Move the settingseditor example into tests/manual

The example uses QTreeWidget when it should use a QTreeView with a
dedicated item model, primarily shows how to use item views (and very
little about QSettings), and is generally not useful to show how an
application could or should use QSettings to store settings.

Turn it into a manual test instead; it's useful for that as it supports
ini and plist files, and settings in different scopes.

Pick-to: 6.7
Fixes: QTBUG-119978
Change-Id: I7ce039f6391c41c679d126d90a251eee60327c39
Reviewed-by: Ed Cooke <ed.cooke@qt.io>
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>

examples/widgets/doc/src/settingseditor.qdoc

@@ -1,15 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-    \example tools/settingseditor
-    \title Settings Editor Example
-    \examplecategory {User Interface Components}
-    \ingroup examples-widgets-tools
-
-    \brief The Settings Editor example shows how Qt's standard settings support is used in an
-    application by providing an editor that enables the user to view the settings for
-    installed applications, and modify those that can be edited.
-
-    \image settingseditor-example.png
-*/

examples/widgets/tools/CMakeLists.txt

@@ -4,7 +4,6 @@
 qt_internal_add_example(completer)
 qt_internal_add_example(customcompleter)
 qt_internal_add_example(regularexpression)
-qt_internal_add_example(settingseditor)
 qt_internal_add_example(styleplugin)
 qt_internal_add_example(treemodelcompleter)
 qt_internal_add_example(undoframework)

examples/widgets/tools/settingseditor/CMakeLists.txt

@@ -1,40 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: BSD-3-Clause
-
-cmake_minimum_required(VERSION 3.16)
-project(settingseditor LANGUAGES CXX)
-
-if(NOT DEFINED INSTALL_EXAMPLESDIR)
-    set(INSTALL_EXAMPLESDIR "examples")
-endif()
-
-set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/tools/settingseditor")
-
-find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
-
-qt_standard_project_setup()
-
-qt_add_executable(settingseditor
-    locationdialog.cpp locationdialog.h
-    main.cpp
-    mainwindow.cpp mainwindow.h
-    settingstree.cpp settingstree.h
-    variantdelegate.cpp variantdelegate.h
-)
-
-set_target_properties(settingseditor PROPERTIES
-    WIN32_EXECUTABLE TRUE
-    MACOSX_BUNDLE TRUE
-)
-
-target_link_libraries(settingseditor PRIVATE
-    Qt6::Core
-    Qt6::Gui
-    Qt6::Widgets
-)
-
-install(TARGETS settingseditor
-    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
-    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
-    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
-)

examples/widgets/tools/tools.pro

@@ -4,7 +4,6 @@ SUBDIRS       = \
                 customcompleter \
                 echoplugin \
                 regularexpression \
-                settingseditor \
                 styleplugin \
                 treemodelcompleter \
                 undoframework

src/corelib/io/qsettings.cpp

@@ -2121,10 +2121,6 @@ void QConfFileSettingsPrivate::ensureSectionParsed(QConfFile *confFile,
     as QString. The numeric value can be recovered using \l QString::toInt(), \l
     QString::toDouble() and related functions.
 
-    The \l{tools/settingseditor}{Settings Editor} example lets you
-    experiment with different settings location and with fallbacks
-    turned on or off.
-
     \section1 Restoring the State of a GUI Application
 
     QSettings is often used to store the state of a GUI
@@ -2365,7 +2361,7 @@ void QConfFileSettingsPrivate::ensureSectionParsed(QConfFile *confFile,
 
     \endlist
 
-    \sa QVariant, QSessionManager, {Settings Editor Example}
+    \sa QVariant, QSessionManager
 */
 
 /*! \enum QSettings::Status

src/widgets/itemviews/qitemdelegate.cpp

@@ -282,7 +282,7 @@ QSizeF QItemDelegatePrivate::doTextLayout(int lineWidth) const
     the style for drawing.
 
     \sa {Delegate Classes}, QStyledItemDelegate, QAbstractItemDelegate,
-        {Spin Box Delegate Example}, {Settings Editor Example}
+        {Spin Box Delegate Example}
 */
 
 /*!

src/widgets/itemviews/qtreewidget.cpp

@@ -2453,7 +2453,7 @@ void QTreeWidgetPrivate::dataChanged(const QModelIndex &topLeft,
   whether sorting is enabled.
 
   \sa QTreeWidgetItem, QTreeWidgetItemIterator, QTreeView,
-  {Model/View Programming}, {Settings Editor Example}
+  {Model/View Programming}
 */
 
 /*!

tests/manual/examples/widgets/tools/settingseditor/CMakeLists.txt

@@ -0,0 +1,14 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+qt_internal_add_manual_test(settingseditor
+    SOURCES
+        locationdialog.cpp locationdialog.h
+        main.cpp
+        mainwindow.cpp mainwindow.h
+        settingstree.cpp settingstree.h
+        variantdelegate.cpp variantdelegate.h
+    LIBRARIES
+        Qt::Widgets
+)