingroup examples-designer
-    \title World Time Clock Plugin Example
-
-    \brief Creating a custom widget plugin for \QD that uses signals and slots.
-
-    \image worldtimeclockplugin-example.png
-
-    In this example, we simply extend the \l
-    {customwidgetplugin}{Custom Widget Plugin} example and
-    its custom widget (based on the \l{widgets/analogclock}{Analog
-    Clock} example), by introducing the concept of signals and slots.
-
-    The World Time Clock Plugin example consists of two classes:
-
-    \list
-    \li \c WorldTimeClock is a custom clock widget with hour and
-       minute hands that is automatically updated every few seconds.
-    \li \c WorldTimeClockPlugin exposes the \c WorldTimeClock class to \QD.
-    \endlist
-
-    First we will take a look at the \c WorldTimeClock class which
-    extends the \l {customwidgetplugin}{Custom Widget Plugin}
-    example's \c AnalogClock class by providing a signal and a
-    slot. Then we will take a quick look at the \c
-    WorldTimeClockPlugin class, but this class is in most parts
-    identical to the \l {customwidgetplugin}{Custom Widget
-    Plugin} example's implementation.
-
-    Finally we take a look at the plugin's project file. The project
-    file for custom widget plugins needs some additional information
-    to ensure that they will work within \QD. This is also covered in
-    the \l {customwidgetplugin}{Custom Widget Plugin} example,
-    but due to its importance (custom widget plugins rely on
-    components supplied with \QD which must be specified in the
-    project file that we use) we will repeat it here.
-
-    \section1 WorldTimeClock Class
-
-    The \c WorldTimeClock class inherits QWidget, and is a custom
-    clock widget with hour and minute hands that is automatically
-    updated every few seconds. What makes this example different from
-    the \l {customwidgetplugin}{Custom Widget Plugin}
-    example, is the introduction of the signal and slot in the custom
-    widget class:
-
-    \snippet worldtimeclockplugin/worldtimeclock.h 1
-
-    Note the use of the QDESIGNER_WIDGET_EXPORT macro. This is needed
-    to ensure that \QD can create instances of the widget on some
-    platforms, but it is a good idea to use it on all platforms.
-
-    We declare the \c setTimeZone() slot with an associated \c
-    timeZoneOffset variable, and we declare an \c updated() signal
-    which takes the current time as argument and is emitted whenever
-    the widget is repainted.
-
-    \image worldtimeclock-connection.png
-
-    In \QD's workspace we can then, for example, connect the \c
-    WorldTimeClock widget's \c updated() signal to a QTimeEdit's \l
-    {QDateTimeEdit::setTime()}{setTime()} slot using \QD's mode
-    for editing signal and slots.
-
-    \image worldtimeclock-signalandslot.png
-
-    We can also connect a QSpinBox's \l
-    {QSpinBox::valueChanged()}{valueChanged()} signal to the \c
-    WorldTimeClock's \c setTimeZone() slot.
-
-    \section1 WorldTimeClockPlugin Class
-
-    The \c WorldTimeClockPlugin class exposes the \c WorldTimeClock
-    class to \QD. Its definition is equivalent to the \l
-    {customwidgetplugin}{Custom Widget Plugin} example's
-    plugin class which is explained in detail. The only part of the
-    class definition that is specific to this particular custom widget
-    is the class name.
-
-    To ensure that Qt recognizes the widget as a plugin, export relevant
-    information about the widget by adding the \c Q_PLUGIN_METADATA() macro:
-
-    \snippet worldtimeclockplugin/worldtimeclockplugin.h 0
-
-    The plugin class provides \QD with basic information about our
-    plugin, such as its class name and its include file. Furthermore
-    it knows how to create instances of the \c WorldTimeClockPlugin
-    widget.  \c WorldTimeClockPlugin also defines the \l
-    {QDesignerCustomWidgetInterface::initialize()}{initialize()}
-    function which is called after the plugin is loaded into \QD. The
-    function's QDesignerFormEditorInterface parameter provides the
-    plugin with a gateway to all of \QD's API's.
-
-    The \c WorldTimeClockPlugin class inherits from both QObject and
-    QDesignerCustomWidgetInterface. It is important to remember, when
-    using multiple inheritance, to ensure that all the interfaces
-    (i.e. the classes that doesn't inherit Q_OBJECT) are made known to
-    the meta object system using the Q_INTERFACES() macro. This
-    enables \QD to use qobject_cast() to query for supported
-    interfaces using nothing but a QObject pointer.
-
-    The implementation of the \c WorldTimeClockPlugin is also
-    equivalent to the plugin interface implementation in the \l
-    {customwidgetplugin}{Custom Widget Plugin} example (only
-    the class name and the implementation of
-    QDesignerCustomWidgetInterface::domXml() differ). The main thing
-    to remember is to use the Q_PLUGIN_METADATA() macro to export the \c
-    WorldTimeClockPlugin class for use with \QD:
-
-    \snippet worldtimeclockplugin/worldtimeclockplugin.h 1
-
-    Without this macro, there is no way for Qt Designer to use the
-    widget.
-
-    \section1 Project files
-    \section2 CMake
-
-    The project files need to state that a plugin linking
-    to the \QD libraries is to be built:
-
-    \snippet worldtimeclockplugin/CMakeLists.txt 0
-    \codeline
-    \snippet worldtimeclockplugin/CMakeLists.txt 2
-
-    The link libraries list specifies \c Qt::UiPlugin. This indicates that
-    the plugin uses the abstract interfaces QDesignerCustomWidgetInterface
-    and QDesignerCustomWidgetCollectionInterface only and has no linkage
-    to the \QD libraries. When accessing other interfaces of \QD that have
-    linkage, \c Designer should be used instead; this ensures that the plugin
-    dynamically links to the \QD libraries and has a run-time dependency on
-    them.
-
-    The header and source files for the widget are declared in the
-    usual way:
-
-    \snippet worldtimeclockplugin/CMakeLists.txt 1
-
-    We provide an implementation of the plugin interface so that \QD
-    can use the custom widget. In this particular example we also
-    provide implementations of the container extension interface and
-    the extension factory.
-
-    It is important to ensure that the plugin is installed in a
-    location that is searched by \QD. We do this by specifying a
-    target path for the project and adding it to the list of items to
-    install:
-
-    \snippet worldtimeclockplugin/CMakeLists.txt 3
-    \snippet worldtimeclockplugin/CMakeLists.txt 4
-
-    The custom widget is created as a library. It will be
-    installed alongside the other \QD plugins when the project is
-    installed (using \c{ninja install} or an equivalent installation
-    procedure).
-
-    For more information about plugins, see the
-    \l {How to Create Qt Plugins} documentation.
-
-    \section2 qmake
-
-    The following example shows how to link a plugin to the \QD libraries:
-
-    \snippet worldtimeclockplugin/worldtimeclockplugin.pro 0
-    \codeline
-    \snippet worldtimeclockplugin/worldtimeclockplugin.pro 1
-
-    The \c QT variable contains the keyword \c uiplugin, which is
-    the equivalent of the \c Qt::UiPlugin library.
-
-    The following example shows how to add the header and source files of the
-    widget:
-
-    \snippet worldtimeclockplugin/worldtimeclockplugin.pro 2
-
-    The following example shows how to install a plugin to the \QD's plugin path:
-
-    \snippet worldtimeclockplugin/worldtimeclockplugin.pro 3
-*/
diff --git a/examples/designer/worldtimeclockbuilder/CMakeLists.txt b/examples/designer/worldtimeclockbuilder/CMakeLists.txt
deleted file mode 100644
index 8016d9505..000000000
--- a/examples/designer/worldtimeclockbuilder/CMakeLists.txt
+++ /dev/null
@@ -1,52 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: BSD-3-Clause
-
-cmake_minimum_required(VERSION 3.16)
-project(worldtimeclockbuilder LANGUAGES CXX)
-
-set(CMAKE_INCLUDE_CURRENT_DIR ON)
-
-set(CMAKE_AUTOMOC ON)
-set(CMAKE_AUTOUIC ON)
-
-if(NOT DEFINED INSTALL_EXAMPLESDIR)
-    set(INSTALL_EXAMPLESDIR "examples")
-endif()
-
-set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/designer/worldtimeclockbuilder")
-
-find_package(Qt6 REQUIRED COMPONENTS Core Gui UiTools Widgets)
-
-qt_add_executable(worldtimeclockbuilder
-    main.cpp
-)
-
-set_target_properties(worldtimeclockbuilder PROPERTIES
-    WIN32_EXECUTABLE TRUE
-    MACOSX_BUNDLE TRUE
-)
-
-target_link_libraries(worldtimeclockbuilder PUBLIC
-    Qt::Core
-    Qt::Gui
-    Qt::UiTools
-    Qt::Widgets
-)
-
-# Resources:
-set(worldtimeclockbuilder_resource_files
-    "form.ui"
-)
-
-qt6_add_resources(worldtimeclockbuilder "worldtimeclockbuilder"
-    PREFIX
-        "/forms"
-    FILES
-        ${worldtimeclockbuilder_resource_files}
-)
-
-install(TARGETS worldtimeclockbuilder
-    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
-    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
-    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
-)
diff --git a/examples/designer/worldtimeclockbuilder/form.ui b/examples/designer/worldtimeclockbuilder/form.ui
deleted file mode 100644
index e5be1d911..000000000
--- a/examples/designer/worldtimeclockbuilder/form.ui
+++ /dev/null
@@ -1,162 +0,0 @@
-<ui version="4.0" >
- <author></author>
- <comment></comment>
- <exportmacro></exportmacro>
- <class>WorldTimeForm</class>
- <widget class="QWidget" name="WorldTimeForm" >
-  <property name="geometry" >
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>400</width>
-    <height>300</height>
-   </rect>
-  </property>
-  <property name="windowTitle" >
-   <string>World Time Clock</string>
-  </property>
-  <layout class="QHBoxLayout" >
-   <property name="margin" >
-    <number>9</number>
-   </property>
-   <property name="spacing" >
-    <number>6</number>
-   </property>
-   <item>
-    <widget class="WorldTimeClock" name="worldTimeClock" />
-   </item>
-   <item>
-    <layout class="QVBoxLayout" >
-     <property name="margin" >
-      <number>1</number>
-     </property>
-     <property name="spacing" >
-      <number>6</number>
-     </property>
-     <item>
-      <spacer>
-       <property name="orientation" >
-        <enum>Qt::Vertical</enum>
-       </property>
-       <property name="sizeHint" >
-        <size>
-         <width>20</width>
-         <height>40</height>
-        </size>
-       </property>
-      </spacer>
-     </item>
-     <item>
-      <layout class="QHBoxLayout" >
-       <property name="margin" >
-        <number>1</number>
-       </property>
-       <property name="spacing" >
-        <number>6</number>
-       </property>
-       <item>
-        <widget class="QLabel" name="label" >
-         <property name="text" >
-          <string>Current time:</string>
-         </property>
-        </widget>
-       </item>
-       <item>
-        <widget class="QTimeEdit" name="timeEdit" >
-         <property name="readOnly" >
-          <bool>true</bool>
-         </property>
-        </widget>
-       </item>
-      </layout>
-     </item>
-     <item>
-      <layout class="QHBoxLayout" >
-       <property name="margin" >
-        <number>1</number>
-       </property>
-       <property name="spacing" >
-        <number>6</number>
-       </property>
-       <item>
-        <widget class="QLabel" name="label_2" >
-         <property name="text" >
-          <string>Set time zone:</string>
-         </property>
-        </widget>
-       </item>
-       <item>
-        <widget class="QSpinBox" name="spinBox" >
-         <property name="maximum" >
-          <number>12</number>
-         </property>
-         <property name="minimum" >
-          <number>-12</number>
-         </property>
-        </widget>
-       </item>
-      </layout>
-     </item>
-     <item>
-      <spacer>
-       <property name="orientation" >
-        <enum>Qt::Vertical</enum>
-       </property>
-       <property name="sizeHint" >
-        <size>
-         <width>20</width>
-         <height>40</height>
-        </size>
-       </property>
-      </spacer>
-     </item>
-    </layout>
-   </item>
-  </layout>
- </widget>
- <pixmapfunction></pixmapfunction>
- <customwidgets>
-  <customwidget>
-   <class>WorldTimeClock</class>
-   <extends></extends>
-   <header>worldtimeclock.h</header>
-   <container>0</container>
-   <pixmap></pixmap>
-  </customwidget>
- </customwidgets>
- <resources/>
- <connections>
-  <connection>
-   <sender>spinBox</sender>
-   <signal>valueChanged(int)</signal>
-   <receiver>worldTimeClock</receiver>
-   <slot>setTimeZone(int)</slot>
-   <hints>
-    <hint type="sourcelabel" >
-     <x>339</x>
-     <y>166</y>
-    </hint>
-    <hint type="destinationlabel" >
-     <x>157</x>
-     <y>230</y>
-    </hint>
-   </hints>
-  </connection>
-  <connection>
-   <sender>worldTimeClock</sender>
-   <signal>updated(QTime)</signal>
-   <receiver>timeEdit</receiver>
-   <slot>setTime(QTime)</slot>
-   <hints>
-    <hint type="sourcelabel" >
-     <x>141</x>
-     <y>59</y>
-    </hint>
-    <hint type="destinationlabel" >
-     <x>291</x>
-     <y>133</y>
-    </hint>
-   </hints>
-  </connection>
- </connections>
-</ui>
diff --git a/examples/designer/worldtimeclockbuilder/main.cpp b/examples/designer/worldtimeclockbuilder/main.cpp
deleted file mode 100644
index 18e879052..000000000
--- a/examples/designer/worldtimeclockbuilder/main.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-//! [0]
-#include <QtUiTools>
-//! [0]
-#include <QApplication>
-#include <QWidget>
-#include <QFile>
-
-using namespace Qt::StringLiterals;
-
-//! [1]
-int main(int argc, char *argv[])
-{
-    Q_INIT_RESOURCE(worldtimeclockbuilder);
-
-    QApplication app(argc, argv);
-
-    QUiLoader loader;
-//! [1]
-
-//! [2]
-    QFile file(u":/forms/form.ui"_s);
-    file.open(QFile::ReadOnly);
-
-    QWidget *widget = loader.load(&file);
-
-    file.close();
-    widget->show();
-//! [2]
-
-//! [3]
-    return app.exec();
-}
-//! [3]
diff --git a/examples/designer/worldtimeclockbuilder/worldtimeclockbuilder.pro b/examples/designer/worldtimeclockbuilder/worldtimeclockbuilder.pro
deleted file mode 100644
index 1e420aa65..000000000
--- a/examples/designer/worldtimeclockbuilder/worldtimeclockbuilder.pro
+++ /dev/null
@@ -1,8 +0,0 @@
-#! [0]
-QT          += widgets uitools
-SOURCES     = main.cpp
-RESOURCES   = worldtimeclockbuilder.qrc
-#! [0]
-
-target.path = $$[QT_INSTALL_EXAMPLES]/designer/worldtimeclockbuilder
-INSTALLS += target
diff --git a/examples/designer/worldtimeclockbuilder/worldtimeclockbuilder.qrc b/examples/designer/worldtimeclockbuilder/worldtimeclockbuilder.qrc
deleted file mode 100644
index 89d5ac3c2..000000000
--- a/examples/designer/worldtimeclockbuilder/worldtimeclockbuilder.qrc
+++ /dev/null
@@ -1,5 +0,0 @@
-<!DOCTYPE RCC><RCC version="1.0">
-<qresource prefix="/forms">
-   <file>form.ui</file>
-</qresource>
-</RCC>
diff --git a/examples/designer/worldtimeclockplugin/CMakeLists.txt b/examples/designer/worldtimeclockplugin/CMakeLists.txt
deleted file mode 100644
index d532af311..000000000
--- a/examples/designer/worldtimeclockplugin/CMakeLists.txt
+++ /dev/null
@@ -1,53 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: BSD-3-Clause
-
-cmake_minimum_required(VERSION 3.16)
-project(worldtimeclockplugin LANGUAGES CXX)
-
-set(CMAKE_AUTOMOC ON)
-
-#! [0]
-find_package(Qt6 REQUIRED COMPONENTS Core Gui UiPlugin Widgets)
-
-qt_add_plugin(worldtimeclockplugin)
-#! [0]
-
-#! [1]
-target_sources(worldtimeclockplugin PRIVATE
-    worldtimeclock.cpp worldtimeclock.h
-    worldtimeclockplugin.cpp worldtimeclockplugin.h
-)
-#! [1]
-
-set_target_properties(worldtimeclockplugin PROPERTIES
-    WIN32_EXECUTABLE TRUE
-    MACOSX_BUNDLE TRUE
-)
-
-#! [2]
-target_link_libraries(worldtimeclockplugin PUBLIC
-    Qt::Core
-    Qt::Gui
-    Qt::UiPlugin
-    Qt::Widgets
-)
-#! [2]
-
-if(QT6_INSTALL_PREFIX)
-#! [3]
-   set(INSTALL_EXAMPLEDIR "${QT6_INSTALL_PREFIX}/${QT6_INSTALL_PLUGINS}/designer")
-#! [3]
-else()
-   if(NOT DEFINED INSTALL_EXAMPLESDIR)
-       set(INSTALL_EXAMPLESDIR "examples")
-   endif()
-   set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/plugins/designer")
-endif()
-
-#! [4]
-install(TARGETS worldtimeclockplugin
-    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
-    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
-    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
-)
-#! [4]
diff --git a/examples/designer/worldtimeclockplugin/worldtimeclock.cpp b/examples/designer/worldtimeclockplugin/worldtimeclock.cpp
deleted file mode 100644
index c3190d275..000000000
--- a/examples/designer/worldtimeclockplugin/worldtimeclock.cpp
+++ /dev/null
@@ -1,77 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include "worldtimeclock.h"
-
-#include <QMouseEvent>
-#include <QPainter>
-
-#include <QTimer>
-
-WorldTimeClock::WorldTimeClock(QWidget *parent)
-    : QWidget(parent)
-{
-    QTimer *timer = new QTimer(this);
-    connect(timer, &QTimer::timeout, this, qOverload<>(&QWidget::update));
-    timer->start(1000);
-
-    setWindowTitle(tr("World Time Clock"));
-    resize(200, 200);
-}
-
-void WorldTimeClock::paintEvent(QPaintEvent *)
-{
-    static const QPoint hourHand[3] = {{7, 8}, {-7, 8}, {0, -40}};
-    static const QPoint minuteHand[3] = {{7, 8}, {-7, 8}, {0, -70}};
-
-    QColor hourColor(127, 0, 127);
-    QColor minuteColor(0, 127, 127, 191);
-
-    int side = qMin(width(), height());
-    QTime time = QTime::currentTime();
-    time = time.addSecs(timeZoneOffset);
-
-    QPainter painter(this);
-    painter.setRenderHint(QPainter::Antialiasing);
-    painter.translate(width() / 2, height() / 2);
-    painter.scale(side / 200.0, side / 200.0);
-
-    painter.setPen(Qt::NoPen);
-    painter.setBrush(hourColor);
-
-    painter.save();
-    painter.rotate(30.0 * ((time.hour() + time.minute() / 60.0)));
-    painter.drawConvexPolygon(hourHand, 3);
-    painter.restore();
-
-    painter.setPen(hourColor);
-
-    for (int i = 0; i < 12; ++i) {
-        painter.drawLine(88, 0, 96, 0);
-        painter.rotate(30.0);
-    }
-
-    painter.setPen(Qt::NoPen);
-    painter.setBrush(minuteColor);
-
-    painter.save();
-    painter.rotate(6.0 * (time.minute() + time.second() / 60.0));
-    painter.drawConvexPolygon(minuteHand, 3);
-    painter.restore();
-
-    painter.setPen(minuteColor);
-
-    for (int j = 0; j < 60; ++j) {
-        if ((j % 5) != 0)
-            painter.drawLine(92, 0, 96, 0);
-        painter.rotate(6.0);
-    }
-
-    emit updated(time);
-}
-
-void WorldTimeClock::setTimeZone(int hourOffset)
-{
-    timeZoneOffset = qMin(qMax(-12, hourOffset), 12) * 3600;
-    update();
-}
diff --git a/examples/designer/worldtimeclockplugin/worldtimeclock.h b/examples/designer/worldtimeclockplugin/worldtimeclock.h
deleted file mode 100644
index 10682e8bf..000000000
--- a/examples/designer/worldtimeclockplugin/worldtimeclock.h
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef WORLDTIMECLOCK_H
-#define WORLDTIMECLOCK_H
-
-#include <QTime>
-#include <QWidget>
-#include <QtUiPlugin/QDesignerExportWidget>
-
-//! [0] //! [1]
-class QDESIGNER_WIDGET_EXPORT WorldTimeClock : public QWidget
-{
-    Q_OBJECT
-//! [0]
-
-public:
-    explicit WorldTimeClock(QWidget *parent = nullptr);
-
-public slots:
-    void setTimeZone(int hourOffset);
-
-signals:
-    void updated(QTime currentTime);
-
-protected:
-    void paintEvent(QPaintEvent *event) override;
-
-private:
-    int timeZoneOffset = 0;
-//! [2]
-};
-//! [1] //! [2]
-
-#endif
diff --git a/examples/designer/worldtimeclockplugin/worldtimeclockplugin.cpp b/examples/designer/worldtimeclockplugin/worldtimeclockplugin.cpp
deleted file mode 100644
index 4a52c3961..000000000
--- a/examples/designer/worldtimeclockplugin/worldtimeclockplugin.cpp
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include "worldtimeclock.h"
-#include "worldtimeclockplugin.h"
-
-#include <QtPlugin>
-
-using namespace Qt::StringLiterals;
-
-WorldTimeClockPlugin::WorldTimeClockPlugin(QObject *parent)
-    : QObject(parent)
-{
-}
-
-void WorldTimeClockPlugin::initialize(QDesignerFormEditorInterface * /* core */)
-{
-    if (initialized)
-        return;
-
-    initialized = true;
-}
-
-bool WorldTimeClockPlugin::isInitialized() const
-{
-    return initialized;
-}
-
-QWidget *WorldTimeClockPlugin::createWidget(QWidget *parent)
-{
-    return new WorldTimeClock(parent);
-}
-
-QString WorldTimeClockPlugin::name() const
-{
-    return u"WorldTimeClock"_s;
-}
-
-QString WorldTimeClockPlugin::group() const
-{
-    return u"Display Widgets [Examples]"_s;
-}
-
-QIcon WorldTimeClockPlugin::icon() const
-{
-    return {};
-}
-
-QString WorldTimeClockPlugin::toolTip() const
-{
-    return {};
-}
-
-QString WorldTimeClockPlugin::whatsThis() const
-{
-    return {};
-}
-
-bool WorldTimeClockPlugin::isContainer() const
-{
-    return false;
-}
-
-QString WorldTimeClockPlugin::domXml() const
-{
-    return uR"(
-<ui language="c++">
-  <widget class="WorldTimeClock" name="worldTimeClock">
-    <property name="geometry">
-      <rect>
-        <x>0</x>
-        <y>0</y>
-        <width>100</width>
-        <height>100</height>
-      </rect>
-    </property>
-  </widget>
-</ui>
-)"_s;
-}
-
-QString WorldTimeClockPlugin::includeFile() const
-{
-    return u"worldtimeclock.h"_s;
-}
diff --git a/examples/designer/worldtimeclockplugin/worldtimeclockplugin.h b/examples/designer/worldtimeclockplugin/worldtimeclockplugin.h
deleted file mode 100644
index 3f7b4b80f..000000000
--- a/examples/designer/worldtimeclockplugin/worldtimeclockplugin.h
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef WORLDTIMECLOCKPLUGIN_H
-#define WORLDTIMECLOCKPLUGIN_H
-
-#include <QtUiPlugin/QDesignerCustomWidgetInterface>
-
-//! [0]
-class WorldTimeClockPlugin : public QObject,
-                             public QDesignerCustomWidgetInterface
-{
-    Q_OBJECT
-//! [1]
-    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QDesignerCustomWidgetInterface")
-//! [1]
-    Q_INTERFACES(QDesignerCustomWidgetInterface)
-
-public:
-    explicit WorldTimeClockPlugin(QObject *parent = nullptr);
-
-    bool isContainer() const override;
-    bool isInitialized() const override;
-    QIcon icon() const override;
-    QString domXml() const override;
-    QString group() const override;
-    QString includeFile() const override;
-    QString name() const override;
-    QString toolTip() const override;
-    QString whatsThis() const override;
-    QWidget *createWidget(QWidget *parent) override;
-    void initialize(QDesignerFormEditorInterface *core) override;
-
-private:
-    bool initialized = false;
-};
-//! [0]
-
-#endif
diff --git a/examples/designer/worldtimeclockplugin/worldtimeclockplugin.pro b/examples/designer/worldtimeclockplugin/worldtimeclockplugin.pro
deleted file mode 100644
index dc9331be4..000000000
--- a/examples/designer/worldtimeclockplugin/worldtimeclockplugin.pro
+++ /dev/null
@@ -1,31 +0,0 @@
-#! [1]
-QT          += widgets uiplugin
-#! [1]
-
-QTDIR_build {
-# This is only for the Qt build. Do not use externally. We mean it.
-PLUGIN_TYPE = designer
-PLUGIN_CLASS_NAME = WorldTimeClockPlugin
-load(qt_plugin)
-CONFIG += install_ok
-} else {
-# Public example:
-
-TARGET      = $$qtLibraryTarget($$TARGET)
-#! [0]
-TEMPLATE    = lib
-CONFIG     += plugin
-#! [0]
-
-#! [3]
-target.path = $$[QT_INSTALL_PLUGINS]/designer
-INSTALLS += target
-#! [3]
-}
-
-#! [2]
-HEADERS     = worldtimeclock.h \
-              worldtimeclockplugin.h
-SOURCES     = worldtimeclock.cpp \
-              worldtimeclockplugin.cpp
-#! [2]