Remove scxml pinball example

While an admirable state machine implementation in its own right,
perhaps doesn't provide adequate unique demonstrative value.

Task-number: QTBUG-111090
Change-Id: I47c1392bf5ac30f7b0b8a46b5539cdd333d77610
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
(cherry picked from commit 74428c29dc8c81d17e1a666bd271572206ca7e97)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

18 files changed, 0 insertions, 1648 deletions

diff --git a/examples/scxml/CMakeLists.txt b/examples/scxml/CMakeLists.txt
index 6b0ce37..a0f3867 100644
--- a/examples/scxml/CMakeLists.txt
+++ b/examples/scxml/CMakeLists.txt
@@ -15,7 +15,6 @@ if(TARGET Qt::Widgets)
             qt_internal_add_example(mediaplayer-widgets-dynamic)
         endif()
         qt_internal_add_example(calculator-widgets)
-        qt_internal_add_example(pinball)
         qt_internal_add_example(sudoku)
     endif()
 endif()
diff --git a/examples/scxml/pinball/CMakeLists.txt b/examples/scxml/pinball/CMakeLists.txt
deleted file mode 100644
index e80c9dd..0000000
--- a/examples/scxml/pinball/CMakeLists.txt
+++ /dev/null
@@ -1,44 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: BSD-3-Clause
-
-cmake_minimum_required(VERSION 3.16)
-project(pinball LANGUAGES CXX)
-
-set(CMAKE_AUTOMOC ON)
-set(CMAKE_AUTOUIC ON)
-
-if(NOT DEFINED INSTALL_EXAMPLESDIR)
-    set(INSTALL_EXAMPLESDIR "examples")
-endif()
-
-set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/scxml/pinball")
-
-find_package(Qt6 REQUIRED COMPONENTS Core Gui Scxml Widgets)
-
-qt_add_executable(pinball
-    main.cpp
-    mainwindow.cpp mainwindow.h mainwindow.ui
-)
-
-set_target_properties(pinball PROPERTIES
-    WIN32_EXECUTABLE TRUE
-    MACOSX_BUNDLE TRUE
-)
-
-target_link_libraries(pinball PUBLIC
-    Qt::Core
-    Qt::Gui
-    Qt::Scxml
-    Qt::Widgets
-)
-
-# Statecharts:
-qt6_add_statecharts(pinball
-    pinball.scxml
-)
-
-install(TARGETS pinball
-    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
-    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
-    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
-)
diff --git a/examples/scxml/pinball/doc/images/pinball-statechart-global.png b/examples/scxml/pinball/doc/images/pinball-statechart-global.png
deleted file mode 100644
index 630c678..0000000
--- a/examples/scxml/pinball/doc/images/pinball-statechart-global.png
+++ /dev/null
diff --git a/examples/scxml/pinball/doc/images/pinball-statechart-guicontrol.png b/examples/scxml/pinball/doc/images/pinball-statechart-guicontrol.png
deleted file mode 100644
index b79e343..0000000
--- a/examples/scxml/pinball/doc/images/pinball-statechart-guicontrol.png
+++ /dev/null
diff --git a/examples/scxml/pinball/doc/images/pinball-statechart-internalstate.png b/examples/scxml/pinball/doc/images/pinball-statechart-internalstate.png
deleted file mode 100644
index 3bd9d1b..0000000
--- a/examples/scxml/pinball/doc/images/pinball-statechart-internalstate.png
+++ /dev/null
diff --git a/examples/scxml/pinball/doc/images/pinball-statechart-logicalstate.png b/examples/scxml/pinball/doc/images/pinball-statechart-logicalstate.png
deleted file mode 100644
index 7a3395a..0000000
--- a/examples/scxml/pinball/doc/images/pinball-statechart-logicalstate.png
+++ /dev/null
diff --git a/examples/scxml/pinball/doc/images/pinball-statechart-modestate.png b/examples/scxml/pinball/doc/images/pinball-statechart-modestate.png
deleted file mode 100644
index e8b6df9..0000000
--- a/examples/scxml/pinball/doc/images/pinball-statechart-modestate.png
+++ /dev/null
diff --git a/examples/scxml/pinball/doc/images/pinball-statechart-onstate.png b/examples/scxml/pinball/doc/images/pinball-statechart-onstate.png
deleted file mode 100644
index db9459c..0000000
--- a/examples/scxml/pinball/doc/images/pinball-statechart-onstate.png
+++ /dev/null
diff --git a/examples/scxml/pinball/doc/images/pinball-statechart-workflow.png b/examples/scxml/pinball/doc/images/pinball-statechart-workflow.png
deleted file mode 100644
index dfcf3f2..0000000
--- a/examples/scxml/pinball/doc/images/pinball-statechart-workflow.png
+++ /dev/null
diff --git a/examples/scxml/pinball/doc/images/pinball.png b/examples/scxml/pinball/doc/images/pinball.png
deleted file mode 100644
index bbd390e..0000000
--- a/examples/scxml/pinball/doc/images/pinball.png
+++ /dev/null
diff --git a/examples/scxml/pinball/doc/src/pinball.qdoc b/examples/scxml/pinball/doc/src/pinball.qdoc
deleted file mode 100644
index aa12e42..0000000
--- a/examples/scxml/pinball/doc/src/pinball.qdoc
+++ /dev/null
@@ -1,478 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-    \example pinball
-    \title Qt SCXML Pinball Example
-    \ingroup examples-qtscxml
-    \brief Encapsulates the internal logic of an application in an SCXML file.
-
-    \e {Pinball} demonstrates a clear separation between the user interface,
-    which may be easily replaced, and the internal logic encapsulated in an
-    SCXML file, which could also be used with another user interface.
-
-    \include examples-run.qdocinc
-
-    \section1 Pinball Features
-
-    \image pinball.png Screenshot of the Pinball example
-
-    The Pinball example mimics a pinball game. The targets on the pinball table
-    are substituted by GUI controls, mainly by push buttons. Display elements,
-    including current score, highscore, and targets' lights, are substituted by
-    labels. Usually, the state of the targets' lights changes very often during
-    a game: the lights get turned on or off permanently or they blink at varying
-    speed indicating a game (or a certain target) entered a temporary state. The
-    state of each target light is presented as an enabled or a disabled label.
-    There is no real ball, but clicking a target's button represents hitting a
-    real pinball target with a ball.
-
-    Our pinball contains the following features:
-    \list
-    \li Initially and when the game ends, the pinball table
-        enters \c offState. In that state, all lights on the table
-        blink slowly (at intervals of 1 second).
-    \li After clicking the \uicontrol START button, the pinball table
-        enters \c onState. All lights are turned off and the
-        pinball table is ready to be played.
-    \li When the table is in \c onState and the players
-        click the \uicontrol {BALL OUT} button, the game ends
-        and enters \c offState. If the players' score is
-        higher than the current highscore, the highscore is updated.
-    \li The goal is to collect the \uicontrol JACKPOT. In order to do that,
-        the players must hit all five \uicontrol CRAZY letters twice.
-        They have unlimited time for hitting them for the first time.
-        However, after they have collected all the letters for the first time,
-        they enter the \c hurryState and must collect
-        them again within 5 seconds. If the time has passed and
-        the letters were not collected again, the players must
-        start collecting the letters from scratch.
-    \li Scores:
-        \list
-        \li 1.000 per letter hit when not in \c hurryState.
-        \li 10.000 per letter hit when in \c hurryState.
-        \li 100.000 bonus for all 5 letters when not in \c hurryState.
-        \li 1.000.000 bonus for all 5 letters when in \c hurryState
-            (\uicontrol JACKPOT).
-        \endlist
-    \li When not in \c hurryState, the letters already hit should blink
-        at intermediate speed (500ms). Letters not hit yet should stay off.
-    \li When in \c hurryState, the letters already hit should
-        stay on. Letters not hit yet should blink fast (200ms).
-        In addition, the \uicontrol HURRY light should blink at the same speed.
-    \li When the jackpot gets collected, the \uicontrol JACKPOT light should
-        stay on.
-    \endlist
-
-    \section1 SCXML Part: Internal Logic Description
-
-    The \e pinball.scxml file describes the internal logic implemented for the
-    pinball game. In this example, we have chosen the ECMAScript data model:
-
-    \quotefromfile pinball/pinball.scxml
-    \skipto scxml
-    \printuntil ecmascript
-
-    The ECMAScript data model enables declaring variables with initial values
-    that can be modified later. We declare the \c "highscore" and \c "score"
-    variables with the initial values of 0:
-
-    \printuntil </datamodel>
-
-    We define a root parallel state \c "global", with two child states,
-    \c guiControl and \c internalState, which are also parallel. Because the top
-    \c global state is parallel, all of its direct children are active when it
-    is active. In this example, the role of \c global is to collect the child
-    states and make them both active at a time.
-
-    \image pinball-statechart-global.png
-
-    \section2 Maintaining Light State
-
-    The \c guiControl element is responsible for maintaining the current
-    state of each light control that is visible on the pinball table.
-    Each light has a corresponding state.
-
-    \image pinball-statechart-guicontrol.png
-
-    For example, the light of the letter
-    \uicontrol C corresponds to the \c cLight state. Each light state has two
-    child states indicating whether the light is on or off:
-
-    \printuntil target="cLightOn"
-    \printuntil /^\ {12}<\//
-
-    As mentioned before, the \c guiControl state is always active, and since
-    it is of parallel type, all its direct children are always active too.
-    Therefore, the \c cLight state is always active. However,
-    only one of its children, \c cLightOn or \c cLightOff, is active at a time.
-    The same applies to the other children of the \c guiControl state.
-    In addition, we define transitions between on and off substates. For example,
-    whenever the active state is \c cLightOn and a \c turnOffC event is received,
-    we change the active substate of \c cLight to \c cLightOff.
-    Whenever the active state is \c cLightOff and we receive a \c turnOnC event,
-    we change the active substate of \c cLight to \c cLightOn.
-
-    In our application, we use instances of QLabel class in C++
-    to represent real lights on the table. When the light transitions
-    into the \e on or \e off state, we enable or disable the particular label
-    accordingly. The connection between the state machine and the GUI
-    part of the application will be shown in the \l {cpp}{C++ code} later on. For now,
-    it is enough to realize that changes to active states inside
-    the state machine will serve as the external interface of the state machine
-    that the other parts of the application (such as the GUI part) can listen to.
-
-    All of the mentioned events that switch the state of a light
-    will be generated by this state machine inside the \c internalState
-    in reaction to running timers or external triggers.
-
-    \section2 Maintaining Game State
-
-    The \c internalState state consists of two main parts: \c logicalState and \c workflow.
-
-    \image pinball-statechart-internalstate.png
-
-    The \c logicalState state holds the definitions for the modes that the game is able
-    to go into and for the logical states of collected targets. The \c workflow state
-    implements a generator for light blinking and calculates most of the new states
-    the machine should go into depending on incoming events and on currently active states.
-    As mentioned already, \c internalState is always active, and since
-    it is of a parallel type, \c logicalState and \c workflow are always active too.
-
-    \section2 Maintaining Logical State of Buttons
-
-    The \c logicalState state consist of two parts: \c letterState and \c modeState.
-
-    \image pinball-statechart-logicalstate.png
-
-    As previously mentioned, \c logicalState is always active, and since
-    it is of parallel type, the \c letterState and \c modeState children are always
-    active too. Now let us look at the first part, the \c letterState, which contains
-    one parallel \c lettersState:
-
-    \quotefromfile pinball/pinball.scxml
-    \skipto letterState
-    \printuntil lettersState
-    \printuntil letter.R
-    \dots 28
-    \skipto /^\ {24}<\//
-    \printuntil letter.A
-    \dots 28
-    \skipto /^\ {24}<\//
-    \printuntil letter.Z
-    \dots 28
-    \skipto /^\ {24}<\//
-    \printuntil letter.Y
-    \dots 28
-    \skipto /^\ {24}<\//
-    \printuntil /^\ {16}<\//
-
-    The \c lettersState state maintains the logical state of the buttons pretending to
-    be targets that were clicked by the players. The letter state for the letter
-    \uicontrol C holds whether the target for the letter \uicontrol C was hit,
-    while the light state for the letter \uicontrol C holds whether the light
-    for the target for the letter \uicontrol C should be currently on or off.
-    In a real pinball game, these states are usually orthogonal,
-    which means that if you have not hit a target yet, the target is blinking,
-    indicating that it is currently worth hitting. This blinking
-    means that the light state switches between on and off at short intervals,
-    while the target state is continuously off, because it has not been hit yet.
-    The author of a pinball table can decide that
-    after a target is hit (that is, after the target state switches to on)
-    the target's light is continuously turned off or on or the intervals between
-    lights blinking become shorter or longer.
-
-    As mentioned before, \c letterState is always active, which means
-    that its only child \c lettersState should always be active too. However,
-    there is one exception: for a short while the \c lettersState may
-    end up being \e {not active}. This happens when the transition for
-    \c lettersState is being performed. This transition is triggered when
-    the \c resetLetters event occurs, and it instructs the state machine
-    to exit \c lettersState and all its descendant states and reenter
-    \c lettersState and set up all its descendant states with their initial states.
-    In short, the \c resetLetters event resets the \c lettersState and all its
-    descendant states to the default configuration.
-
-    The \c lettersState contains five direct substates that
-    correspond to five different letters. The content for other letters' states
-    than C is not shown here, but it is analogous to the content for C's state.
-
-    The \c {letter.C} state contains two substates reflecting its off and on states:
-    \c cLetterOff and \c cLetterOn. The \c {letter.C} state inside its parallel
-    parent \c lettersState is always active (under the condition that
-    \c lettersState is active, as described before). However,
-    only one of its child states is active at a time: \c cLetterOff or \c cLetterOn.
-    The initial substate of the \c {letter.C} state is \c cLetterOff meaning
-    that whenever the \c {letter.C} state is being activated (which happens
-    initially and after the \c resetLetters event) its active
-    substate will be set to \c cLetterOff.
-
-    The \c cLetterOff state defines a transition, which will be triggered by
-    the \c {cLetterTriggered} event. This transition activates \c cLetterOn,
-    the other child of \c {letter.C}, only when the machine is in \c onState
-    (that is, when the pinball game is running).
-    The \c {cLetterTriggered} event is expected to be an event posted into the state machine
-    from outside of the state machine. This event should be generated when
-    the ball hits the letter \uicontrol C target. In our example we mimic
-    it by the clicking the letter \uicontrol C button.
-
-    The \c cLetterOn state is defined as a final state, which means that
-    whenever this state is activated the \c {done.state.letter.C} event
-    will be automatically posted by the state machine. This event will be used
-    later for updating the current score.
-
-    Moreover, when all \c lettersState children reach their final state,
-    the state machine will automatically post the \c {done.state.lettersState} event.
-    This event will be used later, too, for updating the current score
-    and for turning on or off the hurry state.
-
-    \section2 Maintaining Game Modes
-
-    The \c modeState state consists of two substates, \c offState and \c onState.
-
-    \image pinball-statechart-modestate.png
-
-    The \c offState state describes what should happen before the pinball game
-    is started and when it is over,
-    while \c onState represents the logic appropriate for the active game.
-
-    \quotefromfile pinball/pinball.scxml
-    \skipto offState
-    \printuntil /^\ {20}<\//
-
-    When the pinball application starts or a game ends, the machine goes into
-    \c offState. Entering that state invokes some actions, which are
-    enclosed inside an \c <onentry> element. First, we update the \c highScore
-    variable in case the current \c highScore value is less than current \c score value.
-    This is being checked inside the \c "cond" attribute of the \c <if> element
-    (note that we need to escape the "<" character with "&lt;").
-    Even in the \c off state, we want to show the last reached score,
-    so we do not clear it here; we will do that when we enter the \c on state.
-    Next, we raise two events: \c resetLetters to logically reset
-    all letters that might have been hit during the last game and \c update
-    to immediately activate the blinking and updating of all lights.
-    When the machine is in \c offState, it is ready to transition into the
-    \c onState if only the \c startTriggered event occurs, which is described
-    by the <transition> element. This event is expected to be generated externally
-    after clicking the \uicontrol START button on the pinball table.
-
-    \skipto onState
-    \printuntil /^\ {20}<\//
-
-    \section2 Game On
-
-    When the state machine enters \c onState, it first clears the current score
-    variable. The \c onState state is of the parallel type and has two direct child states:
-    \c hurryState and \c jackpotState. They are active as long as
-    their parent, \c onState, is active. Both \c hurryState and \c jackpotState
-    contain two substates that reflect their off and on states.
-    Only one substate of \c hurryState and one substate of \c jackpotState
-    can be active at a time. Initially, the off substates are active.
-
-    \image pinball-statechart-onstate.png
-
-    Whenever we enter \c hurryStateOff or \c hurryStateOn, we generate the same
-    two events we generate when entering the \c onState state: \c resetLetters and
-    \c update. In addition, when we enter the \c hurryStateOn state, we send a delayed
-    event, \c goToHurryOff, with a delay of five seconds, marked with \c hurryId.
-    This means that after five seconds we just
-    switch the state back to \c hurryStateOff without granting the bonus points.
-    In this way, we implement the five-second hurry feature of the pinball table.
-    We also define transitions from \c hurryStateOff to \c hurryStateOn when the
-    \c goToHurryOn event occurs and from \c hurryStateOn to \c hurryStateOff
-    when the \c goToHurryOff event occurs. When we exit the \c hurryStateOn
-    state, we cancel the possibly pending delayed event that was marked with
-    \c hurryId. This is important in case the five seconds have not elapsed yet,
-    but players have collected all the five letters in the hurry state. We then
-    collect the jackpot and want the pending timer to finish.
-
-    The substates of \c jackpotState generate the request to update the state
-    of lights. The \c jackpotStateOff state defines the transition to \c jackpotStateOn
-    when the \c goForJackpot event occurs. The opposite transition is not
-    needed, because when the jackpot gets collected, the corresponding light
-    remains lit until the end of game. When a new game starts, the \c jackpotState
-    is entered again which causes its initial active substate to be
-    \c jackpotStateOff.
-
-    In addition, the \c onState state defines one transition in reaction to the
-    \c ballOutTriggered event which instructs the machine to go into the \c offState.
-    The \c ballOutTriggered event is expected to be an event posted into the state machine
-    from outside of the state machine. This event should be generated when
-    the ball gets out of playing area of the table. In our example we mimic
-    it by the clicking \uicontrol {BALL OUT} button. Posting the event from outside of state
-    machine will be shown in the \l{cpp}{C++ code} later on.
-
-    \section2 Generating Blinking Lights
-
-    The \c workflow state is responsible for generating the blinking lights. The
-    generator is defined in its \c lightImpulseGenerator substate. In addition,
-    it is responsible for reacting to events that have been posted so far from
-    the other parts of the state machine.
-
-    \quotefromfile pinball/pinball.scxml
-    \skipto workflow
-    \printuntil done.state.letter.*
-    \dots 20
-    \skipto /^\ {16}<\//
-    \printuntil done.state.lettersState
-    \dots 20
-    \skipto /^\ {16}<\//
-    \printuntil updateLights
-    \dots 20
-    \skipto /^\ {16}<\//
-    \printuntil updateLightsAccordingToLettersState
-    \dots 20
-    \skipto /^\ {16}<\//
-    \printuntil turnOnLights
-    \dots 20
-    \skipto /^\ {16}<\//
-    \printuntil turnOffLights
-    \dots 20
-    \skipto /^\ {16}<\//
-    \printuntil /^\ {12}<\//
-
-    The \c lightImpulseGenerator contains two child states:
-    \c lightImpulseOn and \c lightImpulseOff, with only one active at a time.
-
-    \image pinball-statechart-workflow.png
-
-    Whenever the delayed \c lightImpulse event is being delivered, it immediately
-    causes the transition from \c lightImpluseOn into \c lightImpulseOff or vice versa,
-    depending on the state the machine was in. In effect, the \c lightImpulseGenerator
-    toggles between its on and off state. These transitions are defined inside
-    \c lightImpulseGenerator, so it means that during this toggling the machine
-    also exits \c lightImpulseGenerator and reenters it immediately afterwards.
-    Entering \c lightImpulseGenerator causes the generation of the \c update event.
-    The \c update event triggers a targetless transition and posts two other
-    events: \c scheduleNewImpulse and \c updateLights. The first one,
-    \c scheduleNewImpulse, returns back to the \c lightImpulseGenerator, which
-    posts a delayed \c lightImpulse event. After the delay,
-    the \c lightImpulse event gets delivered back to \c lightImpulseGenerator,
-    which causes it to toggle its substate again. In this way, the machine
-    enters into a cycle. The current delay of the \c lightImpulse
-    event depends on the state in which the machine was in the time of posting
-    the delayed event. If a \c scheduleNewImpulse event occurs on demand, before
-    the next delayed \c lightImpulse event gets delivered, we cancel any
-    possible pending events.
-
-    \quotefromfile pinball/pinball.scxml
-    \skipto workflow
-    \skipto done.state.letter.*
-    \printuntil /^\ {16}<\//
-    \printuntil /^\ {16}<\//
-
-    Whenever we receive the event the name of which matches the
-    \c {done.state.letter.*}, we update the current score.
-    When the machine enters the final substate of the \c {letter.C},
-    it emits the \c {done.state.letter.C} event. The same happens for
-    all other letters we have previously defined. We capture the events for all
-    letters, that is why we have used an asterisk
-    after a dot in the event name.
-    The transition above is targetless, since we just
-    listen for matching events and update the internal data accordingly
-    without changing any active state. The new score is being
-    increased by 1.000 or 10.000 points, depending on whether we currently are
-    in \c hurryStateOff or \c hurryStateOn.
-    After the score is updated, we generate the \c updateLights event
-    in order to immediately update the letters' lights accordingly.
-    We do not generate the \c update event here, since we do not want to toggle
-    the light impulse now, but just update the lights according to
-    the current impulse state.
-
-    We also intercept the \c {done.state.lettersState} event,
-    which is being generated when all the letters have been hit.
-    Depending on which state we are currently in, we grant the players either
-    a small bonus of 100.000 or a big one of 1.000.000 (jackpot).
-    In addition, we toggle the \c hurryState substate by
-    sending the \c goToHurryOn or \c goToHurryOff event.
-    When all letters have been collected while in \c hurryStateOn,
-    we also raise the \c goForJackpot event which instructs
-    the machine to activate the \c jackpotStateOn.
-
-    \skipto updateLights
-    \printuntil /^\ {16}<\//
-    \printuntil updateLightsAccordingToLettersState
-    \printuntil /^\ {16}<\//
-    \printuntil turnOnLights
-    \printuntil /^\ {16}<\//
-    \printuntil turnOffLights
-    \printuntil /^\ {16}<\//
-
-    When we receive the \c updateLights event, we first want to send a
-    \c updateScore event outside of the state machine. We pass
-    the current values of the \c highScore and \c score variables to the event.
-    This event is received by the C++ part.
-
-    Next, depending on whether we are in \c jackpotStateOn or \c jackpotStateOff,
-    we send the \c turnOnJackpot or the \c turnOffJackpot event,
-    which instructs the \c guiControl state to transition to
-    \c jackpotLightOn or \c jackpotLightOff, respectively.
-
-    When the machine is in \e idle state, (that is, in the off state)
-    or when the game is on, but no interaction occurs,
-    the \c updateLights event is delivered periodically
-    during the game, each time with the \c lightImpulseOn or
-    \c lightImpulseOff state toggled. Depending on the
-    current state of the light impulse and on the active state (\c offState,
-    \c hurryStateOff or \c hurryStateOn), we turn on or off all the lights
-    according to the description of the pinball table.
-
-    \section1 GUI Part: User Interface Description
-
-    The GUI part of the application consists of a \e mainwindow.ui
-    file which describes the static user interface of the game.
-
-    \target cpp
-    \section1 C++ Part: Glue GUI with SCXML
-
-    The C++ part of the application consists of a
-    \c MainWindow class which glues the GUI part with the SCXML part.
-    The class is declared in \e mainwindow.h.
-
-    \quotefromfile pinball/mainwindow.h
-    \skipto MainWindow
-    \printuntil };
-
-    The \c MainWindow class holds the pointer to the
-    \c {QScxmlStateMachine *m_machine} which is the state machine
-    class automatically generated by Qt out of SCMXL file
-    and the pointer to the \c {Ui::MainWindow *m_ui} which
-    describes the GUI part. It also declares two helper methods.
-
-    \quotefromfile pinball/mainwindow.cpp
-    \skipto #include
-    \printuntil /\}$/
-
-    The constructor of the \c MainWindow class
-    instantiates the GUI part of the application
-    and stores the pointer to the passed \c QScxmlStateMachine.
-    It also initializes the GUI part and glues the
-    GUI part to the state machine by connecting
-    their communication interfaces together.
-
-    The \c initAndConnect() method connects
-    the state with the corresponding GUI widget by
-    binding its activity with the enabling of the widget,
-    so that whenever the state is active, its corresponding
-    widget is enabled and whenever the state is inactive,
-    the widget is disabled. We do that for all lights, targets,
-    and description labels.
-
-    We also intercept the \c updateScore event sent by the state machine,
-    in order to update the score displays with the values
-    passed with the event.
-
-    The info about hitting any GUI target needs to be passed
-    to the state machine and we do that by connecting
-    all target buttons' \c clicked signals to the lambda expressions
-    which submit the corresponding event into the state machine.
-
-    \quotefromfile pinball/main.cpp
-    \skipto #include
-    \printuntil /\}$/
-
-    In the \c main() function in the \e main.cpp file, we instantiate the
-    \c app application object, \c Pinball state machine,
-    and \c MainWindow GUI class. We initialize and start the state machine,
-    show the main window, and execute the application.
-*/
diff --git a/examples/scxml/pinball/main.cpp b/examples/scxml/pinball/main.cpp
deleted file mode 100644
index b2c4046..0000000
--- a/examples/scxml/pinball/main.cpp
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include "mainwindow.h"
-#include "pinball.h"
-
-#include <QApplication>
-
-int main(int argc, char **argv)
-{
-    QApplication app(argc, argv);
-
-    Pinball machine;
-    MainWindow mainWindow(&machine);
-
-    machine.start();
-    mainWindow.show();
-    return app.exec();
-}
diff --git a/examples/scxml/pinball/mainwindow.cpp b/examples/scxml/pinball/mainwindow.cpp
deleted file mode 100644
index c02f435..0000000
--- a/examples/scxml/pinball/mainwindow.cpp
+++ /dev/null
@@ -1,86 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include "mainwindow.h"
-#include "ui_mainwindow.h"
-
-#include <QScxmlStateMachine>
-#include <QStringListModel>
-
-QT_USE_NAMESPACE
-
-MainWindow::MainWindow(QScxmlStateMachine *machine, QWidget *parent) :
-    QWidget(parent),
-    m_ui(new Ui::MainWindow),
-    m_machine(machine)
-{
-    m_ui->setupUi(this);
-
-    // lights
-    initAndConnect(QLatin1String("cLightOn"), m_ui->cLabel);
-    initAndConnect(QLatin1String("rLightOn"), m_ui->rLabel);
-    initAndConnect(QLatin1String("aLightOn"), m_ui->aLabel);
-    initAndConnect(QLatin1String("zLightOn"), m_ui->zLabel);
-    initAndConnect(QLatin1String("yLightOn"), m_ui->yLabel);
-    initAndConnect(QLatin1String("hurryLightOn"), m_ui->hurryLabel);
-    initAndConnect(QLatin1String("jackpotLightOn"), m_ui->jackpotLabel);
-    initAndConnect(QLatin1String("gameOverLightOn"), m_ui->gameOverLabel);
-
-    // help labels
-    initAndConnect(QLatin1String("offState"), m_ui->offStateLabel);
-    initAndConnect(QLatin1String("hurryStateOff"), m_ui->normalStateLabel);
-    initAndConnect(QLatin1String("hurryStateOn"), m_ui->hurryStateLabel);
-    initAndConnect(QLatin1String("jackpotStateOn"), m_ui->jackpotStateLabel);
-
-    // context enablement
-    initAndConnect(QLatin1String("offState"), m_ui->startButton);
-    initAndConnect(QLatin1String("onState"), m_ui->cButton);
-    initAndConnect(QLatin1String("onState"), m_ui->rButton);
-    initAndConnect(QLatin1String("onState"), m_ui->aButton);
-    initAndConnect(QLatin1String("onState"), m_ui->zButton);
-    initAndConnect(QLatin1String("onState"), m_ui->yButton);
-    initAndConnect(QLatin1String("onState"), m_ui->ballOutButton);
-
-    // datamodel update
-    m_machine->connectToEvent("updateScore", [this] (const QScxmlEvent &event) {
-        const QVariant data = event.data();
-        const QString highScore = data.toMap().value("highScore").toString();
-        m_ui->highScoreLabel->setText(highScore);
-        const QString score = data.toMap().value("score").toString();
-        m_ui->scoreLabel->setText(score);
-    });
-
-    // gui interaction
-    connect(m_ui->cButton, &QAbstractButton::clicked,
-            [this] { m_machine->submitEvent("cLetterTriggered");
-            });
-    connect(m_ui->rButton, &QAbstractButton::clicked,
-            [this] { m_machine->submitEvent("rLetterTriggered");
-            });
-    connect(m_ui->aButton, &QAbstractButton::clicked,
-            [this] { m_machine->submitEvent("aLetterTriggered");
-            });
-    connect(m_ui->zButton, &QAbstractButton::clicked,
-            [this] { m_machine->submitEvent("zLetterTriggered");
-            });
-    connect(m_ui->yButton, &QAbstractButton::clicked,
-            [this] { m_machine->submitEvent("yLetterTriggered");
-            });
-    connect(m_ui->startButton, &QAbstractButton::clicked,
-            [this] { m_machine->submitEvent("startTriggered");
-            });
-    connect(m_ui->ballOutButton, &QAbstractButton::clicked,
-            [this] { m_machine->submitEvent("ballOutTriggered");
-            });
-}
-
-MainWindow::~MainWindow()
-{
-    delete m_ui;
-}
-
-void MainWindow::initAndConnect(const QString &state, QWidget *widget)
-{
-    widget->setEnabled(m_machine->isActive(state));
-    m_machine->connectToState(state, widget, &QWidget::setEnabled);
-}
diff --git a/examples/scxml/pinball/mainwindow.h b/examples/scxml/pinball/mainwindow.h
deleted file mode 100644
index fdf51df..0000000
--- a/examples/scxml/pinball/mainwindow.h
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
-
-#include <QWidget>
-
-QT_BEGIN_NAMESPACE
-namespace Ui {
-class MainWindow;
-}
-class QScxmlStateMachine;
-QT_END_NAMESPACE
-
-
-class MainWindow : public QWidget
-{
-    Q_OBJECT
-
-public:
-    explicit MainWindow(QScxmlStateMachine *machine, QWidget *parent = nullptr);
-    ~MainWindow();
-
-private:
-    void initAndConnect(const QString &state, QWidget *widget);
-    QT_PREPEND_NAMESPACE(Ui::MainWindow) *m_ui;
-    QScxmlStateMachine *m_machine;
-};
-
-#endif // MAINWINDOW_H
diff --git a/examples/scxml/pinball/mainwindow.ui b/examples/scxml/pinball/mainwindow.ui
deleted file mode 100644
index 601c23e..0000000
--- a/examples/scxml/pinball/mainwindow.ui
+++ /dev/null
@@ -1,663 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>MainWindow</class>
- <widget class="QWidget" name="MainWindow">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>476</width>
-    <height>458</height>
-   </rect>
-  </property>
-  <layout class="QGridLayout" name="gridLayout">
-   <item row="0" column="0" colspan="5">
-    <layout class="QHBoxLayout" name="horizontalLayout">
-     <item>
-      <widget class="QLabel" name="highScoreTextLabel">
-       <property name="sizePolicy">
-        <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-         <horstretch>0</horstretch>
-         <verstretch>0</verstretch>
-        </sizepolicy>
-       </property>
-       <property name="text">
-        <string>HIGH SCORE:</string>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QLabel" name="highScoreLabel">
-       <property name="sizePolicy">
-        <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-         <horstretch>0</horstretch>
-         <verstretch>0</verstretch>
-        </sizepolicy>
-       </property>
-       <property name="text">
-        <string>0</string>
-       </property>
-       <property name="alignment">
-        <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QLabel" name="scoreTextLabel">
-       <property name="sizePolicy">
-        <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-         <horstretch>0</horstretch>
-         <verstretch>0</verstretch>
-        </sizepolicy>
-       </property>
-       <property name="text">
-        <string>SCORE:</string>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QLabel" name="scoreLabel">
-       <property name="sizePolicy">
-        <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-         <horstretch>0</horstretch>
-         <verstretch>0</verstretch>
-        </sizepolicy>
-       </property>
-       <property name="text">
-        <string>0</string>
-       </property>
-       <property name="alignment">
-        <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-       </property>
-      </widget>
-     </item>
-    </layout>
-   </item>
-   <item row="0" column="5" rowspan="7">
-    <layout class="QVBoxLayout" name="verticalLayout">
-     <item>
-      <spacer name="verticalSpacer">
-       <property name="orientation">
-        <enum>Qt::Vertical</enum>
-       </property>
-       <property name="sizeHint" stdset="0">
-        <size>
-         <width>1</width>
-         <height>98</height>
-        </size>
-       </property>
-      </spacer>
-     </item>
-     <item>
-      <widget class="QToolButton" name="startButton">
-       <property name="sizePolicy">
-        <sizepolicy hsizetype="Fixed" vsizetype="Minimum">
-         <horstretch>0</horstretch>
-         <verstretch>0</verstretch>
-        </sizepolicy>
-       </property>
-       <property name="text">
-        <string>^
-^
-^
-
-S
-T
-A
-R
-T
-
-^
-^
-^</string>
-       </property>
-      </widget>
-     </item>
-    </layout>
-   </item>
-   <item row="1" column="0" colspan="5">
-    <widget class="QLabel" name="gameOverLabel">
-     <property name="palette">
-      <palette>
-       <active>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>255</red>
-           <green>0</green>
-           <blue>4</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </active>
-       <inactive>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>255</red>
-           <green>0</green>
-           <blue>4</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </inactive>
-       <disabled>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>190</red>
-           <green>190</green>
-           <blue>190</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </disabled>
-      </palette>
-     </property>
-     <property name="font">
-      <font>
-       <pointsize>20</pointsize>
-       <weight>75</weight>
-       <bold>true</bold>
-      </font>
-     </property>
-     <property name="text">
-      <string>GAME OVER</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item row="2" column="0" colspan="5">
-    <widget class="QLabel" name="jackpotLabel">
-     <property name="palette">
-      <palette>
-       <active>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>55</red>
-           <green>200</green>
-           <blue>191</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </active>
-       <inactive>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>55</red>
-           <green>200</green>
-           <blue>191</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </inactive>
-       <disabled>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>190</red>
-           <green>190</green>
-           <blue>190</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </disabled>
-      </palette>
-     </property>
-     <property name="font">
-      <font>
-       <pointsize>20</pointsize>
-       <weight>75</weight>
-       <bold>true</bold>
-      </font>
-     </property>
-     <property name="text">
-      <string>JACKPOT!</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item row="3" column="0" colspan="5">
-    <widget class="QLabel" name="hurryLabel">
-     <property name="palette">
-      <palette>
-       <active>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>67</red>
-           <green>24</green>
-           <blue>97</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </active>
-       <inactive>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>67</red>
-           <green>24</green>
-           <blue>97</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </inactive>
-       <disabled>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>190</red>
-           <green>190</green>
-           <blue>190</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </disabled>
-      </palette>
-     </property>
-     <property name="font">
-      <font>
-       <pointsize>20</pointsize>
-       <weight>75</weight>
-       <bold>true</bold>
-      </font>
-     </property>
-     <property name="text">
-      <string>HURRY!</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item row="4" column="0">
-    <widget class="QLabel" name="cLabel">
-     <property name="palette">
-      <palette>
-       <active>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>7</red>
-           <green>0</green>
-           <blue>222</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </active>
-       <inactive>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>7</red>
-           <green>0</green>
-           <blue>222</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </inactive>
-       <disabled>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>190</red>
-           <green>190</green>
-           <blue>190</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </disabled>
-      </palette>
-     </property>
-     <property name="font">
-      <font>
-       <pointsize>20</pointsize>
-       <weight>75</weight>
-       <bold>true</bold>
-      </font>
-     </property>
-     <property name="text">
-      <string>C</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item row="4" column="1">
-    <widget class="QLabel" name="rLabel">
-     <property name="palette">
-      <palette>
-       <active>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>6</red>
-           <green>208</green>
-           <blue>36</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </active>
-       <inactive>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>6</red>
-           <green>208</green>
-           <blue>36</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </inactive>
-       <disabled>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>190</red>
-           <green>190</green>
-           <blue>190</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </disabled>
-      </palette>
-     </property>
-     <property name="font">
-      <font>
-       <pointsize>20</pointsize>
-       <weight>75</weight>
-       <bold>true</bold>
-      </font>
-     </property>
-     <property name="text">
-      <string>R</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item row="4" column="2">
-    <widget class="QLabel" name="aLabel">
-     <property name="palette">
-      <palette>
-       <active>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>238</red>
-           <green>17</green>
-           <blue>1</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </active>
-       <inactive>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>238</red>
-           <green>17</green>
-           <blue>1</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </inactive>
-       <disabled>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>190</red>
-           <green>190</green>
-           <blue>190</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </disabled>
-      </palette>
-     </property>
-     <property name="font">
-      <font>
-       <pointsize>20</pointsize>
-       <weight>75</weight>
-       <bold>true</bold>
-      </font>
-     </property>
-     <property name="text">
-      <string>A</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item row="4" column="3">
-    <widget class="QLabel" name="zLabel">
-     <property name="enabled">
-      <bool>true</bool>
-     </property>
-     <property name="palette">
-      <palette>
-       <active>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>230</red>
-           <green>10</green>
-           <blue>230</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </active>
-       <inactive>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>230</red>
-           <green>10</green>
-           <blue>230</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </inactive>
-       <disabled>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>190</red>
-           <green>190</green>
-           <blue>190</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </disabled>
-      </palette>
-     </property>
-     <property name="font">
-      <font>
-       <pointsize>20</pointsize>
-       <weight>75</weight>
-       <bold>true</bold>
-      </font>
-     </property>
-     <property name="text">
-      <string>Z</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item row="4" column="4">
-    <widget class="QLabel" name="yLabel">
-     <property name="palette">
-      <palette>
-       <active>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>239</red>
-           <green>224</green>
-           <blue>9</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </active>
-       <inactive>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>239</red>
-           <green>224</green>
-           <blue>9</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </inactive>
-       <disabled>
-        <colorrole role="WindowText">
-         <brush brushstyle="SolidPattern">
-          <color alpha="255">
-           <red>190</red>
-           <green>190</green>
-           <blue>190</blue>
-          </color>
-         </brush>
-        </colorrole>
-       </disabled>
-      </palette>
-     </property>
-     <property name="font">
-      <font>
-       <pointsize>20</pointsize>
-       <weight>75</weight>
-       <bold>true</bold>
-      </font>
-     </property>
-     <property name="text">
-      <string>Y</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item row="5" column="0">
-    <widget class="QPushButton" name="cButton">
-     <property name="text">
-      <string>C</string>
-     </property>
-    </widget>
-   </item>
-   <item row="5" column="1">
-    <widget class="QPushButton" name="rButton">
-     <property name="text">
-      <string>R</string>
-     </property>
-    </widget>
-   </item>
-   <item row="5" column="2">
-    <widget class="QPushButton" name="aButton">
-     <property name="text">
-      <string>A</string>
-     </property>
-    </widget>
-   </item>
-   <item row="5" column="3">
-    <widget class="QPushButton" name="zButton">
-     <property name="text">
-      <string>Z</string>
-     </property>
-    </widget>
-   </item>
-   <item row="5" column="4">
-    <widget class="QPushButton" name="yButton">
-     <property name="text">
-      <string>Y</string>
-     </property>
-    </widget>
-   </item>
-   <item row="6" column="0" colspan="5">
-    <widget class="QPushButton" name="ballOutButton">
-     <property name="text">
-      <string>BALL OUT</string>
-     </property>
-    </widget>
-   </item>
-   <item row="7" column="0" colspan="6">
-    <widget class="QLabel" name="offStateLabel">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-       <horstretch>0</horstretch>
-       <verstretch>0</verstretch>
-      </sizepolicy>
-     </property>
-     <property name="text">
-      <string>Press START to release the ball.</string>
-     </property>
-     <property name="wordWrap">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
-   <item row="8" column="0" colspan="6">
-    <widget class="QLabel" name="normalStateLabel">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-       <horstretch>0</horstretch>
-       <verstretch>0</verstretch>
-      </sizepolicy>
-     </property>
-     <property name="text">
-      <string>Try to hit all CRAZY letters. Watch out for ball and avoid BALL OUT since the game will end.</string>
-     </property>
-     <property name="wordWrap">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
-   <item row="9" column="0" colspan="6">
-    <widget class="QLabel" name="hurryStateLabel">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-       <horstretch>0</horstretch>
-       <verstretch>0</verstretch>
-      </sizepolicy>
-     </property>
-     <property name="text">
-      <string>Now you need to hurry. Quickly hit all CRAZY letters again to gather the extra JACKPOT bonus. You have only 5 seconds. Otherwise you will need to start from scratch.</string>
-     </property>
-     <property name="wordWrap">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
-   <item row="10" column="0" colspan="6">
-    <widget class="QLabel" name="jackpotStateLabel">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-       <horstretch>0</horstretch>
-       <verstretch>0</verstretch>
-      </sizepolicy>
-     </property>
-     <property name="text">
-      <string>You did that! You have collected JACKPOT! Congratulations. Now you can continue game until you BALL OUT.</string>
-     </property>
-     <property name="wordWrap">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
-  </layout>
- </widget>
- <resources/>
- <connections/>
-</ui>
diff --git a/examples/scxml/pinball/pinball.pro b/examples/scxml/pinball/pinball.pro
deleted file mode 100644
index 549010d..0000000
--- a/examples/scxml/pinball/pinball.pro
+++ /dev/null
@@ -1,19 +0,0 @@
-QT += widgets scxml
-
-CONFIG += c++11
-
-STATECHARTS = pinball.scxml
-
-SOURCES += \
-    main.cpp \
-    mainwindow.cpp
-
-FORMS += \
-    mainwindow.ui
-
-HEADERS += \
-    mainwindow.h
-
-# install
-target.path = $$[QT_INSTALL_EXAMPLES]/scxml/pinball
-INSTALLS += target
diff --git a/examples/scxml/pinball/pinball.scxml b/examples/scxml/pinball/pinball.scxml
deleted file mode 100644
index 7589a2c..0000000
--- a/examples/scxml/pinball/pinball.scxml
+++ /dev/null
@@ -1,306 +0,0 @@
-<?xml version="1.0" ?>
-<!--
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
--->
-<scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0"
-       name="Pinball" datamodel="ecmascript">
-    <datamodel>
-        <data id="highScore" expr="0"/>
-        <data id="score" expr="0"/>
-    </datamodel>
-    <parallel id="global">
-        <parallel id="guiControl">
-            <state id="cLight">
-                <state id="cLightOn">
-                    <transition event="turnOffC" target="cLightOff"/>
-                </state>
-                <state id="cLightOff">
-                    <transition event="turnOnC" target="cLightOn"/>
-                </state>
-            </state>
-            <state id="rLight">
-                <state id="rLightOn">
-                    <transition event="turnOffR" target="rLightOff"/>
-                </state>
-                <state id="rLightOff">
-                    <transition event="turnOnR" target="rLightOn"/>
-                </state>
-            </state>
-            <state id="aLight">
-                <state id="aLightOn">
-                    <transition event="turnOffA" target="aLightOff"/>
-                </state>
-                <state id="aLightOff">
-                    <transition event="turnOnA" target="aLightOn"/>
-                </state>
-            </state>
-            <state id="zLight">
-                <state id="zLightOn">
-                    <transition event="turnOffZ" target="zLightOff"/>
-                </state>
-                <state id="zLightOff">
-                    <transition event="turnOnZ" target="zLightOn"/>
-                </state>
-            </state>
-            <state id="yLight">
-                <state id="yLightOn">
-                    <transition event="turnOffY" target="yLightOff"/>
-                </state>
-                <state id="yLightOff">
-                    <transition event="turnOnY" target="yLightOn"/>
-                </state>
-            </state>
-            <state id="hurryLight">
-                <state id="hurryLightOn">
-                    <transition event="turnOffHurry" target="hurryLightOff"/>
-                </state>
-                <state id="hurryLightOff">
-                    <transition event="turnOnHurry" target="hurryLightOn"/>
-                </state>
-            </state>
-            <state id="jackpotLight">
-                <state id="jackpotLightOn">
-                    <transition event="turnOffJackpot" target="jackpotLightOff"/>
-                </state>
-                <state id="jackpotLightOff">
-                    <transition event="turnOnJackpot" target="jackpotLightOn"/>
-                </state>
-            </state>
-            <state id="gameOverLight">
-                <state id="gameOverLightOn">
-                    <transition event="turnOffGameOver" target="gameOverLightOff"/>
-                </state>
-                <state id="gameOverLightOff">
-                    <transition event="turnOnGameOver" target="gameOverLightOn"/>
-                </state>
-            </state>
-        </parallel>
-
-        <parallel id="internalState">
-            <parallel id="logicalState">
-                <state id="letterState">
-                    <parallel id="lettersState">
-                        <state id="letter.C">
-                            <state id="cLetterOff">
-                                <transition event="cLetterTriggered" cond="In('onState')" target="cLetterOn"/>
-                            </state>
-                            <final id="cLetterOn"/>
-                        </state>
-                        <state id="letter.R">
-                            <state id="rLetterOff">
-                                <transition event="rLetterTriggered" cond="In('onState')" target="rLetterOn"/>
-                            </state>
-                            <final id="rLetterOn"/>
-                        </state>
-                        <state id="letter.A">
-                            <state id="aLetterOff">
-                                <transition event="aLetterTriggered" cond="In('onState')" target="aLetterOn"/>
-                            </state>
-                            <final id="aLetterOn"/>
-                        </state>
-                        <state id="letter.Z">
-                            <state id="zLetterOff">
-                                <transition event="zLetterTriggered" cond="In('onState')" target="zLetterOn"/>
-                            </state>
-                            <final id="zLetterOn"/>
-                        </state>
-                        <state id="letter.Y">
-                            <state id="yLetterOff">
-                                <transition event="yLetterTriggered" cond="In('onState')" target="yLetterOn"/>
-                            </state>
-                            <final id="yLetterOn"/>
-                        </state>
-                        <transition event="resetLetters" target="lettersState"/>
-                    </parallel>
-                </state>
-                <state id="modeState">
-                    <state id="offState">
-                        <onentry>
-                            <if cond="highScore &lt; score">
-                                <assign location="highScore" expr="score"/>
-                            </if>
-                            <raise event="resetLetters"/>
-                            <raise event="update"/>
-                        </onentry>
-                        <transition event="startTriggered" target="onState"/>
-                    </state>
-                    <parallel id="onState">
-                        <onentry>
-                            <assign location="score" expr="0"/>
-                        </onentry>
-                        <state id="hurryState">
-                            <state id="hurryStateOff">
-                                <onentry>
-                                    <raise event="resetLetters"/>
-                                    <raise event="update"/>
-                                </onentry>
-                                <transition event="goToHurryOn" target="hurryStateOn"/>
-                            </state>
-                            <state id="hurryStateOn">
-                                <onentry>
-                                    <send event="goToHurryOff" id="hurryId" delay="5s"/>
-                                    <raise event="resetLetters"/>
-                                    <raise event="update"/>
-                                </onentry>
-                                <transition event="goToHurryOff" target="hurryStateOff"/>
-                                <onexit>
-                                    <cancel sendid="hurryId"/>
-                                </onexit>
-                            </state>
-                        </state>
-                        <state id="jackpotState">
-                            <state id="jackpotStateOff">
-                                <onentry>
-                                    <raise event="update"/>
-                                </onentry>
-                                <transition event="goForJackpot" target="jackpotStateOn"/>
-                            </state>
-                            <state id="jackpotStateOn">
-                                <onentry>
-                                    <raise event="update"/>
-                                </onentry>
-                            </state>
-                        </state>
-                        <transition event="ballOutTriggered" target="offState"/>
-                    </parallel>
-                </state>
-            </parallel>
-
-            <state id="workflow">
-                <state id="lightImpulseGenerator">
-                    <state id="lightImpulseOn"/>
-                    <state id="lightImpulseOff"/>
-
-                    <onentry>
-                        <raise event="update"/>
-                    </onentry>
-
-                    <transition event="scheduleNewImpulse">
-                        <cancel sendid="lightId"/>
-                        <if cond="In('offState')">
-                            <send event="lightImpulse" id="lightId" delay="1s"/>
-                        <elseif cond="In('hurryStateOff')"/>
-                            <send event="lightImpulse" id="lightId" delay="500ms"/>
-                        <else/>
-                            <send event="lightImpulse" id="lightId" delay="200ms"/>
-                        </if>
-                    </transition>
-
-                    <transition event="update">
-                        <raise event="scheduleNewImpulse"/>
-                        <raise event="updateLights"/>
-                    </transition>
-
-                    <transition event="lightImpulse" cond="In('lightImpulseOn')" target="lightImpulseOff"/>
-                    <transition event="lightImpulse" cond="In('lightImpulseOff')" target="lightImpulseOn"/>
-                </state>
-
-                <transition event="done.state.letter.*">
-                    <if cond="In('hurryStateOff')">
-                        <assign location="score" expr="score + 1000"/>
-                    <elseif cond="In('hurryStateOn')"/>
-                        <assign location="score" expr="score + 10000"/>
-                    </if>
-                    <raise event="updateLights"/>
-                </transition>
-
-                <transition event="done.state.lettersState">
-                    <if cond="In('hurryStateOff')">
-                        <assign location="score" expr="score + 100000"/>
-                        <raise event="goToHurryOn"/>
-                    <elseif cond="In('hurryStateOn')"/>
-                        <assign location="score" expr="score + 1000000"/>
-                        <raise event="goToHurryOff"/>
-                        <raise event="goForJackpot"/>
-                    </if>
-                </transition>
-
-                <transition event="updateLights">
-                    <send event="updateScore">
-                        <param name="highScore" expr="highScore"/>
-                        <param name="score" expr="score"/>
-                    </send>
-                    <if cond="In('jackpotStateOn')">
-                        <raise event="turnOnJackpot"/>
-                    <else/>
-                        <raise event="turnOffJackpot"/>
-                    </if>
-
-                    <if cond="In('lightImpulseOn')">
-                        <if cond="In('offState')">
-                            <raise event="turnOnLights"/>
-                            <raise event="turnOnHurry"/>
-                            <raise event="turnOnJackpot"/>
-                            <raise event="turnOnGameOver"/>
-                        <elseif cond="In('hurryStateOff')"/>
-                            <raise event="updateLightsAccordingToLettersState"/>
-                            <raise event="turnOffHurry"/>
-                            <raise event="turnOffGameOver"/>
-                        <else/>
-                            <raise event="turnOnLights"/>
-                            <raise event="turnOnHurry"/>
-                            <raise event="turnOffGameOver"/>
-                        </if>
-                    <else/>
-                        <if cond="In('offState')">
-                            <raise event="turnOffLights"/>
-                            <raise event="turnOffHurry"/>
-                            <raise event="turnOffJackpot"/>
-                        <elseif cond="In('hurryStateOff')"/>
-                            <raise event="turnOffLights"/>
-                        <else/>
-                            <raise event="updateLightsAccordingToLettersState"/>
-                        </if>
-                        <raise event="turnOffHurry"/>
-                        <raise event="turnOffGameOver"/>
-                    </if>
-                </transition>
-
-                <transition event="updateLightsAccordingToLettersState">
-                    <if cond="In('cLetterOn')">
-                        <raise event="turnOnC"/>
-                    <else/>
-                        <raise event="turnOffC"/>
-                    </if>
-                    <if cond="In('rLetterOn')">
-                        <raise event="turnOnR"/>
-                    <else/>
-                        <raise event="turnOffR"/>
-                    </if>
-                    <if cond="In('aLetterOn')">
-                        <raise event="turnOnA"/>
-                    <else/>
-                        <raise event="turnOffA"/>
-                    </if>
-                    <if cond="In('zLetterOn')">
-                        <raise event="turnOnZ"/>
-                    <else/>
-                        <raise event="turnOffZ"/>
-                    </if>
-                    <if cond="In('yLetterOn')">
-                        <raise event="turnOnY"/>
-                    <else/>
-                        <raise event="turnOffY"/>
-                    </if>
-                </transition>
-
-                <transition event="turnOnLights">
-                    <raise event="turnOnC"/>
-                    <raise event="turnOnR"/>
-                    <raise event="turnOnA"/>
-                    <raise event="turnOnZ"/>
-                    <raise event="turnOnY"/>
-                </transition>
-
-                <transition event="turnOffLights">
-                    <raise event="turnOffC"/>
-                    <raise event="turnOffR"/>
-                    <raise event="turnOffA"/>
-                    <raise event="turnOffZ"/>
-                    <raise event="turnOffY"/>
-                </transition>
-            </state>
-        </parallel>
-    </parallel>
-</scxml>
diff --git a/examples/scxml/scxml.pro b/examples/scxml/scxml.pro
index 2f80c60..974b0bb 100644
--- a/examples/scxml/scxml.pro
+++ b/examples/scxml/scxml.pro
@@ -6,7 +6,6 @@ qtHaveModule(widgets) {
     SUBDIRS +=  mediaplayer-widgets-static
     SUBDIRS +=  mediaplayer-widgets-dynamic
     SUBDIRS +=  calculator-widgets
-    SUBDIRS +=  pinball
     SUBDIRS +=  sudoku
 }