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| 2 | **
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| 3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | /*!
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| 43 | \example statemachine/eventtransitions
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| 44 | \title Event Transitions Example
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| 45 |
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| 46 | The Event Transitions example shows how to use event transitions, a
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| 47 | feature of \l{The State Machine Framework}.
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| 48 |
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| 49 | \snippet examples/statemachine/eventtransitions/main.cpp 0
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| 50 |
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| 51 | The \c Window class's constructors begins by creating a button.
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| 52 |
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| 53 | \snippet examples/statemachine/eventtransitions/main.cpp 1
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| 54 |
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| 55 | Two states, \c s1 and \c s2, are created; upon entry they will assign
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| 56 | "Outside" and "Inside" to the button's text, respectively.
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| 57 |
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| 58 | \snippet examples/statemachine/eventtransitions/main.cpp 2
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| 59 |
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| 60 | When the button receives an event of type QEvent::Enter and the state
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| 61 | machine is in state \c s1, the machine will transition to state \c s2.
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| 62 |
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| 63 | \snippet examples/statemachine/eventtransitions/main.cpp 3
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| 64 |
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| 65 | When the button receives an event of type QEvent::Leave and the state
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| 66 | machine is in state \c s2, the machine will transition back to state \c
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| 67 | s1.
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| 68 |
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| 69 | \snippet examples/statemachine/eventtransitions/main.cpp 4
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| 70 |
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| 71 | Next, the state \c s3 is created. \c s3 will be entered when the button
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| 72 | receives an event of type QEvent::MouseButtonPress and the state machine
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| 73 | is in state \c s2. When the button receives an event of type
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| 74 | QEvent::MouseButtonRelease and the state machine is in state \c s3, the
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| 75 | machine will transition back to state \c s2.
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| 76 |
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| 77 | \snippet examples/statemachine/eventtransitions/main.cpp 5
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| 78 |
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| 79 | Finally, the states are added to the machine as top-level states, the
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| 80 | initial state is set to be \c s1 ("Outside"), and the machine is started.
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| 81 |
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| 82 | \snippet examples/statemachine/eventtransitions/main.cpp 6
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| 83 |
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| 84 | The main() function constructs a Window object and shows it.
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| 85 |
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| 86 | */
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